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<h3>

Richard Eisenberg pushed to branch wip/derived-refactor

at <a href="https://gitlab.haskell.org/ghc/ghc">Glasgow Haskell Compiler / GHC</a>

</h3>

<h4>

Commits:

</h4>

<ul>

<li>

<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/97e58841f4216f3f090bb0f7300eab92d8c8cb93">97e58841</a></strong>

<div>

<span>by Richard Eisenberg</span>

<i>at 2020-06-18T12:26:58+01:00</i>

</div>

<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Remove unused function

</pre>

</li>

<li>

<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/1aebc93a272361aa32ebc53da6954d4322df9e4a">1aebc93a</a></strong>

<div>

<span>by Richard Eisenberg</span>

<i>at 2020-06-18T12:52:01+01:00</i>

</div>

<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Restore WRW stuff.

This reverts commit 15251d86871b4817aca0e0256e1cc4c691190676.

</pre>

</li>

<li>

<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/49bed678b1c614166e10ad06167999292473f10c">49bed678</a></strong>

<div>

<span>by Richard Eisenberg</span>

<i>at 2020-06-18T23:03:10+01:00</i>

</div>

<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Checkpoint with CtReportAs. Good so far.

</pre>

</li>

<li>

<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/e091141d11228f719a56681736d5c2d75e760407">e091141d</a></strong>

<div>

<span>by Richard Eisenberg</span>

<i>at 2020-06-18T23:23:15+01:00</i>

</div>

<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">typecheck/should_fail is passing. Hooray!

</pre>

</li>

</ul>

<h4>18 changed files:</h4>

<ul>

<li class="file-stats">

<a href="#e4b9d5e9d2de37561bfd06a2c97a5c924a1bab76">

compiler/GHC/Tc/Errors.hs

</a>

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<li class="file-stats">

<a href="#f018e77421f495c6f75733fee4a511cfe57bebe8">

compiler/GHC/Tc/Solver/Canonical.hs

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<li class="file-stats">

<a href="#81707f1fe21087531cefd70879aa09c2be5c1d22">

compiler/GHC/Tc/Solver/Flatten.hs

</a>

</li>

<li class="file-stats">

<a href="#f639b0b31b7245cb7d34ac190b798f5ec1c7da2e">

compiler/GHC/Tc/Solver/Interact.hs

</a>

</li>

<li class="file-stats">

<a href="#0c6b585a8a21f8340a85ca2cef89c4b1bf5a8953">

compiler/GHC/Tc/Solver/Monad.hs

</a>

</li>

<li class="file-stats">

<a href="#3b6d78a50c8462304f843b952a88e531718dbbd2">

compiler/GHC/Tc/Types/Constraint.hs

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<li class="file-stats">

<a href="#94c96afe1bb3b771ffbcfeeca34ce43ebbe76ccb">

compiler/GHC/Tc/Utils/TcMType.hs

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<li class="file-stats">

<a href="#d67673f1f07a2cd7b42addb9d5e4bdb29f7a7002">

testsuite/tests/typecheck/should_fail/ExpandSynsFail2.stderr

</a>

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<li class="file-stats">

<a href="#fb81f990ca209fe548e11dc52c6cf80c0bdf31a9">

testsuite/tests/typecheck/should_fail/T10619.stderr

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<li class="file-stats">

<a href="#c6b64b9d9b59838ea05917fcbc59f41616dce493">

testsuite/tests/typecheck/should_fail/T12170a.stderr

</a>

</li>

<li class="file-stats">

<a href="#4c5de4968cdc95ac52e3a556a04a81ac8c2db89b">

testsuite/tests/typecheck/should_fail/T12785b.stderr

</a>

</li>

<li class="file-stats">

<a href="#b671f2fd7dc8f6e51be0cc70855981adf90b9ad9">

testsuite/tests/typecheck/should_fail/T15801.stderr

</a>

</li>

<li class="file-stats">

<a href="#d4a71a1c4978a1928de30f417f4f35f84e105912">

testsuite/tests/typecheck/should_fail/T16204c.stderr

</a>

</li>

<li class="file-stats">

<a href="#5b2a6f64add59285ce220a54749f611abfc60a66">

testsuite/tests/typecheck/should_fail/T1899.stderr

</a>

</li>

<li class="file-stats">

<a href="#89b06e64f533ced521cddc02784368e520c59256">

testsuite/tests/typecheck/should_fail/T2714.stderr

</a>

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<li class="file-stats">

<a href="#ebbc212534a0003ce8af29cd19e5e364ef0b3250">

testsuite/tests/typecheck/should_fail/T7748a.stderr

</a>

</li>

<li class="file-stats">

<a href="#b166026a124e4ed0cfeb367ad0745c803ab612ff">

testsuite/tests/typecheck/should_fail/T8450.stderr

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<li class="file-stats">

<a href="#78345270cb5b85711bdcb2e8b36f20d5641fa1dc">

testsuite/tests/typecheck/should_fail/tcfail201.stderr

</a>

</li>

</ul>

<h4>Changes:</h4>

<li id="e4b9d5e9d2de37561bfd06a2c97a5c924a1bab76">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/609563362994f3a6704308a73779ac0d29c58557...e091141d11228f719a56681736d5c2d75e760407#e4b9d5e9d2de37561bfd06a2c97a5c924a1bab76"><strong>compiler/GHC/Tc/Errors.hs</strong></a>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="22" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="22" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -22,7 +22,7 @@ import GHC.Tc.Utils.Monad</td>

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<td class="diff-line-num old_line" data-linenumber="22" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

22

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<td class="diff-line-num new_line" data-linenumber="22" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC22" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Tc.Types.Constraint</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="23" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<td class="diff-line-num new_line" data-linenumber="23" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC23" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.Predicate</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="24" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<td class="diff-line-num new_line" data-linenumber="24" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC24" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Tc.Utils.TcMType</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="25" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<td class="diff-line-num new_line old" data-linenumber="25" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC25" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Tc.Utils.Unify</span><span class="p">(</span> <span class="n" style="color: #333;">occCheckForErrors</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">MetaTyVarUpdateResult</span><span class="p">(</span><span class="o" style="font-weight: 600;">..</span><span class="p">)</span> <span class="p">)</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="26" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="25" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC25" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Tc.Utils.Unify</span><span class="p">(</span> <span class="n" style="color: #333;">occCheckForErrors</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">MetaTyVarUpdateResult</span><span class="p">(</span><span class="o" style="font-weight: 600;">..</span><span class="p">)<span class="idiff left">,</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">swapOverTyVars</span></span> <span class="p">)</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="26" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<td class="diff-line-num new_line" data-linenumber="26" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC26" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Tc.Utils.Env</span><span class="p">(</span> <span class="n" style="color: #333;">tcInitTidyEnv</span> <span class="p">)</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="27" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<td class="diff-line-num new_line" data-linenumber="27" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC27" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Tc.Utils.TcType</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="28" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<td class="diff-line-num new_line" data-linenumber="28" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC28" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Tc.Types.Origin</span></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="34" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="34" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -34,7 +34,7 @@ import GHC.Core.TyCo.Ppr  ( pprTyVars, pprWithExplicitKindsWhen, pprSourceTyCon,</td>

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<pre style="margin: 0;"> <span id="LC34" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.Unify</span>     <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;">tcMatchTys</span> <span class="p">)</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="35" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC35" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Module</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC36" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Tc.Instance.Family</span></span>

</pre>

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37

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<td class="diff-line-num new_line old" data-linenumber="37" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC37" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.FamInstEnv</span> <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;">flattenTys</span><span class="p"><span class="idiff left">,</span></span><span class="idiff"> </span><span class="nf" style="color: #900; font-weight: 600;"><span class="idiff">normaliseType</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="nf" style="color: #900; font-weight: 600;"><span class="idiff right">topNormaliseType_maybe</span></span> <span class="p">)</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="38" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="37" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC37" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.FamInstEnv</span> <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;">flattenTys</span> <span class="p">)</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="38" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

38

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<td class="diff-line-num new_line" data-linenumber="38" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

38

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<pre style="margin: 0;"> <span id="LC38" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Tc.Utils.Instantiate</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="39" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

39

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<td class="diff-line-num new_line" data-linenumber="39" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

39

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<pre style="margin: 0;"> <span id="LC39" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.InstEnv</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="40" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<td class="diff-line-num new_line" data-linenumber="40" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC40" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.TyCon</span></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="42" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="42" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -42,9 +42,6 @@ import GHC.Core.Class</td>

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<pre style="margin: 0;"> <span id="LC42" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.DataCon</span></span>

</pre>

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43

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<pre style="margin: 0;"> <span id="LC43" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Tc.Types.Evidence</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="44" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<td class="diff-line-num new_line" data-linenumber="44" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC44" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Tc.Types.EvTerm</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="45" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC45" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Tc.Solver.Monad</span>     <span class="p">(</span> <span class="kt" style="color: #458; font-weight: 600;">TcS</span> <span class="p">)</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="46" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<td class="diff-line-num new_line old" data-linenumber="45" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC46" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Tc.Solver.Flatten</span>   <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;">flattenType</span> <span class="p">)</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="47" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<td class="diff-line-num new_line old" data-linenumber="45" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC47" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Tc.Solver.Interact</span>  <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;">withGivens</span> <span class="p">)</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="48" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<td class="diff-line-num new_line" data-linenumber="45" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

45

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<pre style="margin: 0;"> <span id="LC45" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Hs.Binds</span> <span class="p">(</span> <span class="kt" style="color: #458; font-weight: 600;">PatSynBind</span><span class="p">(</span><span class="o" style="font-weight: 600;">..</span><span class="p">)</span> <span class="p">)</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="49" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

49

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<td class="diff-line-num new_line" data-linenumber="46" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

46

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<pre style="margin: 0;"> <span id="LC46" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Name</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="50" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<td class="diff-line-num new_line" data-linenumber="47" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC47" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Name.Reader</span> <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;">lookupGRE_Name</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">GlobalRdrEnv</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">mkRdrUnqual</span> <span class="p">)</span></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="569" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="566" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -569,20 +566,28 @@ mkErrorItem ct = EI { ei_pred    = tyvar_first pred</td>

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<td class="diff-line-num new_line" data-linenumber="566" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

566

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<pre style="margin: 0;"> <span id="LC566" class="line" lang="haskell">      <span class="o" style="font-weight: 600;">=</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Nothing</span><span class="p">,</span> <span class="n" style="color: #333;">ctPred</span> <span class="n" style="color: #333;">ct</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="570" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<td class="diff-line-num new_line" data-linenumber="567" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

567

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<pre style="margin: 0;"> <span id="LC567" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="571" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC568" class="line" lang="haskell">      <span class="c1" style="color: #998; font-style: italic;">-- We reorient any tyvar equalities to put the tyvar first; this</span></span>

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<pre style="margin: 0;">-<span id="LC572" class="line" lang="haskell">      <span class="c1" style="color: #998; font-style: italic;">-- allows fewer cases when choosing how to treat errors</span></span>

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<pre style="margin: 0;">+<span id="LC569" class="line" lang="haskell">      <span class="c1" style="color: #998; font-style: italic;">-- allows fewer cases when choosing how to treat errors. Forgetting</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC570" class="line" lang="haskell">      <span class="c1" style="color: #998; font-style: italic;">-- to do this causes mischaracterization of errors.</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC571" class="line" lang="haskell">    <span class="n" style="color: #333;">tyvar_first</span> <span class="n" style="color: #333;">pred</span></span>

</pre>

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574

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<pre style="margin: 0;"> <span id="LC572" class="line" lang="haskell">      <span class="o" style="font-weight: 600;">|</span> <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="p">(</span><span class="n" style="color: #333;">r</span><span class="p">,</span> <span class="n" style="color: #333;">ty1</span><span class="p">,</span> <span class="n" style="color: #333;">ty2</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">getEqPredTys_maybe</span> <span class="n" style="color: #333;">pred</span></span>

</pre>

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575

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<pre style="margin: 0;"> <span id="LC573" class="line" lang="haskell">      <span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="p">(</span><span class="n" style="color: #333;">tv2</span><span class="p">,</span> <span class="n" style="color: #333;">co2</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">getCastedTyVar_maybe</span> <span class="n" style="color: #333;">ty2</span></span>

</pre>

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<pre style="margin: 0;">-<span id="LC576" class="line" lang="haskell">      <span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">getCastedTyVar_maybe</span> <span class="n" style="color: #333;">ty1</span>  <span class="c1" style="color: #998; font-style: italic;">-- no need to swap unnecessarily</span></span>

</pre>

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577

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<pre style="margin: 0;">-<span id="LC577" class="line" lang="haskell">      <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mkPrimEqPredRole</span> <span class="n" style="color: #333;">r</span> <span class="p">(</span><span class="n" style="color: #333;">mkTyVarTy</span> <span class="n" style="color: #333;">tv2</span><span class="p">)</span> <span class="p">(</span><span class="n" style="color: #333;">ty1</span> <span class="p">`</span><span class="n" style="color: #333;">mkCastTy</span><span class="p">`</span> <span class="n" style="color: #333;">mkSymCo</span> <span class="n" style="color: #333;">co2</span><span class="p">)</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC574" class="line" lang="haskell">      <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">swapped_pred</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mkPrimEqPredRole</span> <span class="n" style="color: #333;">r</span> <span class="p">(</span><span class="n" style="color: #333;">mkTyVarTy</span> <span class="n" style="color: #333;">tv2</span><span class="p">)</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC575" class="line" lang="haskell">                                              <span class="p">(</span><span class="n" style="color: #333;">ty1</span> <span class="p">`</span><span class="n" style="color: #333;">mkCastTy</span><span class="p">`</span> <span class="n" style="color: #333;">mkSymCo</span> <span class="n" style="color: #333;">co2</span><span class="p">)</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC576" class="line" lang="haskell">        <span class="kr" style="font-weight: 600;">in</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC577" class="line" lang="haskell">        <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">getCastedTyVar_maybe</span> <span class="n" style="color: #333;">ty1</span> <span class="kr" style="font-weight: 600;">of</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC578" class="line" lang="haskell">            <span class="c1" style="color: #998; font-style: italic;">-- tyvar originally on right; non-tyvar originally on left: swap</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC579" class="line" lang="haskell">          <span class="kt" style="color: #458; font-weight: 600;">Nothing</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">swapped_pred</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC580" class="line" lang="haskell">          <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="p">(</span><span class="n" style="color: #333;">tv1</span><span class="p">,</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="581" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

581

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<pre style="margin: 0;">+<span id="LC581" class="line" lang="haskell">            <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">swapOverTyVars</span> <span class="n" style="color: #333;">tv1</span> <span class="n" style="color: #333;">tv2</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">swapped_pred</span></span>

</pre>

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582

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<pre style="margin: 0;">+<span id="LC582" class="line" lang="haskell">            <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">otherwise</span>              <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">pred</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="578" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

578

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583

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<pre style="margin: 0;"> <span id="LC583" class="line" lang="haskell">      <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">otherwise</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="579" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

579

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<td class="diff-line-num new_line" data-linenumber="584" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

584

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<pre style="margin: 0;"> <span id="LC584" class="line" lang="haskell">      <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">pred</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="580" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

580

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<td class="diff-line-num new_line" data-linenumber="585" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

585

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<pre style="margin: 0;"> <span id="LC585" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="581" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

581

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<td class="diff-line-num new_line old" data-linenumber="586" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC581" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="582" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="586" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

586

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<pre style="margin: 0;">+<span id="LC586" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">{- "RAE"</span></span>

</pre>

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582

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<td class="diff-line-num new_line" data-linenumber="587" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

587

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<pre style="margin: 0;"> <span id="LC587" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">tidyErrorItem :: TidyEnv -> ErrorItem -> ErrorItem</span></span>

</pre>

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583

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588

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<pre style="margin: 0;"> <span id="LC588" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">tidyErrorItem env item@(EI { ei_pred = pred })</span></span>

</pre>

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584

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589

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<pre style="margin: 0;"> <span id="LC589" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">  = item { ei_pred = tidyType env pred }</span></span>

</pre>

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585

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<pre style="margin: 0;">-<span id="LC585" class="line" lang="haskell"></span>

</pre>

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590

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<pre style="margin: 0;">+<span id="LC590" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">-}</span></span>

</pre>

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586

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591

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<pre style="margin: 0;"> <span id="LC591" class="line" lang="haskell"><span class="n" style="color: #333;">errorItemOrigin</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">ErrorItem</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">CtOrigin</span></span>

</pre>

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587

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592

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<pre style="margin: 0;"> <span id="LC592" class="line" lang="haskell"><span class="n" style="color: #333;">errorItemOrigin</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ctLocOrigin</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">ei_loc</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC593" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="595" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="600" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -595,8 +600,9 @@ reportWanteds ctxt tc_lvl (WC { wc_simple = simples, wc_impl = implics</td>

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<pre style="margin: 0;"> <span id="LC600" class="line" lang="haskell">                              <span class="p">,</span> <span class="n" style="color: #333;">wc_holes</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">holes</span> <span class="p">})</span></span>

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<pre style="margin: 0;"> <span id="LC601" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">traceTc</span> <span class="s" style="color: #d14;">"reportWanteds 1"</span> <span class="p">(</span><span class="n" style="color: #333;">vcat</span> <span class="p">[</span> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"Simples ="</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">simples</span></span>

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<pre style="margin: 0;"> <span id="LC602" class="line" lang="haskell">                                         <span class="p">,</span> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"Suppress ="</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">ppr</span> <span class="p">(</span><span class="n" style="color: #333;">cec_suppress</span> <span class="n" style="color: #333;">ctxt</span><span class="p">)</span></span>

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<pre style="margin: 0;">-<span id="LC598" class="line" lang="haskell">                                         <span class="p">,</span> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"wc_holes = "</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">holes</span> <span class="p">])</span></span>

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<pre style="margin: 0;">-<span id="LC599" class="line" lang="haskell"></span>

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<td class="diff-line-num new new_line" data-linenumber="603" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC603" class="line" lang="haskell">                                         <span class="p">,</span> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"tidy_items ="</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">tidy_items</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="604" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

604

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<pre style="margin: 0;">+<span id="LC604" class="line" lang="haskell">                                         <span class="p">,</span> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"tidy_holes ="</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">tidy_holes</span> <span class="p">])</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="605" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

605

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<pre style="margin: 0;">+<span id="LC605" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">{- "RAE"</span></span>

</pre>

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600

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<td class="diff-line-num new_line" data-linenumber="606" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

606

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<pre style="margin: 0;"> <span id="LC606" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">         -- rewrite all the errors with respect to the givens</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="601" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

601

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<td class="diff-line-num new_line" data-linenumber="607" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC607" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">       ; let givens  = errCtxtGivens ctxt</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="602" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

602

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<td class="diff-line-num new_line" data-linenumber="608" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

608

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<pre style="margin: 0;"> <span id="LC608" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">             raw_items = map mkErrorItem (bagToList simples)</span></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="613" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="619" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -613,7 +619,7 @@ reportWanteds ctxt tc_lvl (WC { wc_simple = simples, wc_impl = implics</td>

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<pre style="margin: 0;"> <span id="LC619" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">             tidy_holes = map (tidyHole env)      rewritten_holes</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="614" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

614

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<td class="diff-line-num new_line" data-linenumber="620" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

620

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<pre style="margin: 0;"> <span id="LC620" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">       ; traceTc "reportWanteds 2" (vcat [ text "tidy_items =" <+> ppr tidy_items</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="615" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

615

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<td class="diff-line-num new_line" data-linenumber="621" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

621

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<pre style="margin: 0;"> <span id="LC621" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">                                         , text "tidy_holes =" <+> ppr tidy_holes ])</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="616" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<td class="diff-line-num new_line old" data-linenumber="622" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC616" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="617" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="622" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC622" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">-}</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="617" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<td class="diff-line-num new_line" data-linenumber="623" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC623" class="line" lang="haskell">         <span class="c1" style="color: #998; font-style: italic;">-- First, deal with any out-of-scope errors:</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="618" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

618

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<td class="diff-line-num new_line" data-linenumber="624" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC624" class="line" lang="haskell">       <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="p">(</span><span class="n" style="color: #333;">out_of_scope</span><span class="p">,</span> <span class="n" style="color: #333;">other_holes</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">partition</span> <span class="n" style="color: #333;">isOutOfScopeHole</span> <span class="n" style="color: #333;">tidy_holes</span></span>

</pre>

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619

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<td class="diff-line-num new_line" data-linenumber="625" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

625

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<pre style="margin: 0;"> <span id="LC625" class="line" lang="haskell">               <span class="c1" style="color: #998; font-style: italic;">-- don't suppress out-of-scope errors</span></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="649" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="655" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -649,7 +655,9 @@ reportWanteds ctxt tc_lvl (WC { wc_simple = simples, wc_impl = implics</td>

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649

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<td class="diff-line-num new_line" data-linenumber="655" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

655

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<pre style="margin: 0;"> <span id="LC655" class="line" lang="haskell">            <span class="c1" style="color: #998; font-style: italic;">-- wanted insoluble here; but do suppress inner insolubles</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="650" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

650

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<td class="diff-line-num new_line" data-linenumber="656" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

656

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<pre style="margin: 0;"> <span id="LC656" class="line" lang="haskell">            <span class="c1" style="color: #998; font-style: italic;">-- if there's a *given* insoluble here (= inaccessible code)</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="651" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

651

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<td class="diff-line-num new_line" data-linenumber="657" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

657

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<pre style="margin: 0;"> <span id="LC657" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>

</pre>

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652

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<pre style="margin: 0;">-<span id="LC652" class="line" lang="haskell">    <span class="n" style="color: #333;">env</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">cec_tidy</span> <span class="n" style="color: #333;">ctxt</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="653" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="658" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

658

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<pre style="margin: 0;">+<span id="LC658" class="line" lang="haskell">    <span class="n" style="color: #333;">env</span>        <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">cec_tidy</span> <span class="n" style="color: #333;">ctxt</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="653" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="659" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

659

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<pre style="margin: 0;">+<span id="LC659" class="line" lang="haskell">    <span class="n" style="color: #333;">tidy_items</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">bagToList</span> <span class="p">(</span><span class="n" style="color: #333;">mapBag</span> <span class="p">(</span><span class="n" style="color: #333;">mkErrorItem</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">tidyCt</span> <span class="n" style="color: #333;">env</span><span class="p">)</span>   <span class="n" style="color: #333;">simples</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="653" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="660" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

660

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<pre style="margin: 0;">+<span id="LC660" class="line" lang="haskell">    <span class="n" style="color: #333;">tidy_holes</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">bagToList</span> <span class="p">(</span><span class="n" style="color: #333;">mapBag</span> <span class="p">(</span><span class="n" style="color: #333;">tidyHole</span> <span class="n" style="color: #333;">env</span><span class="p">)</span> <span class="n" style="color: #333;">holes</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="653" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

653

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<td class="diff-line-num new_line" data-linenumber="661" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

661

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<pre style="margin: 0;"> <span id="LC661" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="654" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

654

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<td class="diff-line-num new_line" data-linenumber="662" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

662

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<pre style="margin: 0;"> <span id="LC662" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">-- report1: ones that should *not* be suppressed by</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="655" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

655

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<td class="diff-line-num new_line" data-linenumber="663" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

663

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<pre style="margin: 0;"> <span id="LC663" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">--          an insoluble somewhere else in the tree</span></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="3129" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="3137" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -3129,7 +3137,7 @@ are created by in GHC.Runtime.Heap.Inspect.zonkRTTIType.</td>

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3129

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<td class="diff-line-num new_line" data-linenumber="3137" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

3137

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<pre style="margin: 0;"> <span id="LC3137" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">See Note [Wanteds rewrite Wanteds] in GHC.Tc.Types.Constraint for the</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="3130" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

3130

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<td class="diff-line-num new_line" data-linenumber="3138" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

3138

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<pre style="margin: 0;"> <span id="LC3138" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">motivation why we need these.</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="3131" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

3131

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<td class="diff-line-num new_line" data-linenumber="3139" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

3139

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<pre style="margin: 0;"> <span id="LC3139" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">-}</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="3132" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

3132

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<td class="diff-line-num new_line old" data-linenumber="3140" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC3132" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="3133" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="3140" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

3140

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<pre style="margin: 0;">+<span id="LC3140" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">{- "RAE"</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="3133" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

3133

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<td class="diff-line-num new_line" data-linenumber="3141" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

3141

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<pre style="margin: 0;"> <span id="LC3141" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">-- | Extract out all the givens from enclosing implications; order of</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="3134" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

3134

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<td class="diff-line-num new_line" data-linenumber="3142" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

3142

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<pre style="margin: 0;"> <span id="LC3142" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">-- result does not matter.</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="3135" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

3135

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<td class="diff-line-num new_line" data-linenumber="3143" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

3143

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<pre style="margin: 0;"> <span id="LC3143" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">errCtxtGivens :: ReportErrCtxt -> [Ct]</span></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="3161" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="3169" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -3161,3 +3169,5 @@ simplifyHole :: Hole -> TcS Hole</td>

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<td class="diff-line-num old_line" data-linenumber="3161" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

3161

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<td class="diff-line-num new_line" data-linenumber="3169" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

3169

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<pre style="margin: 0;"> <span id="LC3169" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">simplifyHole h@(Hole { hole_ty = ty, hole_loc = loc })</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="3162" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

3162

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<td class="diff-line-num new_line" data-linenumber="3170" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

3170

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<pre style="margin: 0;"> <span id="LC3170" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">  = do { ty' <- flattenType loc ty</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="3163" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

3163

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<td class="diff-line-num new_line" data-linenumber="3171" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

3171

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<pre style="margin: 0;"> <span id="LC3171" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">       ; return (h { hole_ty = ty' }) }</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC3172" class="line" lang="haskell"></span>

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<pre style="margin: 0;">+<span id="LC3173" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">-}</span></span></pre>

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<br>

</li>

<li id="f018e77421f495c6f75733fee4a511cfe57bebe8">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/609563362994f3a6704308a73779ac0d29c58557...e091141d11228f719a56681736d5c2d75e760407#f018e77421f495c6f75733fee4a511cfe57bebe8"><strong>compiler/GHC/Tc/Solver/Canonical.hs</strong></a>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="49" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="49" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -49,6 +49,7 @@ import Data.Maybe ( isJust )</td>

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<pre style="margin: 0;"> <span id="LC49" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Data.List</span>  <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;">zip4</span> <span class="p">)</span></span>

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50

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<pre style="margin: 0;"> <span id="LC50" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Basic</span></span>

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<pre style="margin: 0;"> <span id="LC51" class="line" lang="haskell"></span>

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<pre style="margin: 0;">+<span id="LC52" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="k" style="font-weight: 600;">qualified</span> <span class="nn" style="color: #555;">Data.Semigroup</span> <span class="k" style="font-weight: 600;">as</span> <span class="n" style="color: #333;">S</span></span>

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<pre style="margin: 0;"> <span id="LC53" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Data.Bifunctor</span> <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;">bimap</span> <span class="p">)</span></span>

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<pre style="margin: 0;"> <span id="LC54" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Data.Foldable</span> <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;">traverse_</span> <span class="p">)</span></span>

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<pre style="margin: 0;"> <span id="LC55" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="204" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="205" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -204,7 +205,7 @@ canClass :: CtEvidence</td>

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<pre style="margin: 0;"> <span id="LC205" class="line" lang="haskell"><span class="n" style="color: #333;">canClass</span> <span class="n" style="color: #333;">ev</span> <span class="n" style="color: #333;">cls</span> <span class="n" style="color: #333;">tys</span> <span class="n" style="color: #333;">pend_sc</span></span>

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<pre style="margin: 0;"> <span id="LC206" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span>   <span class="c1" style="color: #998; font-style: italic;">-- all classes do *nominal* matching</span></span>

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<pre style="margin: 0;"> <span id="LC207" class="line" lang="haskell">    <span class="kt" style="color: #458; font-weight: 600;">ASSERT2</span><span class="p">(</span> <span class="n" style="color: #333;">ctEvRole</span> <span class="n" style="color: #333;">ev</span> <span class="o" style="font-weight: 600;">==</span> <span class="kt" style="color: #458; font-weight: 600;">Nominal</span><span class="p">,</span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">ev</span> <span class="o" style="font-weight: 600;">$$</span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">cls</span> <span class="o" style="font-weight: 600;">$$</span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">tys</span> <span class="p">)</span></span>

</pre>

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<td class="diff-line-num new_line old" data-linenumber="208" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC207" class="line" lang="haskell">    <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">xis</span><span class="p">,</span> <span class="n" style="color: #333;">cos</span><span class="p">,</span> <span class="n" style="color: #333;">_kind_co</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">flattenArgsNom</span> <span class="n" style="color: #333;">ev</span> <span class="n" style="color: #333;">cls_tc</span> <span class="n" style="color: #333;">tys</span></span>

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<td class="diff-line-num new new_line" data-linenumber="208" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC208" class="line" lang="haskell">    <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">xis</span><span class="p">,</span> <span class="n" style="color: #333;">cos</span><span class="p">,</span> <span class="n" style="color: #333;">_kind_co</span><span class="p"><span class="idiff left">,</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">wrw</span></span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">flattenArgsNom</span> <span class="n" style="color: #333;">ev</span> <span class="n" style="color: #333;">cls_tc</span> <span class="n" style="color: #333;">tys</span></span>

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<pre style="margin: 0;"> <span id="LC209" class="line" lang="haskell">       <span class="p">;</span> <span class="kt" style="color: #458; font-weight: 600;">MASSERT</span><span class="p">(</span> <span class="n" style="color: #333;">isTcReflCo</span> <span class="n" style="color: #333;">_kind_co</span> <span class="p">)</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC210" class="line" lang="haskell">       <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">co</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mkTcTyConAppCo</span> <span class="kt" style="color: #458; font-weight: 600;">Nominal</span> <span class="n" style="color: #333;">cls_tc</span> <span class="n" style="color: #333;">cos</span></span>

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<pre style="margin: 0;"> <span id="LC211" class="line" lang="haskell">             <span class="n" style="color: #333;">xi</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mkClassPred</span> <span class="n" style="color: #333;">cls</span> <span class="n" style="color: #333;">xis</span></span>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="212" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="213" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -212,7 +213,7 @@ canClass ev cls tys pend_sc</td>

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<pre style="margin: 0;"> <span id="LC213" class="line" lang="haskell">                                     <span class="p">,</span> <span class="n" style="color: #333;">cc_tyargs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">xis</span></span>

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<pre style="margin: 0;"> <span id="LC214" class="line" lang="haskell">                                     <span class="p">,</span> <span class="n" style="color: #333;">cc_class</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">cls</span></span>

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<pre style="margin: 0;"> <span id="LC215" class="line" lang="haskell">                                     <span class="p">,</span> <span class="n" style="color: #333;">cc_pend_sc</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">pend_sc</span> <span class="p">}</span></span>

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<pre style="margin: 0;">-<span id="LC215" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">mb</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rewriteEvidence</span> <span class="n" style="color: #333;">ev</span> <span class="n" style="color: #333;">xi</span> <span class="n" style="color: #333;">co</span></span>

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<pre style="margin: 0;">+<span id="LC216" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">mb</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rewriteEvidence</span> <span class="n" style="color: #333;"><span class="idiff left">wrw</span></span><span class="idiff right"> </span><span class="n" style="color: #333;">ev</span> <span class="n" style="color: #333;">xi</span> <span class="n" style="color: #333;">co</span></span>

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<pre style="margin: 0;"> <span id="LC217" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">traceTcS</span> <span class="s" style="color: #d14;">"canClass"</span> <span class="p">(</span><span class="n" style="color: #333;">vcat</span> <span class="p">[</span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">ev</span></span>

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<pre style="margin: 0;"> <span id="LC218" class="line" lang="haskell">                                   <span class="p">,</span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">xi</span><span class="p">,</span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">mb</span> <span class="p">])</span></span>

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<pre style="margin: 0;"> <span id="LC219" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">fmap</span> <span class="n" style="color: #333;">mk_ct</span> <span class="n" style="color: #333;">mb</span><span class="p">)</span> <span class="p">}</span></span>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="704" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="705" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -704,8 +705,8 @@ canIrred :: CtIrredStatus -> CtEvidence -> TcS (StopOrContinue Ct)</td>

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<pre style="margin: 0;"> <span id="LC705" class="line" lang="haskell"><span class="n" style="color: #333;">canIrred</span> <span class="n" style="color: #333;">status</span> <span class="n" style="color: #333;">ev</span></span>

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<pre style="margin: 0;"> <span id="LC706" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">pred</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ctEvPred</span> <span class="n" style="color: #333;">ev</span></span>

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<pre style="margin: 0;"> <span id="LC707" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">traceTcS</span> <span class="s" style="color: #d14;">"can_pred"</span> <span class="p">(</span><span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"IrredPred = "</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">pred</span><span class="p">)</span></span>

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<pre style="margin: 0;">-<span id="LC707" class="line" lang="haskell">       <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">xi</span><span class="p">,</span><span class="n" style="color: #333;">co</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">flatten</span> <span class="kt" style="color: #458; font-weight: 600;">FM_FlattenAll</span> <span class="n" style="color: #333;">ev</span> <span class="n" style="color: #333;">pred</span> <span class="c1" style="color: #998; font-style: italic;">-- co :: xi ~ pred</span></span>

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<pre style="margin: 0;">-<span id="LC708" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">rewriteEvidence</span> <span class="n" style="color: #333;">ev</span> <span class="n" style="color: #333;">xi</span> <span class="n" style="color: #333;">co</span> <span class="p">`</span><span class="n" style="color: #333;">andWhenContinue</span><span class="p">`</span> <span class="nf" style="color: #900; font-weight: 600;">\</span> <span class="n" style="color: #333;">new_ev</span> <span class="o" style="font-weight: 600;">-></span></span>

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<pre style="margin: 0;">+<span id="LC708" class="line" lang="haskell">       <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">xi</span><span class="p">,</span><span class="n" style="color: #333;">co</span><span class="p"><span class="idiff left">,</span></span><span class="n" style="color: #333;"><span class="idiff right">wrw</span></span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">flatten</span> <span class="kt" style="color: #458; font-weight: 600;">FM_FlattenAll</span> <span class="n" style="color: #333;">ev</span> <span class="n" style="color: #333;">pred</span> <span class="c1" style="color: #998; font-style: italic;">-- co :: xi ~ pred</span></span>

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<pre style="margin: 0;">+<span id="LC709" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">rewriteEvidence</span> <span class="n" style="color: #333;"><span class="idiff left">wrw</span></span><span class="idiff right"> </span><span class="n" style="color: #333;">ev</span> <span class="n" style="color: #333;">xi</span> <span class="n" style="color: #333;">co</span> <span class="p">`</span><span class="n" style="color: #333;">andWhenContinue</span><span class="p">`</span> <span class="nf" style="color: #900; font-weight: 600;">\</span> <span class="n" style="color: #333;">new_ev</span> <span class="o" style="font-weight: 600;">-></span></span>

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<pre style="margin: 0;"> <span id="LC710" class="line" lang="haskell">    <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="c1" style="color: #998; font-style: italic;">-- Re-classify, in case flattening has improved its shape</span></span>

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<pre style="margin: 0;"> <span id="LC711" class="line" lang="haskell">       <span class="p">;</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">classifyPredType</span> <span class="p">(</span><span class="n" style="color: #333;">ctEvPred</span> <span class="n" style="color: #333;">new_ev</span><span class="p">)</span> <span class="kr" style="font-weight: 600;">of</span></span>

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<pre style="margin: 0;"> <span id="LC712" class="line" lang="haskell">           <span class="kt" style="color: #458; font-weight: 600;">ClassPred</span> <span class="n" style="color: #333;">cls</span> <span class="n" style="color: #333;">tys</span>     <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">canClassNC</span> <span class="n" style="color: #333;">new_ev</span> <span class="n" style="color: #333;">cls</span> <span class="n" style="color: #333;">tys</span></span>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="814" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -814,8 +815,8 @@ canForAll ev pend_sc</td>

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<pre style="margin: 0;"> <span id="LC815" class="line" lang="haskell">         <span class="c1" style="color: #998; font-style: italic;">-- do them under a forall anyway (c.f. Flatten.flatten_one</span></span>

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<pre style="margin: 0;"> <span id="LC816" class="line" lang="haskell">         <span class="c1" style="color: #998; font-style: italic;">-- on a forall type)</span></span>

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<pre style="margin: 0;"> <span id="LC817" class="line" lang="haskell">         <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">pred</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ctEvPred</span> <span class="n" style="color: #333;">ev</span></span>

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<td class="diff-line-num new_line old" data-linenumber="818" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC817" class="line" lang="haskell">       <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">xi</span><span class="p">,</span><span class="n" style="color: #333;">co</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">flatten</span> <span class="kt" style="color: #458; font-weight: 600;">FM_SubstOnly</span> <span class="n" style="color: #333;">ev</span> <span class="n" style="color: #333;">pred</span> <span class="c1" style="color: #998; font-style: italic;">-- co :: xi ~ pred</span></span>

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<pre style="margin: 0;">-<span id="LC818" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">rewriteEvidence</span> <span class="n" style="color: #333;">ev</span> <span class="n" style="color: #333;">xi</span> <span class="n" style="color: #333;">co</span> <span class="p">`</span><span class="n" style="color: #333;">andWhenContinue</span><span class="p">`</span> <span class="nf" style="color: #900; font-weight: 600;">\</span> <span class="n" style="color: #333;">new_ev</span> <span class="o" style="font-weight: 600;">-></span></span>

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<pre style="margin: 0;">+<span id="LC818" class="line" lang="haskell">       <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">xi</span><span class="p">,</span><span class="n" style="color: #333;">co</span><span class="p"><span class="idiff left">,</span></span><span class="n" style="color: #333;"><span class="idiff right">wrw</span></span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">flatten</span> <span class="kt" style="color: #458; font-weight: 600;">FM_SubstOnly</span> <span class="n" style="color: #333;">ev</span> <span class="n" style="color: #333;">pred</span> <span class="c1" style="color: #998; font-style: italic;">-- co :: xi ~ pred</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="819" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

819

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<pre style="margin: 0;">+<span id="LC819" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">rewriteEvidence</span> <span class="n" style="color: #333;"><span class="idiff left">wrw</span></span><span class="idiff right"> </span><span class="n" style="color: #333;">ev</span> <span class="n" style="color: #333;">xi</span> <span class="n" style="color: #333;">co</span> <span class="p">`</span><span class="n" style="color: #333;">andWhenContinue</span><span class="p">`</span> <span class="nf" style="color: #900; font-weight: 600;">\</span> <span class="n" style="color: #333;">new_ev</span> <span class="o" style="font-weight: 600;">-></span></span>

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<td class="diff-line-num new_line" data-linenumber="820" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

820

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<pre style="margin: 0;"> <span id="LC820" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;"> <span id="LC821" class="line" lang="haskell">    <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="c1" style="color: #998; font-style: italic;">-- Now decompose into its pieces and solve it</span></span>

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822

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<pre style="margin: 0;"> <span id="LC822" class="line" lang="haskell">         <span class="c1" style="color: #998; font-style: italic;">-- (It takes a lot less code to flatten before decomposing.)</span></span>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="1029" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="1030" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1029,9 +1030,9 @@ can_eq_nc' True _rdr_env _envs ev eq_rel ty1 _ (AppTy t2 s2) _</td>

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1029

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1030

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<pre style="margin: 0;"> <span id="LC1030" class="line" lang="haskell"></span>

</pre>

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1030

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<td class="diff-line-num new_line" data-linenumber="1031" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1031

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<pre style="margin: 0;"> <span id="LC1031" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- No similarity in type structure detected. Flatten and try again.</span></span>

</pre>

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1031

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<td class="diff-line-num new_line" data-linenumber="1032" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1032

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<pre style="margin: 0;"> <span id="LC1032" class="line" lang="haskell"><span class="n" style="color: #333;">can_eq_nc'</span> <span class="kt" style="color: #458; font-weight: 600;">False</span> <span class="n" style="color: #333;">rdr_env</span> <span class="n" style="color: #333;">envs</span> <span class="n" style="color: #333;">ev</span> <span class="n" style="color: #333;">eq_rel</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">ps_ty1</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">ps_ty2</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="1032" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

1032

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<td class="diff-line-num new_line old" data-linenumber="1033" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC1032" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">xi1</span><span class="p">,</span> <span class="n" style="color: #333;">co1</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">flatten</span> <span class="kt" style="color: #458; font-weight: 600;">FM_FlattenAll</span> <span class="n" style="color: #333;">ev</span> <span class="n" style="color: #333;">ps_ty1</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="1033" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

1033

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<td class="diff-line-num new_line old" data-linenumber="1033" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC1033" class="line" lang="haskell">       <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">xi2</span><span class="p">,</span> <span class="n" style="color: #333;">co2</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">flatten</span> <span class="kt" style="color: #458; font-weight: 600;">FM_FlattenAll</span> <span class="n" style="color: #333;">ev</span> <span class="n" style="color: #333;">ps_ty2</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="1034" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

1034

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<td class="diff-line-num new_line old" data-linenumber="1033" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC1034" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">new_ev</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rewriteEqEvidence</span> <span class="n" style="color: #333;">ev</span> <span class="kt" style="color: #458; font-weight: 600;">NotSwapped</span> <span class="n" style="color: #333;">xi1</span> <span class="n" style="color: #333;">xi2</span> <span class="n" style="color: #333;">co1</span> <span class="n" style="color: #333;">co2</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="1035" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="1033" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1033

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<pre style="margin: 0;">+<span id="LC1033" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">xi1</span><span class="p">,</span> <span class="n" style="color: #333;">co1</span><span class="p"><span class="idiff left">,</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">wrw1</span></span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">flatten</span> <span class="kt" style="color: #458; font-weight: 600;">FM_FlattenAll</span> <span class="n" style="color: #333;">ev</span> <span class="n" style="color: #333;">ps_ty1</span></span>

</pre>

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1034

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<pre style="margin: 0;">+<span id="LC1034" class="line" lang="haskell">       <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">xi2</span><span class="p">,</span> <span class="n" style="color: #333;">co2</span><span class="p"><span class="idiff left">,</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">wrw2</span></span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">flatten</span> <span class="kt" style="color: #458; font-weight: 600;">FM_FlattenAll</span> <span class="n" style="color: #333;">ev</span> <span class="n" style="color: #333;">ps_ty2</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="1035" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1035

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<pre style="margin: 0;">+<span id="LC1035" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">new_ev</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rewriteEqEvidence</span> <span class="p"><span class="idiff left">(</span></span><span class="n" style="color: #333;"><span class="idiff">wrw1</span></span><span class="idiff"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">S</span></span><span class="o" style="font-weight: 600;"><span class="idiff">.<></span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">wrw2</span></span><span class="p"><span class="idiff">)</span></span><span class="idiff right"> </span><span class="n" style="color: #333;">ev</span> <span class="kt" style="color: #458; font-weight: 600;">NotSwapped</span> <span class="n" style="color: #333;">xi1</span> <span class="n" style="color: #333;">xi2</span> <span class="n" style="color: #333;">co1</span> <span class="n" style="color: #333;">co2</span></span>

</pre>

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1035

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<td class="diff-line-num new_line" data-linenumber="1036" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1036

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<pre style="margin: 0;"> <span id="LC1036" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">can_eq_nc'</span> <span class="kt" style="color: #458; font-weight: 600;">True</span> <span class="n" style="color: #333;">rdr_env</span> <span class="n" style="color: #333;">envs</span> <span class="n" style="color: #333;">new_ev</span> <span class="n" style="color: #333;">eq_rel</span> <span class="n" style="color: #333;">xi1</span> <span class="n" style="color: #333;">xi1</span> <span class="n" style="color: #333;">xi2</span> <span class="n" style="color: #333;">xi2</span> <span class="p">}</span></span>

</pre>

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1036

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<td class="diff-line-num new_line" data-linenumber="1037" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1037

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<pre style="margin: 0;"> <span id="LC1037" class="line" lang="haskell"></span>

</pre>

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1037

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<td class="diff-line-num new_line" data-linenumber="1038" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1038

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<pre style="margin: 0;"> <span id="LC1038" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- We've flattened and the types don't match. Give up.</span></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="1363" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="1364" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1363,7 +1364,7 @@ can_eq_newtype_nc ev swapped ty1 ((gres, co), ty1') ty2 ps_ty2</td>

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1363

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1364

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<pre style="margin: 0;"> <span id="LC1364" class="line" lang="haskell">         <span class="c1" style="color: #998; font-style: italic;">-- module, don't warn about it being unused.</span></span>

</pre>

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1364

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1365

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<pre style="margin: 0;"> <span id="LC1365" class="line" lang="haskell">         <span class="c1" style="color: #998; font-style: italic;">-- See Note [Tracking unused binding and imports] in GHC.Tc.Utils.</span></span>

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<pre style="margin: 0;"> <span id="LC1366" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num new_line old" data-linenumber="1367" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC1366" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">new_ev</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rewriteEqEvidence</span> <span class="n" style="color: #333;">ev</span> <span class="n" style="color: #333;">swapped</span> <span class="n" style="color: #333;">ty1'</span> <span class="n" style="color: #333;">ps_ty2</span></span>

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<pre style="margin: 0;">+<span id="LC1367" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">new_ev</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rewriteEqEvidence</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left">NoWRW</span></span><span class="idiff right"> </span><span class="n" style="color: #333;">ev</span> <span class="n" style="color: #333;">swapped</span> <span class="n" style="color: #333;">ty1'</span> <span class="n" style="color: #333;">ps_ty2</span></span>

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<pre style="margin: 0;"> <span id="LC1368" class="line" lang="haskell">                                     <span class="p">(</span><span class="n" style="color: #333;">mkTcSymCo</span> <span class="n" style="color: #333;">co</span><span class="p">)</span> <span class="p">(</span><span class="n" style="color: #333;">mkTcReflCo</span> <span class="kt" style="color: #458; font-weight: 600;">Representational</span> <span class="n" style="color: #333;">ps_ty2</span><span class="p">)</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC1369" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">can_eq_nc</span> <span class="kt" style="color: #458; font-weight: 600;">False</span> <span class="n" style="color: #333;">new_ev</span> <span class="kt" style="color: #458; font-weight: 600;">ReprEq</span> <span class="n" style="color: #333;">ty1'</span> <span class="n" style="color: #333;">ty1'</span> <span class="n" style="color: #333;">ty2</span> <span class="n" style="color: #333;">ps_ty2</span> <span class="p">}</span></span>

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<td class="diff-line-num new_line" data-linenumber="1370" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1370

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<pre style="margin: 0;"> <span id="LC1370" class="line" lang="haskell">  <span class="kr" style="font-weight: 600;">where</span></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="1439" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="1440" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1439,7 +1440,7 @@ canEqCast flat ev eq_rel swapped ty1 co1 ty2 ps_ty2</td>

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<pre style="margin: 0;"> <span id="LC1440" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">traceTcS</span> <span class="s" style="color: #d14;">"Decomposing cast"</span> <span class="p">(</span><span class="n" style="color: #333;">vcat</span> <span class="p">[</span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">ev</span></span>

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<pre style="margin: 0;"> <span id="LC1441" class="line" lang="haskell">                                           <span class="p">,</span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">ty1</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"|>"</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">co1</span></span>

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1442

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<pre style="margin: 0;"> <span id="LC1442" class="line" lang="haskell">                                           <span class="p">,</span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">ps_ty2</span> <span class="p">])</span></span>

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<pre style="margin: 0;">-<span id="LC1442" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">new_ev</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rewriteEqEvidence</span> <span class="n" style="color: #333;">ev</span> <span class="n" style="color: #333;">swapped</span> <span class="n" style="color: #333;">ty1</span> <span class="n" style="color: #333;">ps_ty2</span></span>

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<pre style="margin: 0;">+<span id="LC1443" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">new_ev</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rewriteEqEvidence</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left">NoWRW</span></span><span class="idiff right"> </span><span class="n" style="color: #333;">ev</span> <span class="n" style="color: #333;">swapped</span> <span class="n" style="color: #333;">ty1</span> <span class="n" style="color: #333;">ps_ty2</span></span>

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<td class="diff-line-num new_line" data-linenumber="1444" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC1444" class="line" lang="haskell">                                     <span class="p">(</span><span class="n" style="color: #333;">mkTcGReflRightCo</span> <span class="n" style="color: #333;">role</span> <span class="n" style="color: #333;">ty1</span> <span class="n" style="color: #333;">co1</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num new_line" data-linenumber="1445" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC1445" class="line" lang="haskell">                                     <span class="p">(</span><span class="n" style="color: #333;">mkTcReflCo</span> <span class="n" style="color: #333;">role</span> <span class="n" style="color: #333;">ps_ty2</span><span class="p">)</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC1446" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">can_eq_nc</span> <span class="n" style="color: #333;">flat</span> <span class="n" style="color: #333;">new_ev</span> <span class="n" style="color: #333;">eq_rel</span> <span class="n" style="color: #333;">ty1</span> <span class="n" style="color: #333;">ty1</span> <span class="n" style="color: #333;">ty2</span> <span class="n" style="color: #333;">ps_ty2</span> <span class="p">}</span></span>

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<td class="diff-line-num unfold js-unfold new_line" data-linenumber="1733" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1732,14 +1733,14 @@ canEqFailure :: CtEvidence -> EqRel</td>

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<pre style="margin: 0;"> <span id="LC1733" class="line" lang="haskell"><span class="n" style="color: #333;">canEqFailure</span> <span class="n" style="color: #333;">ev</span> <span class="kt" style="color: #458; font-weight: 600;">NomEq</span> <span class="n" style="color: #333;">ty1</span> <span class="n" style="color: #333;">ty2</span></span>

</pre>

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1733

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<td class="diff-line-num new_line" data-linenumber="1734" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1734

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<pre style="margin: 0;"> <span id="LC1734" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">canEqHardFailure</span> <span class="n" style="color: #333;">ev</span> <span class="n" style="color: #333;">ty1</span> <span class="n" style="color: #333;">ty2</span></span>

</pre>

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1734

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<td class="diff-line-num new_line" data-linenumber="1735" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1735

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<pre style="margin: 0;"> <span id="LC1735" class="line" lang="haskell"><span class="n" style="color: #333;">canEqFailure</span> <span class="n" style="color: #333;">ev</span> <span class="kt" style="color: #458; font-weight: 600;">ReprEq</span> <span class="n" style="color: #333;">ty1</span> <span class="n" style="color: #333;">ty2</span></span>

</pre>

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1735

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<td class="diff-line-num new_line old" data-linenumber="1736" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC1735" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">xi1</span><span class="p">,</span> <span class="n" style="color: #333;">co1</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">flatten</span> <span class="kt" style="color: #458; font-weight: 600;">FM_FlattenAll</span> <span class="n" style="color: #333;">ev</span> <span class="n" style="color: #333;">ty1</span></span>

</pre>

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1736

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<td class="diff-line-num new_line old" data-linenumber="1736" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC1736" class="line" lang="haskell">       <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">xi2</span><span class="p">,</span> <span class="n" style="color: #333;">co2</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">flatten</span> <span class="kt" style="color: #458; font-weight: 600;">FM_FlattenAll</span> <span class="n" style="color: #333;">ev</span> <span class="n" style="color: #333;">ty2</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="1737" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="1736" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1736

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<pre style="margin: 0;">+<span id="LC1736" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">xi1</span><span class="p">,</span> <span class="n" style="color: #333;">co1</span><span class="p"><span class="idiff left">,</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">wrw1</span></span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">flatten</span> <span class="kt" style="color: #458; font-weight: 600;">FM_FlattenAll</span> <span class="n" style="color: #333;">ev</span> <span class="n" style="color: #333;">ty1</span></span>

</pre>

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1737

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<pre style="margin: 0;">+<span id="LC1737" class="line" lang="haskell">       <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">xi2</span><span class="p">,</span> <span class="n" style="color: #333;">co2</span><span class="p"><span class="idiff left">,</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">wrw2</span></span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">flatten</span> <span class="kt" style="color: #458; font-weight: 600;">FM_FlattenAll</span> <span class="n" style="color: #333;">ev</span> <span class="n" style="color: #333;">ty2</span></span>

</pre>

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1737

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<td class="diff-line-num new_line" data-linenumber="1738" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1738

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<pre style="margin: 0;"> <span id="LC1738" class="line" lang="haskell">            <span class="c1" style="color: #998; font-style: italic;">-- We must flatten the types before putting them in the</span></span>

</pre>

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1738

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<td class="diff-line-num new_line" data-linenumber="1739" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1739

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<pre style="margin: 0;"> <span id="LC1739" class="line" lang="haskell">            <span class="c1" style="color: #998; font-style: italic;">-- inert set, so that we are sure to kick them out when</span></span>

</pre>

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1739

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<td class="diff-line-num new_line" data-linenumber="1740" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1740

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<pre style="margin: 0;"> <span id="LC1740" class="line" lang="haskell">            <span class="c1" style="color: #998; font-style: italic;">-- new equalities become available</span></span>

</pre>

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1740

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<td class="diff-line-num new_line" data-linenumber="1741" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1741

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<pre style="margin: 0;"> <span id="LC1741" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">traceTcS</span> <span class="s" style="color: #d14;">"canEqFailure with ReprEq"</span> <span class="o" style="font-weight: 600;">$</span></span>

</pre>

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1741

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<td class="diff-line-num new_line" data-linenumber="1742" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1742

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<pre style="margin: 0;"> <span id="LC1742" class="line" lang="haskell">         <span class="n" style="color: #333;">vcat</span> <span class="p">[</span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">ev</span><span class="p">,</span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">ty1</span><span class="p">,</span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">ty2</span><span class="p">,</span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">xi1</span><span class="p">,</span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">xi2</span> <span class="p">]</span></span>

</pre>

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1742

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<td class="diff-line-num new_line old" data-linenumber="1743" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC1742" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">new_ev</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rewriteEqEvidence</span> <span class="n" style="color: #333;">ev</span> <span class="kt" style="color: #458; font-weight: 600;">NotSwapped</span> <span class="n" style="color: #333;">xi1</span> <span class="n" style="color: #333;">xi2</span> <span class="n" style="color: #333;">co1</span> <span class="n" style="color: #333;">co2</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="1743" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1743

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<pre style="margin: 0;">+<span id="LC1743" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">new_ev</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rewriteEqEvidence</span> <span class="p"><span class="idiff left">(</span></span><span class="n" style="color: #333;"><span class="idiff">wrw1</span></span><span class="idiff"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">S</span></span><span class="o" style="font-weight: 600;"><span class="idiff">.<></span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">wrw2</span></span><span class="p"><span class="idiff">)</span></span><span class="idiff right"> </span><span class="n" style="color: #333;">ev</span> <span class="kt" style="color: #458; font-weight: 600;">NotSwapped</span> <span class="n" style="color: #333;">xi1</span> <span class="n" style="color: #333;">xi2</span> <span class="n" style="color: #333;">co1</span> <span class="n" style="color: #333;">co2</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC1744" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">continueWith</span> <span class="p">(</span><span class="n" style="color: #333;">mkIrredCt</span> <span class="kt" style="color: #458; font-weight: 600;">OtherCIS</span> <span class="n" style="color: #333;">new_ev</span><span class="p">)</span> <span class="p">}</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC1745" class="line" lang="haskell"></span>

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<pre style="margin: 0;"> <span id="LC1746" class="line" lang="haskell"><span class="cd">-- | Call when canonicalizing an equality fails with utterly no hope.</span></span>

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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1747,9 +1748,9 @@ canEqHardFailure :: CtEvidence</td>

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<pre style="margin: 0;"> <span id="LC1748" class="line" lang="haskell">                 <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcType</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcType</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcS</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">StopOrContinue</span> <span class="kt" style="color: #458; font-weight: 600;">Ct</span><span class="p">)</span></span>

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<pre style="margin: 0;"> <span id="LC1749" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See Note [Make sure that insolubles are fully rewritten]</span></span>

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<pre style="margin: 0;"> <span id="LC1750" class="line" lang="haskell"><span class="n" style="color: #333;">canEqHardFailure</span> <span class="n" style="color: #333;">ev</span> <span class="n" style="color: #333;">ty1</span> <span class="n" style="color: #333;">ty2</span></span>

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<pre style="margin: 0;">-<span id="LC1750" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">s1</span><span class="p">,</span> <span class="n" style="color: #333;">co1</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">flatten</span> <span class="kt" style="color: #458; font-weight: 600;">FM_SubstOnly</span> <span class="n" style="color: #333;">ev</span> <span class="n" style="color: #333;">ty1</span></span>

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<pre style="margin: 0;">-<span id="LC1751" class="line" lang="haskell">       <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">s2</span><span class="p">,</span> <span class="n" style="color: #333;">co2</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">flatten</span> <span class="kt" style="color: #458; font-weight: 600;">FM_SubstOnly</span> <span class="n" style="color: #333;">ev</span> <span class="n" style="color: #333;">ty2</span></span>

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<pre style="margin: 0;">-<span id="LC1752" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">new_ev</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rewriteEqEvidence</span> <span class="n" style="color: #333;">ev</span> <span class="kt" style="color: #458; font-weight: 600;">NotSwapped</span> <span class="n" style="color: #333;">s1</span> <span class="n" style="color: #333;">s2</span> <span class="n" style="color: #333;">co1</span> <span class="n" style="color: #333;">co2</span></span>

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<pre style="margin: 0;">+<span id="LC1751" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">s1</span><span class="p">,</span> <span class="n" style="color: #333;">co1</span><span class="p"><span class="idiff left">,</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">wrw1</span></span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">flatten</span> <span class="kt" style="color: #458; font-weight: 600;">FM_SubstOnly</span> <span class="n" style="color: #333;">ev</span> <span class="n" style="color: #333;">ty1</span></span>

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<pre style="margin: 0;">+<span id="LC1752" class="line" lang="haskell">       <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">s2</span><span class="p">,</span> <span class="n" style="color: #333;">co2</span><span class="p"><span class="idiff left">,</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">wrw2</span></span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">flatten</span> <span class="kt" style="color: #458; font-weight: 600;">FM_SubstOnly</span> <span class="n" style="color: #333;">ev</span> <span class="n" style="color: #333;">ty2</span></span>

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<pre style="margin: 0;">+<span id="LC1753" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">new_ev</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rewriteEqEvidence</span> <span class="p"><span class="idiff left">(</span></span><span class="n" style="color: #333;"><span class="idiff">wrw1</span></span><span class="idiff"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">S</span></span><span class="o" style="font-weight: 600;"><span class="idiff">.<></span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">wrw2</span></span><span class="p"><span class="idiff">)</span></span><span class="idiff right"> </span><span class="n" style="color: #333;">ev</span> <span class="kt" style="color: #458; font-weight: 600;">NotSwapped</span> <span class="n" style="color: #333;">s1</span> <span class="n" style="color: #333;">s2</span> <span class="n" style="color: #333;">co1</span> <span class="n" style="color: #333;">co2</span></span>

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<pre style="margin: 0;"> <span id="LC1754" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">continueWith</span> <span class="p">(</span><span class="n" style="color: #333;">mkIrredCt</span> <span class="kt" style="color: #458; font-weight: 600;">InsolubleCIS</span> <span class="n" style="color: #333;">new_ev</span><span class="p">)</span> <span class="p">}</span></span>

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<pre style="margin: 0;"> <span id="LC1755" class="line" lang="haskell"></span>

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<pre style="margin: 0;"> <span id="LC1756" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">{-</span></span>

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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1884,7 +1885,7 @@ canCFunEqCan :: CtEvidence</td>

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<pre style="margin: 0;"> <span id="LC1885" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Instead, flatten the args. The RHS is an fsk, which we</span></span>

</pre>

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1885

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1886

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<pre style="margin: 0;"> <span id="LC1886" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- must *not* substitute.</span></span>

</pre>

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1886

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<td class="diff-line-num new_line" data-linenumber="1887" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1887

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<pre style="margin: 0;"> <span id="LC1887" class="line" lang="haskell"><span class="n" style="color: #333;">canCFunEqCan</span> <span class="n" style="color: #333;">ev</span> <span class="n" style="color: #333;">fn</span> <span class="n" style="color: #333;">tys</span> <span class="n" style="color: #333;">fsk</span></span>

</pre>

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1887

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<td class="diff-line-num new_line old" data-linenumber="1888" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC1887" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">tys'</span><span class="p">,</span> <span class="n" style="color: #333;">cos</span><span class="p">,</span> <span class="n" style="color: #333;">kind_co</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">flattenArgsNom</span> <span class="n" style="color: #333;">ev</span> <span class="n" style="color: #333;">fn</span> <span class="n" style="color: #333;">tys</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="1888" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1888

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<pre style="margin: 0;">+<span id="LC1888" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">tys'</span><span class="p">,</span> <span class="n" style="color: #333;">cos</span><span class="p">,</span> <span class="n" style="color: #333;">kind_co</span><span class="p"><span class="idiff left">,</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">wrw</span></span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">flattenArgsNom</span> <span class="n" style="color: #333;">ev</span> <span class="n" style="color: #333;">fn</span> <span class="n" style="color: #333;">tys</span></span>

</pre>

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<td class="diff-line-num new_line" data-linenumber="1889" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1889

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<pre style="margin: 0;"> <span id="LC1889" class="line" lang="haskell">                        <span class="c1" style="color: #998; font-style: italic;">-- cos :: tys' ~ tys</span></span>

</pre>

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1889

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1890

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<pre style="margin: 0;"> <span id="LC1890" class="line" lang="haskell"></span>

</pre>

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1890

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1891

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<pre style="margin: 0;"> <span id="LC1891" class="line" lang="haskell">       <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">lhs_co</span>  <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mkTcTyConAppCo</span> <span class="kt" style="color: #458; font-weight: 600;">Nominal</span> <span class="n" style="color: #333;">fn</span> <span class="n" style="color: #333;">cos</span></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="1892" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="1893" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1892,11 +1893,13 @@ canCFunEqCan ev fn tys fsk</td>

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<pre style="margin: 0;"> <span id="LC1893" class="line" lang="haskell">             <span class="n" style="color: #333;">new_lhs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mkTyConApp</span> <span class="n" style="color: #333;">fn</span> <span class="n" style="color: #333;">tys'</span></span>

</pre>

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1894

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<pre style="margin: 0;"> <span id="LC1894" class="line" lang="haskell"></span>

</pre>

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1894

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<pre style="margin: 0;"> <span id="LC1895" class="line" lang="haskell">             <span class="n" style="color: #333;">flav</span>    <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ctEvFlavour</span> <span class="n" style="color: #333;">ev</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="1896" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1896

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<pre style="margin: 0;">+<span id="LC1896" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="1897" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1897

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<pre style="margin: 0;">+<span id="LC1897" class="line" lang="haskell">             <span class="n" style="color: #333;">report_as</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">updateReportAs</span> <span class="n" style="color: #333;">wrw</span> <span class="p">(</span><span class="n" style="color: #333;">ctEvPred</span> <span class="n" style="color: #333;">ev</span><span class="p">)</span> <span class="p">(</span><span class="n" style="color: #333;">ctEvReportAs</span> <span class="n" style="color: #333;">ev</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num new_line" data-linenumber="1898" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC1898" class="line" lang="haskell">       <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">ev'</span><span class="p">,</span> <span class="n" style="color: #333;">fsk'</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num new_line" data-linenumber="1899" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1899

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<pre style="margin: 0;"> <span id="LC1899" class="line" lang="haskell">           <span class="o" style="font-weight: 600;"><-</span> <span class="kr" style="font-weight: 600;">if</span> <span class="n" style="color: #333;">isTcReflexiveCo</span> <span class="n" style="color: #333;">kind_co</span>   <span class="c1" style="color: #998; font-style: italic;">-- See Note [canCFunEqCan]</span></span>

</pre>

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1897

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1900

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<pre style="margin: 0;"> <span id="LC1900" class="line" lang="haskell">              <span class="kr" style="font-weight: 600;">then</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">traceTcS</span> <span class="s" style="color: #d14;">"canCFunEqCan: refl"</span> <span class="p">(</span><span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">new_lhs</span><span class="p">)</span></span>

</pre>

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1898

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1901

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<pre style="margin: 0;"> <span id="LC1901" class="line" lang="haskell">                      <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">fsk_ty</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mkTyVarTy</span> <span class="n" style="color: #333;">fsk</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="1899" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

1899

</td>

<td class="diff-line-num new_line old" data-linenumber="1902" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC1899" class="line" lang="haskell">                      <span class="p">;</span> <span class="n" style="color: #333;">ev'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rewriteEqEvidence</span> <span class="n" style="color: #333;">ev</span> <span class="kt" style="color: #458; font-weight: 600;">NotSwapped</span> <span class="n" style="color: #333;">new_lhs</span> <span class="n" style="color: #333;">fsk_ty</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="1900" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="1902" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1902

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<pre style="margin: 0;">+<span id="LC1902" class="line" lang="haskell">                      <span class="p">;</span> <span class="n" style="color: #333;">ev'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rewriteEqEvidence</span> <span class="n" style="color: #333;"><span class="idiff left">wrw</span></span><span class="idiff right"> </span><span class="n" style="color: #333;">ev</span> <span class="kt" style="color: #458; font-weight: 600;">NotSwapped</span> <span class="n" style="color: #333;">new_lhs</span> <span class="n" style="color: #333;">fsk_ty</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1900" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1900

</td>

<td class="diff-line-num new_line" data-linenumber="1903" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1903

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<pre style="margin: 0;"> <span id="LC1903" class="line" lang="haskell">                                                 <span class="n" style="color: #333;">lhs_co</span> <span class="p">(</span><span class="n" style="color: #333;">mkTcNomReflCo</span> <span class="n" style="color: #333;">fsk_ty</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1901" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1901

</td>

<td class="diff-line-num new_line" data-linenumber="1904" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1904

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<pre style="margin: 0;"> <span id="LC1904" class="line" lang="haskell">                      <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">ev'</span><span class="p">,</span> <span class="n" style="color: #333;">fsk</span><span class="p">)</span> <span class="p">}</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1902" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1902

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<td class="diff-line-num new_line" data-linenumber="1905" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1905

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<pre style="margin: 0;"> <span id="LC1905" class="line" lang="haskell">              <span class="kr" style="font-weight: 600;">else</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">traceTcS</span> <span class="s" style="color: #d14;">"canCFunEqCan: non-refl"</span> <span class="o" style="font-weight: 600;">$</span></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="1907" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="1910" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1907,7 +1910,7 @@ canCFunEqCan ev fn tys fsk</td>

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<td class="diff-line-num old_line" data-linenumber="1907" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1907

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<td class="diff-line-num new_line" data-linenumber="1910" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1910

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<pre style="margin: 0;"> <span id="LC1910" class="line" lang="haskell">                             <span class="p">,</span> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"New LHS"</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">hang</span> <span class="p">(</span><span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">new_lhs</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1908" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1908

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<td class="diff-line-num new_line" data-linenumber="1911" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1911

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<pre style="margin: 0;"> <span id="LC1911" class="line" lang="haskell">                                                     <span class="mi" style="color: #099;">2</span> <span class="p">(</span><span class="n" style="color: #333;">dcolon</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">ppr</span> <span class="p">(</span><span class="n" style="color: #333;">tcTypeKind</span> <span class="n" style="color: #333;">new_lhs</span><span class="p">))</span> <span class="p">]</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1909" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1909

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<td class="diff-line-num new_line" data-linenumber="1912" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1912

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<pre style="margin: 0;"> <span id="LC1912" class="line" lang="haskell">                      <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">ev'</span><span class="p">,</span> <span class="n" style="color: #333;">new_co</span><span class="p">,</span> <span class="n" style="color: #333;">new_fsk</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="1910" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

1910

</td>

<td class="diff-line-num new_line old" data-linenumber="1913" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC1910" class="line" lang="haskell">                          <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">newFlattenSkolem</span> <span class="n" style="color: #333;">flav</span> <span class="p">(</span><span class="n" style="color: #333;">ctEvLoc</span> <span class="n" style="color: #333;">ev</span><span class="p">)</span> <span class="n" style="color: #333;">fn</span> <span class="n" style="color: #333;">tys'</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="1911" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="1913" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1913

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<pre style="margin: 0;">+<span id="LC1913" class="line" lang="haskell">                          <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">newFlattenSkolem</span> <span class="n" style="color: #333;">flav</span> <span class="p">(</span><span class="n" style="color: #333;">ctEvLoc</span> <span class="n" style="color: #333;">ev</span><span class="p">)</span> <span class="n" style="color: #333;"><span class="idiff left">report_as</span></span><span class="idiff right"> </span><span class="n" style="color: #333;">fn</span> <span class="n" style="color: #333;">tys'</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1911" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1911

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<td class="diff-line-num new_line" data-linenumber="1914" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1914

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<pre style="margin: 0;"> <span id="LC1914" class="line" lang="haskell">                      <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">xi</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mkTyVarTy</span> <span class="n" style="color: #333;">new_fsk</span> <span class="p">`</span><span class="n" style="color: #333;">mkCastTy</span><span class="p">`</span> <span class="n" style="color: #333;">kind_co</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1912" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1912

</td>

<td class="diff-line-num new_line" data-linenumber="1915" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1915

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<pre style="margin: 0;"> <span id="LC1915" class="line" lang="haskell">                               <span class="c1" style="color: #998; font-style: italic;">-- sym lhs_co :: F tys ~ F tys'</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1913" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1913

</td>

<td class="diff-line-num new_line" data-linenumber="1916" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1916

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<pre style="margin: 0;"> <span id="LC1916" class="line" lang="haskell">                               <span class="c1" style="color: #998; font-style: italic;">-- new_co     :: F tys' ~ new_fsk</span></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="1967" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="1970" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1967,7 +1970,9 @@ canEqTyVarHetero ev eq_rel swapped tv1 ps_tv1 ki1 xi2 ps_xi2 ki2</td>

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<td class="diff-line-num old_line" data-linenumber="1967" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1967

</td>

<td class="diff-line-num new_line" data-linenumber="1970" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1970

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<pre style="margin: 0;"> <span id="LC1970" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1968" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1968

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<td class="diff-line-num new_line" data-linenumber="1971" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1971

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<pre style="margin: 0;"> <span id="LC1971" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">traceTcS</span> <span class="s" style="color: #d14;">"Hetero equality gives rise to kind equality"</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1969" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1969

</td>

<td class="diff-line-num new_line" data-linenumber="1972" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1972

</td>

<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC1972" class="line" lang="haskell">           <span class="p">(</span><span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">kind_co</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">dcolon</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">sep</span> <span class="p">[</span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">ki2</span><span class="p">,</span> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"~#"</span><span class="p">,</span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">ki1</span> <span class="p">])</span></span>

</pre>

</td>

</tr>

<tr class="line_holder old" id="" style="line-height: 1.6;">

<td class="diff-line-num old old_line" data-linenumber="1970" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

1970

</td>

<td class="diff-line-num new_line old" data-linenumber="1973" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

</td>

<td class="line_content old" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#fbe9eb">

<pre style="margin: 0;">-<span id="LC1970" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">type_ev</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rewriteEqEvidence</span> <span class="n" style="color: #333;">ev</span> <span class="n" style="color: #333;">swapped</span> <span class="n" style="color: #333;">lhs'</span> <span class="n" style="color: #333;">rhs'</span> <span class="n" style="color: #333;">lhs_co</span> <span class="n" style="color: #333;">rhs_co</span></span>

</pre>

</td>

</tr>

<tr class="line_holder new" id="" style="line-height: 1.6;">

<td class="diff-line-num new old_line" data-linenumber="1971" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="1973" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1973

</td>

<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC1973" class="line" lang="haskell">             <span class="c1" style="color: #998; font-style: italic;">-- YesWRW: we've just emitted a new wanted and rewrote with it</span></span>

</pre>

</td>

</tr>

<tr class="line_holder new" id="" style="line-height: 1.6;">

<td class="diff-line-num new old_line" data-linenumber="1971" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="1974" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1974

</td>

<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC1974" class="line" lang="haskell">             <span class="c1" style="color: #998; font-style: italic;">-- See Note [Equalities with incompatible kinds]</span></span>

</pre>

</td>

</tr>

<tr class="line_holder new" id="" style="line-height: 1.6;">

<td class="diff-line-num new old_line" data-linenumber="1971" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="1975" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1975

</td>

<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC1975" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">type_ev</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rewriteEqEvidence</span> <span class="kt" style="color: #458; font-weight: 600;">YesWRW</span> <span class="n" style="color: #333;">ev</span> <span class="n" style="color: #333;">swapped</span> <span class="n" style="color: #333;">lhs'</span> <span class="n" style="color: #333;">rhs'</span> <span class="n" style="color: #333;">lhs_co</span> <span class="n" style="color: #333;">rhs_co</span></span>

</pre>

</td>

</tr>

<tr class="line_holder" id="" style="line-height: 1.6;">

<td class="diff-line-num old_line" data-linenumber="1971" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1971

</td>

<td class="diff-line-num new_line" data-linenumber="1976" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1976

</td>

<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC1976" class="line" lang="haskell"></span>

</pre>

</td>

</tr>

<tr class="line_holder" id="" style="line-height: 1.6;">

<td class="diff-line-num old_line" data-linenumber="1972" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1972

</td>

<td class="diff-line-num new_line" data-linenumber="1977" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1977

</td>

<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC1977" class="line" lang="haskell">          <span class="c1" style="color: #998; font-style: italic;">-- rewriteEqEvidence carries out the swap, so we're NotSwapped any more</span></span>

</pre>

</td>

</tr>

<tr class="line_holder" id="" style="line-height: 1.6;">

<td class="diff-line-num old_line" data-linenumber="1973" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1973

</td>

<td class="diff-line-num new_line" data-linenumber="1978" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1978

</td>

<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC1978" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">canEqTyVarHomo</span> <span class="n" style="color: #333;">type_ev</span> <span class="n" style="color: #333;">eq_rel</span> <span class="kt" style="color: #458; font-weight: 600;">NotSwapped</span> <span class="n" style="color: #333;">tv1</span> <span class="n" style="color: #333;">ps_tv1</span> <span class="n" style="color: #333;">rhs'</span> <span class="n" style="color: #333;">ps_rhs'</span> <span class="p">}</span></span>

</pre>

</td>

</tr>

<tr class="line_holder match" id="" style="line-height: 1.6;">

<td class="diff-line-num unfold js-unfold old_line" data-linenumber="2022" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="2027" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -2022,7 +2027,7 @@ canEqTyVarHomo ev eq_rel swapped tv1 ps_xi1 xi2 _</td>

</tr>

<tr class="line_holder" id="" style="line-height: 1.6;">

<td class="diff-line-num old_line" data-linenumber="2022" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2022

</td>

<td class="diff-line-num new_line" data-linenumber="2027" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2027

</td>

<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC2027" class="line" lang="haskell">             <span class="n" style="color: #333;">new_rhs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mkTyVarTy</span> <span class="n" style="color: #333;">tv2</span></span>

</pre>

</td>

</tr>

<tr class="line_holder" id="" style="line-height: 1.6;">

<td class="diff-line-num old_line" data-linenumber="2023" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2023

</td>

<td class="diff-line-num new_line" data-linenumber="2028" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2028

</td>

<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC2028" class="line" lang="haskell">             <span class="n" style="color: #333;">rhs_co</span>  <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mkTcGReflRightCo</span> <span class="n" style="color: #333;">role</span> <span class="n" style="color: #333;">new_rhs</span> <span class="n" style="color: #333;">co2</span></span>

</pre>

</td>

</tr>

<tr class="line_holder" id="" style="line-height: 1.6;">

<td class="diff-line-num old_line" data-linenumber="2024" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2024

</td>

<td class="diff-line-num new_line" data-linenumber="2029" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2029

</td>

<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC2029" class="line" lang="haskell"></span>

</pre>

</td>

</tr>

<tr class="line_holder old" id="" style="line-height: 1.6;">

<td class="diff-line-num old old_line" data-linenumber="2025" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

2025

</td>

<td class="diff-line-num new_line old" data-linenumber="2030" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

</td>

<td class="line_content old" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#fbe9eb">

<pre style="margin: 0;">-<span id="LC2025" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">new_ev</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rewriteEqEvidence</span> <span class="n" style="color: #333;">ev</span> <span class="n" style="color: #333;">swapped</span> <span class="n" style="color: #333;">new_lhs</span> <span class="n" style="color: #333;">new_rhs</span> <span class="n" style="color: #333;">lhs_co</span> <span class="n" style="color: #333;">rhs_co</span></span>

</pre>

</td>

</tr>

<tr class="line_holder new" id="" style="line-height: 1.6;">

<td class="diff-line-num new old_line" data-linenumber="2026" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="2030" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

2030

</td>

<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC2030" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">new_ev</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rewriteEqEvidence</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left">NoWRW</span></span><span class="idiff right"> </span><span class="n" style="color: #333;">ev</span> <span class="n" style="color: #333;">swapped</span> <span class="n" style="color: #333;">new_lhs</span> <span class="n" style="color: #333;">new_rhs</span> <span class="n" style="color: #333;">lhs_co</span> <span class="n" style="color: #333;">rhs_co</span></span>

</pre>

</td>

</tr>

<tr class="line_holder" id="" style="line-height: 1.6;">

<td class="diff-line-num old_line" data-linenumber="2026" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2026

</td>

<td class="diff-line-num new_line" data-linenumber="2031" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2031

</td>

<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC2031" class="line" lang="haskell"></span>

</pre>

</td>

</tr>

<tr class="line_holder" id="" style="line-height: 1.6;">

<td class="diff-line-num old_line" data-linenumber="2027" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2027

</td>

<td class="diff-line-num new_line" data-linenumber="2032" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2032

</td>

<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC2032" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">dflags</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">getDynFlags</span></span>

</pre>

</td>

</tr>

<tr class="line_holder" id="" style="line-height: 1.6;">

<td class="diff-line-num old_line" data-linenumber="2028" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2028

</td>

<td class="diff-line-num new_line" data-linenumber="2033" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2033

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<pre style="margin: 0;"> <span id="LC2033" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">canEqTyVar2</span> <span class="n" style="color: #333;">dflags</span> <span class="n" style="color: #333;">new_ev</span> <span class="n" style="color: #333;">eq_rel</span> <span class="kt" style="color: #458; font-weight: 600;">IsSwapped</span> <span class="n" style="color: #333;">tv2</span> <span class="p">(</span><span class="n" style="color: #333;">ps_xi1</span> <span class="p">`</span><span class="n" style="color: #333;">mkCastTy</span><span class="p">`</span> <span class="n" style="color: #333;">sym_co2</span><span class="p">)</span> <span class="p">}</span></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="2054" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="2059" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -2054,14 +2059,14 @@ canEqTyVar2 dflags ev eq_rel swapped tv1 rhs</td>

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2059

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<pre style="margin: 0;"> <span id="LC2059" class="line" lang="haskell">     <span class="c1" style="color: #998; font-style: italic;">-- equalities, in case have  x ~ (y :: ..x...)</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="2055" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2055

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2060

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<pre style="margin: 0;"> <span id="LC2060" class="line" lang="haskell">     <span class="c1" style="color: #998; font-style: italic;">-- #12593</span></span>

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<td class="diff-line-num old_line" data-linenumber="2056" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2056

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<td class="diff-line-num new_line" data-linenumber="2061" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2061

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<pre style="margin: 0;"> <span id="LC2061" class="line" lang="haskell">     <span class="c1" style="color: #998; font-style: italic;">-- guarantees (TyEq:OC), (TyEq:F), and (TyEq:H)</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="2057" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

2057

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<td class="diff-line-num new_line old" data-linenumber="2062" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC2057" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">new_ev</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rewriteEqEvidence</span> <span class="n" style="color: #333;">ev</span> <span class="n" style="color: #333;">swapped</span> <span class="n" style="color: #333;">lhs</span> <span class="n" style="color: #333;">rhs'</span> <span class="n" style="color: #333;">rewrite_co1</span> <span class="n" style="color: #333;">rewrite_co2</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="2058" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="2062" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC2062" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">new_ev</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rewriteEqEvidence</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left">NoWRW</span></span><span class="idiff right"> </span><span class="n" style="color: #333;">ev</span> <span class="n" style="color: #333;">swapped</span> <span class="n" style="color: #333;">lhs</span> <span class="n" style="color: #333;">rhs'</span> <span class="n" style="color: #333;">rewrite_co1</span> <span class="n" style="color: #333;">rewrite_co2</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="2058" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2058

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<td class="diff-line-num new_line" data-linenumber="2063" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2063

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<pre style="margin: 0;"> <span id="LC2063" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">continueWith</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">CTyEqCan</span> <span class="p">{</span> <span class="n" style="color: #333;">cc_ev</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">new_ev</span><span class="p">,</span> <span class="n" style="color: #333;">cc_tyvar</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tv1</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="2059" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2059

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<td class="diff-line-num new_line" data-linenumber="2064" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2064

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<pre style="margin: 0;"> <span id="LC2064" class="line" lang="haskell">                                <span class="p">,</span> <span class="n" style="color: #333;">cc_rhs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">rhs'</span><span class="p">,</span> <span class="n" style="color: #333;">cc_eq_rel</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">eq_rel</span> <span class="p">})</span> <span class="p">}</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="2060" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2060

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<td class="diff-line-num new_line" data-linenumber="2065" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2065

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<pre style="margin: 0;"> <span id="LC2065" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="2061" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2061

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<td class="diff-line-num new_line" data-linenumber="2066" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC2066" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">otherwise</span>  <span class="c1" style="color: #998; font-style: italic;">-- For some reason (occurs check, or forall) we can't unify</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="2062" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2062

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<td class="diff-line-num new_line" data-linenumber="2067" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC2067" class="line" lang="haskell">               <span class="c1" style="color: #998; font-style: italic;">-- We must not use it for further rewriting!</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="2063" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2063

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<td class="diff-line-num new_line" data-linenumber="2068" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC2068" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">traceTcS</span> <span class="s" style="color: #d14;">"canEqTyVar2 can't unify"</span> <span class="p">(</span><span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">tv1</span> <span class="o" style="font-weight: 600;">$$</span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">rhs</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="2064" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<td class="diff-line-num new_line old" data-linenumber="2069" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC2064" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">new_ev</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rewriteEqEvidence</span> <span class="n" style="color: #333;">ev</span> <span class="n" style="color: #333;">swapped</span> <span class="n" style="color: #333;">lhs</span> <span class="n" style="color: #333;">rhs</span> <span class="n" style="color: #333;">rewrite_co1</span> <span class="n" style="color: #333;">rewrite_co2</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="2065" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="2069" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

2069

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<pre style="margin: 0;">+<span id="LC2069" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">new_ev</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rewriteEqEvidence</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left">NoWRW</span></span><span class="idiff right"> </span><span class="n" style="color: #333;">ev</span> <span class="n" style="color: #333;">swapped</span> <span class="n" style="color: #333;">lhs</span> <span class="n" style="color: #333;">rhs</span> <span class="n" style="color: #333;">rewrite_co1</span> <span class="n" style="color: #333;">rewrite_co2</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="2065" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2065

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<td class="diff-line-num new_line" data-linenumber="2070" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2070

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<pre style="margin: 0;"> <span id="LC2070" class="line" lang="haskell">       <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">status</span> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">isInsolubleOccursCheck</span> <span class="n" style="color: #333;">eq_rel</span> <span class="n" style="color: #333;">tv1</span> <span class="n" style="color: #333;">rhs</span></span>

</pre>

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2066

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<td class="diff-line-num new_line" data-linenumber="2071" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2071

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<pre style="margin: 0;"> <span id="LC2071" class="line" lang="haskell">                    <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">InsolubleCIS</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="2067" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2067

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<td class="diff-line-num new_line" data-linenumber="2072" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2072

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<pre style="margin: 0;"> <span id="LC2072" class="line" lang="haskell">             <span class="c1" style="color: #998; font-style: italic;">-- If we have a ~ [a], it is not canonical, and in particular</span></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="2293" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="2298" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -2293,7 +2298,10 @@ andWhenContinue tcs1 tcs2</td>

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<td class="diff-line-num old_line" data-linenumber="2293" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2293

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<td class="diff-line-num new_line" data-linenumber="2298" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2298

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<pre style="margin: 0;"> <span id="LC2298" class="line" lang="haskell">           <span class="kt" style="color: #458; font-weight: 600;">ContinueWith</span> <span class="n" style="color: #333;">ct</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">tcs2</span> <span class="n" style="color: #333;">ct</span> <span class="p">}</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="2294" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2294

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<td class="diff-line-num new_line" data-linenumber="2299" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2299

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<pre style="margin: 0;"> <span id="LC2299" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">infixr</span> <span class="mi" style="color: #099;">0</span> <span class="p">`</span><span class="n" style="color: #333;">andWhenContinue</span><span class="p">`</span>    <span class="c1" style="color: #998; font-style: italic;">-- allow chaining with ($)</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="2295" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2295

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<td class="diff-line-num new_line" data-linenumber="2300" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2300

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<pre style="margin: 0;"> <span id="LC2300" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="2296" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

2296

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<td class="diff-line-num new_line old" data-linenumber="2301" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC2296" class="line" lang="haskell"><span class="n" style="color: #333;">rewriteEvidence</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">CtEvidence</span>   <span class="c1" style="color: #998; font-style: italic;">-- old evidence</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="2297" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="2301" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

2301

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<pre style="margin: 0;">+<span id="LC2301" class="line" lang="haskell"><span class="n" style="color: #333;">rewriteEvidence</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">WRWFlag</span>      <span class="c1" style="color: #998; font-style: italic;">-- did wanteds rewrite wanteds?</span></span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="2297" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="2302" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

2302

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<pre style="margin: 0;">+<span id="LC2302" class="line" lang="haskell">                                <span class="c1" style="color: #998; font-style: italic;">-- See Note [Wanteds rewrite Wanteds]</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="2297" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="2303" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

2303

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<pre style="margin: 0;">+<span id="LC2303" class="line" lang="haskell">                                <span class="c1" style="color: #998; font-style: italic;">-- in GHC.Tc.Types.Constraint</span></span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="2297" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="2304" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

2304

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<pre style="margin: 0;">+<span id="LC2304" class="line" lang="haskell">                <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">CtEvidence</span>   <span class="c1" style="color: #998; font-style: italic;">-- old evidence</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="2297" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2297

</td>

<td class="diff-line-num new_line" data-linenumber="2305" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2305

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<pre style="margin: 0;"> <span id="LC2305" class="line" lang="haskell">                <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcPredType</span>   <span class="c1" style="color: #998; font-style: italic;">-- new predicate</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="2298" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2298

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<td class="diff-line-num new_line" data-linenumber="2306" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2306

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<pre style="margin: 0;"> <span id="LC2306" class="line" lang="haskell">                <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcCoercion</span>   <span class="c1" style="color: #998; font-style: italic;">-- Of type :: new predicate ~ <type of old evidence></span></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="2299" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2299

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<td class="diff-line-num new_line" data-linenumber="2307" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2307

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<pre style="margin: 0;"> <span id="LC2307" class="line" lang="haskell">                <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcS</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">StopOrContinue</span> <span class="kt" style="color: #458; font-weight: 600;">CtEvidence</span><span class="p">)</span></span>

</pre>

</td>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="2331" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="2339" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -2331,7 +2339,7 @@ as well as in old_pred; that is important for good error messages.</td>

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<td class="diff-line-num old_line" data-linenumber="2331" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2331

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<td class="diff-line-num new_line" data-linenumber="2339" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2339

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<pre style="margin: 0;"> <span id="LC2339" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> -}</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="2332" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2332

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<td class="diff-line-num new_line" data-linenumber="2340" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2340

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<pre style="margin: 0;"> <span id="LC2340" class="line" lang="haskell"></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="2333" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2333

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<td class="diff-line-num new_line" data-linenumber="2341" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2341

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<pre style="margin: 0;"> <span id="LC2341" class="line" lang="haskell"></span>

</pre>

</td>

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<td class="diff-line-num old old_line" data-linenumber="2334" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

2334

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<td class="diff-line-num new_line old" data-linenumber="2342" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC2334" class="line" lang="haskell"><span class="n" style="color: #333;">rewriteEvidence</span> <span class="n" style="color: #333;">old_ev</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">CtDerived</span> <span class="p">{})</span> <span class="n" style="color: #333;">new_pred</span> <span class="n" style="color: #333;">_co</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC2342" class="line" lang="haskell"><span class="n" style="color: #333;">rewriteEvidence</span> <span class="n" style="color: #333;"><span class="idiff left">_wrw</span></span><span class="idiff right"> </span><span class="n" style="color: #333;">old_ev</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">CtDerived</span> <span class="p">{})</span> <span class="n" style="color: #333;">new_pred</span> <span class="n" style="color: #333;">_co</span></span>

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2343

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<pre style="margin: 0;"> <span id="LC2343" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="c1" style="color: #998; font-style: italic;">-- If derived, don't even look at the coercion.</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC2344" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">-- This is very important, DO NOT re-order the equations for</span></span>

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<pre style="margin: 0;"> <span id="LC2345" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">-- rewriteEvidence to put the isTcReflCo test first!</span></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="2341" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="2349" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -2341,12 +2349,13 @@ rewriteEvidence old_ev@(CtDerived {}) new_pred _co</td>

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<pre style="margin: 0;"> <span id="LC2349" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">-- (Getting this wrong caused #7384.)</span></span>

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<pre style="margin: 0;"> <span id="LC2350" class="line" lang="haskell">    <span class="n" style="color: #333;">continueWith</span> <span class="p">(</span><span class="n" style="color: #333;">old_ev</span> <span class="p">{</span> <span class="n" style="color: #333;">ctev_pred</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">new_pred</span> <span class="p">})</span></span>

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<pre style="margin: 0;"> <span id="LC2351" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;">-<span id="LC2344" class="line" lang="haskell"><span class="n" style="color: #333;">rewriteEvidence</span> <span class="n" style="color: #333;">old_ev</span> <span class="n" style="color: #333;">new_pred</span> <span class="n" style="color: #333;">co</span></span>

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<pre style="margin: 0;">+<span id="LC2352" class="line" lang="haskell"><span class="n" style="color: #333;">rewriteEvidence</span> <span class="n" style="color: #333;"><span class="idiff left">_wrw</span></span><span class="idiff right"> </span><span class="n" style="color: #333;">old_ev</span> <span class="n" style="color: #333;">new_pred</span> <span class="n" style="color: #333;">co</span></span>

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<td class="diff-line-num new_line" data-linenumber="2353" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC2353" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">isTcReflCo</span> <span class="n" style="color: #333;">co</span> <span class="c1" style="color: #998; font-style: italic;">-- See Note [Rewriting with Refl]</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC2354" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">continueWith</span> <span class="p">(</span><span class="n" style="color: #333;">old_ev</span> <span class="p">{</span> <span class="n" style="color: #333;">ctev_pred</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">new_pred</span> <span class="p">})</span></span>

</pre>

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<td class="diff-line-num new_line" data-linenumber="2355" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2355

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<pre style="margin: 0;"> <span id="LC2355" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;">-<span id="LC2348" class="line" lang="haskell"><span class="n" style="color: #333;">rewriteEvidence</span> <span class="n" style="color: #333;">ev</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">CtGiven</span> <span class="p">{</span> <span class="n" style="color: #333;">ctev_evar</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">old_evar</span><span class="p">,</span> <span class="n" style="color: #333;">ctev_loc</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">loc</span> <span class="p">})</span> <span class="n" style="color: #333;">new_pred</span> <span class="n" style="color: #333;">co</span></span>

</pre>

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<pre style="margin: 0;">-<span id="LC2349" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">new_ev</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">newGivenEvVar</span> <span class="n" style="color: #333;">loc</span> <span class="p">(</span><span class="n" style="color: #333;">new_pred</span><span class="p">,</span> <span class="n" style="color: #333;">new_tm</span><span class="p">)</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC2356" class="line" lang="haskell"><span class="n" style="color: #333;">rewriteEvidence</span> <span class="n" style="color: #333;">wrw</span> <span class="n" style="color: #333;">ev</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">CtGiven</span> <span class="p">{</span> <span class="n" style="color: #333;">ctev_evar</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">old_evar</span><span class="p">,</span> <span class="n" style="color: #333;">ctev_loc</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">loc</span> <span class="p">})</span> <span class="n" style="color: #333;">new_pred</span> <span class="n" style="color: #333;">co</span></span>

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<pre style="margin: 0;">+<span id="LC2357" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">ASSERT</span><span class="p">(</span> <span class="n" style="color: #333;">wrw</span> <span class="o" style="font-weight: 600;">==</span> <span class="kt" style="color: #458; font-weight: 600;">NoWRW</span> <span class="p">)</span>  <span class="c1" style="color: #998; font-style: italic;">-- this is a Given, not a wanted</span></span>

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<pre style="margin: 0;">+<span id="LC2358" class="line" lang="haskell">    <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">new_ev</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">newGivenEvVar</span> <span class="n" style="color: #333;">loc</span> <span class="p">(</span><span class="n" style="color: #333;">new_pred</span><span class="p">,</span> <span class="n" style="color: #333;">new_tm</span><span class="p">)</span></span>

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2350

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<pre style="margin: 0;"> <span id="LC2359" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">continueWith</span> <span class="n" style="color: #333;">new_ev</span> <span class="p">}</span></span>

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2351

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<pre style="margin: 0;"> <span id="LC2360" class="line" lang="haskell">  <span class="kr" style="font-weight: 600;">where</span></span>

</pre>

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2352

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<pre style="margin: 0;"> <span id="LC2361" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">-- mkEvCast optimises ReflCo</span></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="2354" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="2363" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -2354,11 +2363,12 @@ rewriteEvidence ev@(CtGiven { ctev_evar = old_evar, ctev_loc = loc }) new_pred c</td>

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<pre style="margin: 0;"> <span id="LC2363" class="line" lang="haskell">                                                       <span class="p">(</span><span class="n" style="color: #333;">ctEvRole</span> <span class="n" style="color: #333;">ev</span><span class="p">)</span></span>

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<td class="diff-line-num old_line" data-linenumber="2355" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC2364" class="line" lang="haskell">                                                       <span class="p">(</span><span class="n" style="color: #333;">mkTcSymCo</span> <span class="n" style="color: #333;">co</span><span class="p">))</span></span>

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2365

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<pre style="margin: 0;"> <span id="LC2365" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="2357" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<td class="diff-line-num new_line old" data-linenumber="2366" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC2357" class="line" lang="haskell"><span class="n" style="color: #333;">rewriteEvidence</span> <span class="n" style="color: #333;">ev</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">CtWanted</span> <span class="p">{</span> <span class="n" style="color: #333;">ctev_dest</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">dest</span></span>

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<td class="diff-line-num old old_line" data-linenumber="2358" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC2358" class="line" lang="haskell">                             <span class="p">,</span> <span class="n" style="color: #333;">ctev_nosh</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">si</span></span>

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<td class="diff-line-num old old_line" data-linenumber="2359" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC2359" class="line" lang="haskell">                             <span class="p">,</span> <span class="n" style="color: #333;">ctev_loc</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">loc</span></span>

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<td class="diff-line-num old old_line" data-linenumber="2360" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<td class="diff-line-num new_line old" data-linenumber="2366" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC2360" class="line" lang="haskell">                             <span class="p">,</span> <span class="n" style="color: #333;">ctev_report_as</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">report_as</span> <span class="p">})</span> <span class="n" style="color: #333;">new_pred</span> <span class="n" style="color: #333;">co</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="2361" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC2361" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">mb_new_ev</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">newWanted_SI</span> <span class="n" style="color: #333;">si</span> <span class="n" style="color: #333;">loc</span> <span class="n" style="color: #333;">report_as</span> <span class="n" style="color: #333;">new_pred</span></span>

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<td class="diff-line-num new old_line" data-linenumber="2362" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC2366" class="line" lang="haskell"><span class="n" style="color: #333;">rewriteEvidence</span> <span class="n" style="color: #333;">wrw</span> <span class="n" style="color: #333;">ev</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">CtWanted</span> <span class="p">{</span> <span class="n" style="color: #333;">ctev_pred</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">old_pred</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC2367" class="line" lang="haskell">                                 <span class="p">,</span> <span class="n" style="color: #333;">ctev_dest</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">dest</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC2368" class="line" lang="haskell">                                 <span class="p">,</span> <span class="n" style="color: #333;">ctev_nosh</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">si</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC2369" class="line" lang="haskell">                                 <span class="p">,</span> <span class="n" style="color: #333;">ctev_loc</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">loc</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC2370" class="line" lang="haskell">                                 <span class="p">,</span> <span class="n" style="color: #333;">ctev_report_as</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">report_as</span> <span class="p">})</span> <span class="n" style="color: #333;">new_pred</span> <span class="n" style="color: #333;">co</span></span>

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<pre style="margin: 0;">+<span id="LC2371" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">mb_new_ev</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">newWanted_SI</span> <span class="n" style="color: #333;">si</span> <span class="n" style="color: #333;">loc</span> <span class="n" style="color: #333;">report_as'</span> <span class="n" style="color: #333;">new_pred</span></span>

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<pre style="margin: 0;"> <span id="LC2372" class="line" lang="haskell">               <span class="c1" style="color: #998; font-style: italic;">-- The "_SI" variant ensures that we make a new Wanted</span></span>

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<pre style="margin: 0;"> <span id="LC2373" class="line" lang="haskell">               <span class="c1" style="color: #998; font-style: italic;">-- with the same shadow-info as the existing one</span></span>

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<pre style="margin: 0;"> <span id="LC2374" class="line" lang="haskell">               <span class="c1" style="color: #998; font-style: italic;">-- with the same shadow-info as the existing one (#16735)</span></span>

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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -2369,9 +2379,12 @@ rewriteEvidence ev@(CtWanted { ctev_dest = dest</td>

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<pre style="margin: 0;"> <span id="LC2379" class="line" lang="haskell">       <span class="p">;</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">mb_new_ev</span> <span class="kr" style="font-weight: 600;">of</span></span>

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<pre style="margin: 0;"> <span id="LC2380" class="line" lang="haskell">            <span class="kt" style="color: #458; font-weight: 600;">Fresh</span>  <span class="n" style="color: #333;">new_ev</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">continueWith</span> <span class="n" style="color: #333;">new_ev</span></span>

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<pre style="margin: 0;"> <span id="LC2381" class="line" lang="haskell">            <span class="kt" style="color: #458; font-weight: 600;">Cached</span> <span class="kr" style="font-weight: 600;">_</span>      <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">stopWith</span> <span class="n" style="color: #333;">ev</span> <span class="s" style="color: #d14;">"Cached wanted"</span> <span class="p">}</span></span>

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<pre style="margin: 0;">+<span id="LC2382" class="line" lang="haskell">  <span class="kr" style="font-weight: 600;">where</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC2383" class="line" lang="haskell">    <span class="n" style="color: #333;">report_as'</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">updateReportAs</span> <span class="n" style="color: #333;">wrw</span> <span class="n" style="color: #333;">old_pred</span> <span class="n" style="color: #333;">report_as</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC2384" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;"> <span id="LC2385" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num new_line old" data-linenumber="2386" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC2374" class="line" lang="haskell"><span class="n" style="color: #333;">rewriteEqEvidence</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">CtEvidence</span>         <span class="c1" style="color: #998; font-style: italic;">-- Old evidence :: olhs ~ orhs (not swapped)</span></span>

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<pre style="margin: 0;">+<span id="LC2386" class="line" lang="haskell"><span class="n" style="color: #333;">rewriteEqEvidence</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">WRWFlag</span>            <span class="c1" style="color: #998; font-style: italic;">-- YesWRW <=> a wanted rewrote a wanted</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="2387" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC2387" class="line" lang="haskell">                  <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">CtEvidence</span>         <span class="c1" style="color: #998; font-style: italic;">-- Old evidence :: olhs ~ orhs (not swapped)</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC2388" class="line" lang="haskell">                                        <span class="c1" style="color: #998; font-style: italic;">--              or orhs ~ olhs (swapped)</span></span>

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<pre style="margin: 0;"> <span id="LC2389" class="line" lang="haskell">                  <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">SwapFlag</span></span>

</pre>

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<td class="diff-line-num new_line" data-linenumber="2390" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2390

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<pre style="margin: 0;"> <span id="LC2390" class="line" lang="haskell">                  <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcType</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcType</span>   <span class="c1" style="color: #998; font-style: italic;">-- New predicate  nlhs ~ nrhs</span></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="2393" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="2406" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -2393,7 +2406,7 @@ rewriteEqEvidence :: CtEvidence         -- Old evidence :: olhs ~ orhs (not swap</td>

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<td class="diff-line-num old_line" data-linenumber="2393" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2393

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<td class="diff-line-num new_line" data-linenumber="2406" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2406

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<pre style="margin: 0;"> <span id="LC2406" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--      w : orhs ~ olhs = sym rhs_co ; sym w1 ; lhs_co</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="2394" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2394

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<td class="diff-line-num new_line" data-linenumber="2407" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2407

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<pre style="margin: 0;"> <span id="LC2407" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="2395" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2395

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<td class="diff-line-num new_line" data-linenumber="2408" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC2408" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- It's all a form of rewwriteEvidence, specialised for equalities</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="2396" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

2396

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<td class="diff-line-num new_line old" data-linenumber="2409" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC2396" class="line" lang="haskell"><span class="n" style="color: #333;">rewriteEqEvidence</span> <span class="n" style="color: #333;">old_ev</span> <span class="n" style="color: #333;">swapped</span> <span class="n" style="color: #333;">nlhs</span> <span class="n" style="color: #333;">nrhs</span> <span class="n" style="color: #333;">lhs_co</span> <span class="n" style="color: #333;">rhs_co</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="2397" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="2409" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC2409" class="line" lang="haskell"><span class="n" style="color: #333;">rewriteEqEvidence</span> <span class="n" style="color: #333;"><span class="idiff left">wrw</span></span><span class="idiff right"> </span><span class="n" style="color: #333;">old_ev</span> <span class="n" style="color: #333;">swapped</span> <span class="n" style="color: #333;">nlhs</span> <span class="n" style="color: #333;">nrhs</span> <span class="n" style="color: #333;">lhs_co</span> <span class="n" style="color: #333;">rhs_co</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="2397" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2397

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<td class="diff-line-num new_line" data-linenumber="2410" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2410

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<pre style="margin: 0;"> <span id="LC2410" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">|</span> <span class="kt" style="color: #458; font-weight: 600;">CtDerived</span> <span class="p">{}</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">old_ev</span>  <span class="c1" style="color: #998; font-style: italic;">-- Don't force the evidence for a Derived</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="2398" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2398

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<td class="diff-line-num new_line" data-linenumber="2411" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2411

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<pre style="margin: 0;"> <span id="LC2411" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">old_ev</span> <span class="p">{</span> <span class="n" style="color: #333;">ctev_pred</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">new_pred</span> <span class="p">})</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="2399" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2399

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<td class="diff-line-num new_line" data-linenumber="2412" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2412

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<pre style="margin: 0;"> <span id="LC2412" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="2408" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="2421" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -2408,10 +2421,14 @@ rewriteEqEvidence old_ev swapped nlhs nrhs lhs_co rhs_co</td>

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<td class="diff-line-num old_line" data-linenumber="2408" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2408

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<td class="diff-line-num new_line" data-linenumber="2421" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2421

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<pre style="margin: 0;"> <span id="LC2421" class="line" lang="haskell">                                  <span class="p">`</span><span class="n" style="color: #333;">mkTcTransCo</span><span class="p">`</span> <span class="n" style="color: #333;">mkTcSymCo</span> <span class="n" style="color: #333;">rhs_co</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="2409" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2409

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<td class="diff-line-num new_line" data-linenumber="2422" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2422

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<pre style="margin: 0;"> <span id="LC2422" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">newGivenEvVar</span> <span class="n" style="color: #333;">loc'</span> <span class="p">(</span><span class="n" style="color: #333;">new_pred</span><span class="p">,</span> <span class="n" style="color: #333;">new_tm</span><span class="p">)</span> <span class="p">}</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="2410" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2410

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<td class="diff-line-num new_line" data-linenumber="2423" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2423

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<pre style="margin: 0;"> <span id="LC2423" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="2411" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

2411

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<td class="diff-line-num new_line old" data-linenumber="2424" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC2411" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">|</span> <span class="kt" style="color: #458; font-weight: 600;">CtWanted</span> <span class="p">{</span> <span class="n" style="color: #333;">ctev_dest</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">dest</span><span class="p">,</span> <span class="n" style="color: #333;">ctev_nosh</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">si</span><span class="p">,</span> <span class="n" style="color: #333;">ctev_report_as</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">report_as</span> <span class="p">}</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">old_ev</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="2412" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="2424" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC2424" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">|</span> <span class="kt" style="color: #458; font-weight: 600;">CtWanted</span> <span class="p">{</span> <span class="n" style="color: #333;">ctev_pred</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">old_pred</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="2412" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="2425" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC2425" class="line" lang="haskell">             <span class="p">,</span> <span class="n" style="color: #333;">ctev_dest</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">dest</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="2412" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="2426" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC2426" class="line" lang="haskell">             <span class="p">,</span> <span class="n" style="color: #333;">ctev_nosh</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">si</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="2412" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="2427" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

2427

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<pre style="margin: 0;">+<span id="LC2427" class="line" lang="haskell">             <span class="p">,</span> <span class="n" style="color: #333;">ctev_report_as</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">report_as</span> <span class="p">}</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">old_ev</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="2412" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="2428" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

2428

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<pre style="margin: 0;">+<span id="LC2428" class="line" lang="haskell">  <span class="p">,</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">report_as'</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">updateReportAs</span> <span class="n" style="color: #333;">wrw</span> <span class="n" style="color: #333;">old_pred</span> <span class="n" style="color: #333;">report_as</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="2412" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2412

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<td class="diff-line-num new_line" data-linenumber="2429" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2429

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<pre style="margin: 0;"> <span id="LC2429" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">dest</span> <span class="kr" style="font-weight: 600;">of</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="2413" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2413

</td>

<td class="diff-line-num new_line" data-linenumber="2430" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2430

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<pre style="margin: 0;"> <span id="LC2430" class="line" lang="haskell">      <span class="kt" style="color: #458; font-weight: 600;">HoleDest</span> <span class="n" style="color: #333;">hole</span> <span class="o" style="font-weight: 600;">-></span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="2414" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

2414

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<td class="diff-line-num new_line old" data-linenumber="2431" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC2414" class="line" lang="haskell">        <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">new_ev</span><span class="p">,</span> <span class="n" style="color: #333;">hole_co</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">newWantedEq_SI</span> <span class="p">(</span><span class="n" style="color: #333;">ch_blocker</span> <span class="n" style="color: #333;">hole</span><span class="p">)</span> <span class="n" style="color: #333;">si</span> <span class="n" style="color: #333;">loc'</span> <span class="n" style="color: #333;">report_as</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="2415" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="2431" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

2431

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<pre style="margin: 0;">+<span id="LC2431" class="line" lang="haskell">        <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">new_ev</span><span class="p">,</span> <span class="n" style="color: #333;">hole_co</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">newWantedEq_SI</span> <span class="p">(</span><span class="n" style="color: #333;">ch_blocker</span> <span class="n" style="color: #333;">hole</span><span class="p">)</span> <span class="n" style="color: #333;">si</span> <span class="n" style="color: #333;">loc'</span> <span class="n" style="color: #333;">report_as<span class="idiff left right">'</span></span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="2415" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2415

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<td class="diff-line-num new_line" data-linenumber="2432" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2432

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<pre style="margin: 0;"> <span id="LC2432" class="line" lang="haskell">                                                 <span class="p">(</span><span class="n" style="color: #333;">ctEvRole</span> <span class="n" style="color: #333;">old_ev</span><span class="p">)</span> <span class="n" style="color: #333;">nlhs</span> <span class="n" style="color: #333;">nrhs</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="2416" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2416

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<td class="diff-line-num new_line" data-linenumber="2433" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2433

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<pre style="margin: 0;"> <span id="LC2433" class="line" lang="haskell">                   <span class="c1" style="color: #998; font-style: italic;">-- The "_SI" variant ensures that we make a new Wanted</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="2417" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<td class="diff-line-num new_line" data-linenumber="2434" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC2434" class="line" lang="haskell">                   <span class="c1" style="color: #998; font-style: italic;">-- with the same shadow-info as the existing one (#16735)</span></span>

</pre>

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<br>

</li>

<li id="81707f1fe21087531cefd70879aa09c2be5c1d22">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/609563362994f3a6704308a73779ac0d29c58557...e091141d11228f719a56681736d5c2d75e760407#81707f1fe21087531cefd70879aa09c2be5c1d22"><strong>compiler/GHC/Tc/Solver/Flatten.hs</strong></a>

<hr>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="4" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="4" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -4,7 +4,7 @@</td>

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<td class="diff-line-num old_line" data-linenumber="4" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

4

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<td class="diff-line-num new_line" data-linenumber="4" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC4" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="5" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

5

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<td class="diff-line-num new_line" data-linenumber="5" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

5

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<pre style="margin: 0;"> <span id="LC5" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">module</span> <span class="nn" style="color: #555;">GHC.Tc.Solver.Flatten</span><span class="p">(</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="6" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

6

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<td class="diff-line-num new_line" data-linenumber="6" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

6

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<pre style="margin: 0;"> <span id="LC6" class="line" lang="haskell">   <span class="kt" style="color: #458; font-weight: 600;">FlattenMode</span><span class="p">(</span><span class="o" style="font-weight: 600;">..</span><span class="p">),</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="7" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

7

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<td class="diff-line-num new_line old" data-linenumber="7" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC7" class="line" lang="haskell">   <span class="n" style="color: #333;">flatten</span><span class="p">,</span> <span class="n" style="color: #333;">flatten<span class="idiff left">Kind</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">flatten</span>ArgsNom</span><span class="p">,</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="8" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="7" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

7

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<pre style="margin: 0;">+<span id="LC7" class="line" lang="haskell">   <span class="n" style="color: #333;">flatten</span><span class="p">,</span> <span class="n" style="color: #333;">flattenArgsNom</span><span class="p">,</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="8" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

8

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<td class="diff-line-num new_line" data-linenumber="8" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

8

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<pre style="margin: 0;"> <span id="LC8" class="line" lang="haskell">   <span class="n" style="color: #333;">rewriteTyVar</span><span class="p">,</span> <span class="n" style="color: #333;">flattenType</span><span class="p">,</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="9" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

9

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<td class="diff-line-num new_line" data-linenumber="9" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

9

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<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC9" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;"> <span id="LC10" class="line" lang="haskell">   <span class="n" style="color: #333;">unflattenWanteds</span></span>

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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -461,7 +461,8 @@ data FlattenEnv</td>

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<pre style="margin: 0;"> <span id="LC461" class="line" lang="haskell">                      <span class="c1" style="color: #998; font-style: italic;">-- unbanged because it's bogus in rewriteTyVar</span></span>

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<pre style="margin: 0;"> <span id="LC462" class="line" lang="haskell">       <span class="p">,</span> <span class="n" style="color: #333;">fe_flavour</span> <span class="o" style="font-weight: 600;">::</span> <span class="o" style="font-weight: 600;">!</span><span class="kt" style="color: #458; font-weight: 600;">CtFlavour</span></span>

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<pre style="margin: 0;"> <span id="LC463" class="line" lang="haskell">       <span class="p">,</span> <span class="n" style="color: #333;">fe_eq_rel</span>  <span class="o" style="font-weight: 600;">::</span> <span class="o" style="font-weight: 600;">!</span><span class="kt" style="color: #458; font-weight: 600;">EqRel</span>             <span class="c1" style="color: #998; font-style: italic;">-- See Note [Flattener EqRels]</span></span>

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<pre style="margin: 0;">-<span id="LC464" class="line" lang="haskell">       <span class="p">,</span> <span class="n" style="color: #333;">fe_work</span>    <span class="o" style="font-weight: 600;">::</span> <span class="o" style="font-weight: 600;">!</span><span class="kt" style="color: #458; font-weight: 600;">FlatWorkListRef</span> <span class="p">}</span> <span class="c1" style="color: #998; font-style: italic;">-- See Note [The flattening work list]</span></span>

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<pre style="margin: 0;">+<span id="LC464" class="line" lang="haskell">       <span class="p">,</span> <span class="n" style="color: #333;">fe_work</span>    <span class="o" style="font-weight: 600;">::</span> <span class="o" style="font-weight: 600;">!</span><span class="kt" style="color: #458; font-weight: 600;">FlatWorkListRef</span>   <span class="c1" style="color: #998; font-style: italic;">-- See Note [The flattening work list]</span></span>

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<pre style="margin: 0;">+<span id="LC465" class="line" lang="haskell">       <span class="p">,</span> <span class="n" style="color: #333;">fe_wrw</span>     <span class="o" style="font-weight: 600;">::</span> <span class="o" style="font-weight: 600;">!</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">TcRef</span> <span class="kt" style="color: #458; font-weight: 600;">WRWFlag</span><span class="p">)</span> <span class="p">}</span>   <span class="c1" style="color: #998; font-style: italic;">-- See Note [Flattening wanteds]</span></span>

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<pre style="margin: 0;"> <span id="LC466" class="line" lang="haskell"></span>

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<pre style="margin: 0;"> <span id="LC467" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">data</span> <span class="kt" style="color: #458; font-weight: 600;">FlattenMode</span>  <span class="c1" style="color: #998; font-style: italic;">-- Postcondition for all three: inert wrt the type substitution</span></span>

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<pre style="margin: 0;"> <span id="LC468" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">FM_FlattenAll</span>          <span class="c1" style="color: #998; font-style: italic;">-- Postcondition: function-free</span></span>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="511" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="512" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -511,26 +512,30 @@ emitFlatWork ct = FlatM $ \env -> updTcRef (fe_work env) (ct :)</td>

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<pre style="margin: 0;"> <span id="LC512" class="line" lang="haskell"></span>

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<pre style="margin: 0;"> <span id="LC513" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- convenient wrapper when you have a CtEvidence describing</span></span>

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<pre style="margin: 0;"> <span id="LC514" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- the flattening operation</span></span>

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<pre style="margin: 0;">-<span id="LC514" class="line" lang="haskell"><span class="n" style="color: #333;">runFlattenCtEv</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">FlattenMode</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">CtEvidence</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">FlatM</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcS</span> <span class="n" style="color: #333;"><span class="idiff left right">a</span></span></span>

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<pre style="margin: 0;">+<span id="LC515" class="line" lang="haskell"><span class="n" style="color: #333;">runFlattenCtEv</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">FlattenMode</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">CtEvidence</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">FlatM</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcS</span> <span class="p"><span class="idiff left">(</span></span><span class="n" style="color: #333;"><span class="idiff">a</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">WRWFlag</span></span><span class="p"><span class="idiff right">)</span></span></span>

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<pre style="margin: 0;"> <span id="LC516" class="line" lang="haskell"><span class="n" style="color: #333;">runFlattenCtEv</span> <span class="n" style="color: #333;">mode</span> <span class="n" style="color: #333;">ev</span></span>

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<pre style="margin: 0;"> <span id="LC517" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">runFlatten</span> <span class="n" style="color: #333;">mode</span> <span class="p">(</span><span class="n" style="color: #333;">ctEvLoc</span> <span class="n" style="color: #333;">ev</span><span class="p">)</span> <span class="p">(</span><span class="n" style="color: #333;">ctEvFlavour</span> <span class="n" style="color: #333;">ev</span><span class="p">)</span> <span class="p">(</span><span class="n" style="color: #333;">ctEvEqRel</span> <span class="n" style="color: #333;">ev</span><span class="p">)</span></span>

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<pre style="margin: 0;"> <span id="LC518" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;"> <span id="LC519" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Run thing_inside (which does flattening), and put all</span></span>

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<pre style="margin: 0;"> <span id="LC520" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- the work it generates onto the main work list</span></span>

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<pre style="margin: 0;"> <span id="LC521" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See Note [The flattening work list]</span></span>

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<pre style="margin: 0;">-<span id="LC521" class="line" lang="haskell"><span class="n" style="color: #333;">runFlatten</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">FlattenMode</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">CtLoc</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">CtFlavour</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">EqRel</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">FlatM</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcS</span> <span class="n" style="color: #333;">a</span></span>

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<pre style="margin: 0;">+<span id="LC522" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Also returns whether a wanted rewrote a wanted; see Note [Flattening wanteds]</span></span>

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<pre style="margin: 0;">+<span id="LC523" class="line" lang="haskell"><span class="n" style="color: #333;">runFlatten</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">FlattenMode</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">CtLoc</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">CtFlavour</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">EqRel</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">FlatM</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcS</span> <span class="p">(</span><span class="n" style="color: #333;">a</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">WRWFlag</span><span class="p">)</span></span>

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<pre style="margin: 0;"> <span id="LC524" class="line" lang="haskell"><span class="n" style="color: #333;">runFlatten</span> <span class="n" style="color: #333;">mode</span> <span class="n" style="color: #333;">loc</span> <span class="n" style="color: #333;">flav</span> <span class="n" style="color: #333;">eq_rel</span> <span class="n" style="color: #333;">thing_inside</span></span>

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<pre style="margin: 0;"> <span id="LC525" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">flat_ref</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">newTcRef</span> <span class="kt" style="color: #458; font-weight: 600;">[]</span></span>

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<pre style="margin: 0;">+<span id="LC526" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">wrw_ref</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">newTcRef</span> <span class="kt" style="color: #458; font-weight: 600;">NoWRW</span></span>

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<pre style="margin: 0;"> <span id="LC527" class="line" lang="haskell">       <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">fmode</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">FE</span> <span class="p">{</span> <span class="n" style="color: #333;">fe_mode</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mode</span></span>

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<pre style="margin: 0;"> <span id="LC528" class="line" lang="haskell">                        <span class="p">,</span> <span class="n" style="color: #333;">fe_loc</span>  <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">bumpCtLocDepth</span> <span class="n" style="color: #333;">loc</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC529" class="line" lang="haskell">                            <span class="c1" style="color: #998; font-style: italic;">-- See Note [Flatten when discharging CFunEqCan]</span></span>

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<pre style="margin: 0;"> <span id="LC530" class="line" lang="haskell">                        <span class="p">,</span> <span class="n" style="color: #333;">fe_flavour</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">flav</span></span>

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<pre style="margin: 0;"> <span id="LC531" class="line" lang="haskell">                        <span class="p">,</span> <span class="n" style="color: #333;">fe_eq_rel</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">eq_rel</span></span>

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<pre style="margin: 0;">-<span id="LC529" class="line" lang="haskell">                        <span class="p">,</span> <span class="n" style="color: #333;">fe_work</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">flat_ref</span> <span class="p">}</span></span>

</pre>

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532

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<pre style="margin: 0;">+<span id="LC532" class="line" lang="haskell">                        <span class="p">,</span> <span class="n" style="color: #333;">fe_work</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">flat_ref</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC533" class="line" lang="haskell">                        <span class="p">,</span> <span class="n" style="color: #333;">fe_wrw</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">wrw_ref</span> <span class="p">}</span></span>

</pre>

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530

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534

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<pre style="margin: 0;"> <span id="LC534" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">res</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">runFlatM</span> <span class="n" style="color: #333;">thing_inside</span> <span class="n" style="color: #333;">fmode</span></span>

</pre>

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531

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535

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<pre style="margin: 0;"> <span id="LC535" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">new_flats</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">readTcRef</span> <span class="n" style="color: #333;">flat_ref</span></span>

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532

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536

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<pre style="margin: 0;"> <span id="LC536" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">updWorkListTcS</span> <span class="p">(</span><span class="n" style="color: #333;">add_flats</span> <span class="n" style="color: #333;">new_flats</span><span class="p">)</span></span>

</pre>

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<pre style="margin: 0;">-<span id="LC533" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="n" style="color: #333;">res</span> <span class="p">}</span></span>

</pre>

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537

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<pre style="margin: 0;">+<span id="LC537" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">wrw</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">readTcRef</span> <span class="n" style="color: #333;">wrw_ref</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="538" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

538

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<pre style="margin: 0;">+<span id="LC538" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">res</span><span class="p">,</span> <span class="n" style="color: #333;">wrw</span><span class="p">)</span> <span class="p">}</span></span>

</pre>

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534

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<td class="diff-line-num new_line" data-linenumber="539" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

539

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<pre style="margin: 0;"> <span id="LC539" class="line" lang="haskell">  <span class="kr" style="font-weight: 600;">where</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="535" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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540

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<pre style="margin: 0;"> <span id="LC540" class="line" lang="haskell">    <span class="n" style="color: #333;">add_flats</span> <span class="n" style="color: #333;">new_flats</span> <span class="n" style="color: #333;">wl</span></span>

</pre>

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<td class="diff-line-num new_line" data-linenumber="541" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

541

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<pre style="margin: 0;"> <span id="LC541" class="line" lang="haskell">      <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">wl</span> <span class="p">{</span> <span class="n" style="color: #333;">wl_funeqs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">add_funeqs</span> <span class="n" style="color: #333;">new_flats</span> <span class="p">(</span><span class="n" style="color: #333;">wl_funeqs</span> <span class="n" style="color: #333;">wl</span><span class="p">)</span> <span class="p">}</span></span>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="611" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="616" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -611,6 +616,11 @@ bumpDepth (FlatM thing_inside)</td>

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<pre style="margin: 0;"> <span id="LC616" class="line" lang="haskell">      <span class="p">{</span> <span class="kr" style="font-weight: 600;">let</span> <span class="o" style="font-weight: 600;">!</span><span class="n" style="color: #333;">env'</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">env</span> <span class="p">{</span> <span class="n" style="color: #333;">fe_loc</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">bumpCtLocDepth</span> <span class="p">(</span><span class="n" style="color: #333;">fe_loc</span> <span class="n" style="color: #333;">env</span><span class="p">)</span> <span class="p">}</span></span>

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612

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<td class="diff-line-num new_line" data-linenumber="617" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

617

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<pre style="margin: 0;"> <span id="LC617" class="line" lang="haskell">      <span class="p">;</span> <span class="n" style="color: #333;">thing_inside</span> <span class="n" style="color: #333;">env'</span> <span class="p">}</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="613" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<td class="diff-line-num new_line" data-linenumber="618" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

618

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<pre style="margin: 0;"> <span id="LC618" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="614" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="619" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC619" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See Note [Flattening wanteds]</span></span>

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<td class="diff-line-num new old_line" data-linenumber="614" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC620" class="line" lang="haskell"><span class="n" style="color: #333;">recordWRW</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">WRWFlag</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">FlatM</span> <span class="nb" style="color: #0086b3;">()</span></span>

</pre>

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621

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<pre style="margin: 0;">+<span id="LC621" class="line" lang="haskell"><span class="n" style="color: #333;">recordWRW</span> <span class="kt" style="color: #458; font-weight: 600;">YesWRW</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">FlatM</span> <span class="o" style="font-weight: 600;">$</span> <span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">env</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">writeTcRef</span> <span class="p">(</span><span class="n" style="color: #333;">fe_wrw</span> <span class="n" style="color: #333;">env</span><span class="p">)</span> <span class="kt" style="color: #458; font-weight: 600;">YesWRW</span></span>

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622

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<pre style="margin: 0;">+<span id="LC622" class="line" lang="haskell"><span class="n" style="color: #333;">recordWRW</span> <span class="kt" style="color: #458; font-weight: 600;">NoWRW</span>  <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">return</span> <span class="nb" style="color: #0086b3;">()</span></span>

</pre>

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623

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<pre style="margin: 0;">+<span id="LC623" class="line" lang="haskell"></span>

</pre>

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614

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624

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<pre style="margin: 0;"> <span id="LC624" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">{-</span></span>

</pre>

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615

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625

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<pre style="margin: 0;"> <span id="LC625" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">Note [The flattening work list]</span></span>

</pre>

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616

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626

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<pre style="margin: 0;"> <span id="LC626" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~</span></span>

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<td class="diff-line-num unfold js-unfold new_line" data-linenumber="699" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -689,6 +699,20 @@ will be essentially impossible. So, the official recommendation if a</td>

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689

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699

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<pre style="margin: 0;"> <span id="LC699" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">stack limit is hit is to disable the check entirely. Otherwise, there</span></span>

</pre>

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690

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700

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<pre style="margin: 0;"> <span id="LC700" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">will be baffling, unpredictable errors.</span></span>

</pre>

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691

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701

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<pre style="margin: 0;"> <span id="LC701" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;">+<span id="LC702" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">Note [Flattening wanteds]</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC703" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">~~~~~~~~~~~~~~~~~~~~~~~~~</span></span>

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<pre style="margin: 0;">+<span id="LC704" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">Note [Wanteds rewrite wanteds] tells us that wanteds rewriting wanteds</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="705" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC705" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">can lead to poor error messages. But we really need wanteds to rewrite</span></span>

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<td class="diff-line-num new new_line" data-linenumber="706" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC706" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">wanteds in order to saturate our equalities. So, we need to know when</span></span>

</pre>

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707

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<pre style="margin: 0;">+<span id="LC707" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">we have done this step (call it w-r-w), so that we can record an ancestor</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="708" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

708

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<pre style="margin: 0;">+<span id="LC708" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">constraint. W-r-w will happen in flattenTyVar2, deeply buried within</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="709" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC709" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">the flattener algorithm. And, when flattening a large type, we might</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="710" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

710

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<pre style="margin: 0;">+<span id="LC710" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">w-r-w several times in several different places. We thus record, in the</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="711" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

711

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<pre style="margin: 0;">+<span id="LC711" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">FlatM monad, a WRWFlag that says whether or not any w-r-w has taken place.</span></span>

</pre>

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</td>

<td class="diff-line-num new new_line" data-linenumber="712" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

712

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<pre style="margin: 0;">+<span id="LC712" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="692" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="713" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

713

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<pre style="margin: 0;">+<span id="LC713" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">Then, in all calls to the flattener, we check this result and record</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="692" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="714" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

714

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<pre style="margin: 0;">+<span id="LC714" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">the ancestor constraint if necessary. We use a mutable WRWFlag for efficiency.</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="715" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

715

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<pre style="margin: 0;">+<span id="LC715" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="692" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

692

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<td class="diff-line-num new_line" data-linenumber="716" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

716

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<pre style="margin: 0;"> <span id="LC716" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">Note [Lazy flattening]</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="693" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

693

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<td class="diff-line-num new_line" data-linenumber="717" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

717

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<pre style="margin: 0;"> <span id="LC717" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">~~~~~~~~~~~~~~~~~~~~~~</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="694" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

694

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<td class="diff-line-num new_line" data-linenumber="718" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

718

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<pre style="margin: 0;"> <span id="LC718" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">The idea of FM_Avoid mode is to flatten less aggressively.  If we have</span></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="763" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="787" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -763,17 +787,23 @@ when trying to find derived equalities arising from injectivity.</td>

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<td class="diff-line-num old_line" data-linenumber="763" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

763

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<td class="diff-line-num new_line" data-linenumber="787" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

787

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<pre style="margin: 0;"> <span id="LC787" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">-}</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="764" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

764

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<td class="diff-line-num new_line" data-linenumber="788" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

788

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<pre style="margin: 0;"> <span id="LC788" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="765" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

765

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<td class="diff-line-num new_line" data-linenumber="789" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

789

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<pre style="margin: 0;"> <span id="LC789" class="line" lang="haskell"><span class="cd">-- | See Note [Flattening].</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="766" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

766

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<td class="diff-line-num new_line old" data-linenumber="790" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC766" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- If (xi, co) <- flatten mode ev ty, then co :: xi ~r ty</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="767" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="790" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

790

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<pre style="margin: 0;">+<span id="LC790" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- If (xi, co<span class="idiff left right">, wrw</span>) <- flatten mode ev ty, then co :: xi ~r ty</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="767" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

767

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<td class="diff-line-num new_line" data-linenumber="791" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

791

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<pre style="margin: 0;"> <span id="LC791" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- where r is the role in @ev@. If @mode@ is 'FM_FlattenAll',</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="768" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

768

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<td class="diff-line-num new_line" data-linenumber="792" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

792

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<pre style="margin: 0;"> <span id="LC792" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- then 'xi' is almost function-free (Note [Almost function-free]</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="769" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

769

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<td class="diff-line-num new_line" data-linenumber="793" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

793

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<pre style="margin: 0;"> <span id="LC793" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- in GHC.Tc.Types).</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="770" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="794" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

794

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<pre style="margin: 0;">+<span id="LC794" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- wrw is True <=> a wanted rewrote a wanted.</span></span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="770" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="795" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

795

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<pre style="margin: 0;">+<span id="LC795" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See Note [Wanteds rewrite wanteds] in GHC.Tc.Types.Constraint</span></span>

</pre>

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</td>

<td class="diff-line-num new new_line" data-linenumber="796" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

796

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<pre style="margin: 0;">+<span id="LC796" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- and Note [Flattening wanteds]</span></span>

</pre>

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770

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<td class="diff-line-num new_line" data-linenumber="797" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

797

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<pre style="margin: 0;"> <span id="LC797" class="line" lang="haskell"><span class="n" style="color: #333;">flatten</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">FlattenMode</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">CtEvidence</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcType</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="771" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

771

</td>

<td class="diff-line-num new_line old" data-linenumber="798" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC771" class="line" lang="haskell">        <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcS</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Xi</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">TcCoercion</span><span class="p">)</span></span>

</pre>

</td>

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<tr class="line_holder new" id="" style="line-height: 1.6;">

<td class="diff-line-num new old_line" data-linenumber="772" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="798" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

798

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<pre style="margin: 0;">+<span id="LC798" class="line" lang="haskell">        <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcS</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Xi</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">TcCoercion</span><span class="p"><span class="idiff left">,</span></span><span class="idiff"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff right">WRWFlag</span></span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="772" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

772

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<td class="diff-line-num new_line" data-linenumber="799" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

799

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<pre style="margin: 0;"> <span id="LC799" class="line" lang="haskell"><span class="n" style="color: #333;">flatten</span> <span class="n" style="color: #333;">mode</span> <span class="n" style="color: #333;">ev</span> <span class="n" style="color: #333;">ty</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="773" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

773

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<td class="diff-line-num new_line" data-linenumber="800" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

800

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<pre style="margin: 0;"> <span id="LC800" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">traceTcS</span> <span class="s" style="color: #d14;">"flatten {"</span> <span class="p">(</span><span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">mode</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">ty</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="774" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

774

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<td class="diff-line-num new_line old" data-linenumber="801" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC774" class="line" lang="haskell">       <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">ty'</span><span class="p">,</span> <span class="n" style="color: #333;">co</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">runFlattenCtEv</span> <span class="n" style="color: #333;">mode</span> <span class="n" style="color: #333;">ev</span> <span class="p">(</span><span class="n" style="color: #333;">flatten_one</span> <span class="n" style="color: #333;">ty</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="775" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

775

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<td class="diff-line-num new_line old" data-linenumber="801" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC775" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">traceTcS</span> <span class="s" style="color: #d14;">"flatten }"</span> <span class="p">(</span><span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">ty'</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="776" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

776

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<td class="diff-line-num new_line old" data-linenumber="801" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC776" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">ty'</span><span class="p">,</span> <span class="n" style="color: #333;">co</span><span class="p">)</span> <span class="p">}</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="777" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="801" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

801

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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC801" class="line" lang="haskell">       <span class="p">;</span> <span class="p">((</span><span class="n" style="color: #333;">ty'</span><span class="p">,</span> <span class="n" style="color: #333;">co</span><span class="p">),</span> <span class="n" style="color: #333;">wrw</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">runFlattenCtEv</span> <span class="n" style="color: #333;">mode</span> <span class="n" style="color: #333;">ev</span> <span class="p">(</span><span class="n" style="color: #333;">flatten_one</span> <span class="n" style="color: #333;">ty</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="777" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="802" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

802

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<pre style="margin: 0;">+<span id="LC802" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">traceTcS</span> <span class="s" style="color: #d14;">"flatten }"</span> <span class="p">(</span><span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">ty'</span> <span class="o" style="font-weight: 600;">$$</span> <span class="n" style="color: #333;">pp_wrw</span> <span class="n" style="color: #333;">wrw</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="777" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="803" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

803

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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC803" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">ty'</span><span class="p">,</span> <span class="n" style="color: #333;">co</span><span class="p">,</span> <span class="n" style="color: #333;">wrw</span><span class="p">)</span> <span class="p">}</span></span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="777" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="804" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

804

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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC804" class="line" lang="haskell">  <span class="kr" style="font-weight: 600;">where</span></span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="777" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="805" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

805

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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC805" class="line" lang="haskell">    <span class="n" style="color: #333;">pp_wrw</span> <span class="kt" style="color: #458; font-weight: 600;">YesWRW</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"YesWRW: wanted rewrote wanted"</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="777" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="806" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

806

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<pre style="margin: 0;">+<span id="LC806" class="line" lang="haskell">    <span class="n" style="color: #333;">pp_wrw</span> <span class="kr" style="font-weight: 600;">_</span>      <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">empty</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="777" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

777

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<td class="diff-line-num new_line" data-linenumber="807" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

807

</td>

<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC807" class="line" lang="haskell"></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="778" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

778

</td>

<td class="diff-line-num new_line" data-linenumber="808" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

808

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<pre style="margin: 0;"> <span id="LC808" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Apply the inert set as an *inert generalised substitution* to</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="779" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

779

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<td class="diff-line-num new_line" data-linenumber="809" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

809

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<pre style="margin: 0;"> <span id="LC809" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- a variable, zonking along the way.</span></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="786" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="816" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -786,28 +816,16 @@ flatten mode ev ty</td>

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<td class="diff-line-num old_line" data-linenumber="786" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC816" class="line" lang="haskell"><span class="n" style="color: #333;">rewriteTyVar</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TcTyVar</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcS</span> <span class="kt" style="color: #458; font-weight: 600;">TcType</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="787" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

787

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<td class="diff-line-num new_line" data-linenumber="817" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

817

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<pre style="margin: 0;"> <span id="LC817" class="line" lang="haskell"><span class="n" style="color: #333;">rewriteTyVar</span> <span class="n" style="color: #333;">tv</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="788" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

788

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<td class="diff-line-num new_line" data-linenumber="818" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

818

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<pre style="margin: 0;"> <span id="LC818" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">traceTcS</span> <span class="s" style="color: #d14;">"rewriteTyVar {"</span> <span class="p">(</span><span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">tv</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="789" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

789

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<td class="diff-line-num new_line old" data-linenumber="819" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC789" class="line" lang="haskell">       <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;"><span class="idiff left right">ty</span></span><span class="p">,</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">runFlatten</span> <span class="kt" style="color: #458; font-weight: 600;">FM_SubstOnly</span> <span class="n" style="color: #333;">fake_loc</span> <span class="kt" style="color: #458; font-weight: 600;">Derived</span> <span class="kt" style="color: #458; font-weight: 600;">NomEq</span> <span class="o" style="font-weight: 600;">$</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="790" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

790

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<td class="diff-line-num new_line old" data-linenumber="819" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC790" class="line" lang="haskell">                    <span class="n" style="color: #333;">flattenTyVar</span> <span class="n" style="color: #333;">tv</span></span>

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<td class="diff-line-num new old_line" data-linenumber="791" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="819" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

819

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<pre style="margin: 0;">+<span id="LC819" class="line" lang="haskell">       <span class="p">;</span> <span class="p">(<span class="idiff left">(</span></span><span class="n" style="color: #333;"><span class="idiff">ty</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="kr" style="font-weight: 600;"><span class="idiff">_</span></span><span class="p"><span class="idiff right">)</span>,</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">runFlatten</span> <span class="kt" style="color: #458; font-weight: 600;">FM_SubstOnly</span> <span class="n" style="color: #333;">fake_loc</span> <span class="kt" style="color: #458; font-weight: 600;">Derived</span> <span class="kt" style="color: #458; font-weight: 600;">NomEq</span> <span class="o" style="font-weight: 600;">$</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="791" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="820" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

820

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<pre style="margin: 0;">+<span id="LC820" class="line" lang="haskell">                    <span class="idiff left right">     </span><span class="n" style="color: #333;">flattenTyVar</span> <span class="n" style="color: #333;">tv</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="791" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

791

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<td class="diff-line-num new_line" data-linenumber="821" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

821

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<pre style="margin: 0;"> <span id="LC821" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">traceTcS</span> <span class="s" style="color: #d14;">"rewriteTyVar }"</span> <span class="p">(</span><span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">ty</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="792" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

792

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<td class="diff-line-num new_line" data-linenumber="822" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

822

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<pre style="margin: 0;"> <span id="LC822" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="n" style="color: #333;">ty</span> <span class="p">}</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="793" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

793

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<td class="diff-line-num new_line" data-linenumber="823" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

823

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<pre style="margin: 0;"> <span id="LC823" class="line" lang="haskell">  <span class="kr" style="font-weight: 600;">where</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="794" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

794

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<td class="diff-line-num new_line" data-linenumber="824" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

824

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<pre style="margin: 0;"> <span id="LC824" class="line" lang="haskell">    <span class="n" style="color: #333;">fake_loc</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">pprPanic</span> <span class="s" style="color: #d14;">"rewriteTyVar used a CtLoc"</span> <span class="p">(</span><span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">tv</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="795" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

795

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<td class="diff-line-num new_line" data-linenumber="825" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

825

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<pre style="margin: 0;"> <span id="LC825" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="796" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

796

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<td class="diff-line-num new_line old" data-linenumber="826" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC796" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- specialized to flattening kinds: never Derived, always Nominal</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="797" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

797

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<td class="diff-line-num new_line old" data-linenumber="826" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC797" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See Note [No derived kind equalities]</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="798" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

798

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<td class="diff-line-num new_line" data-linenumber="826" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

826

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<pre style="margin: 0;"> <span id="LC826" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See Note [Flattening]</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="799" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

799

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<td class="diff-line-num new_line old" data-linenumber="827" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC799" class="line" lang="haskell"><span class="n" style="color: #333;">flattenKind</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">CtLoc</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">CtFlavour</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcType</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcS</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Xi</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">TcCoercionN</span><span class="p">)</span></span>

</pre>

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800

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<td class="diff-line-num new_line old" data-linenumber="827" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC800" class="line" lang="haskell"><span class="n" style="color: #333;">flattenKind</span> <span class="n" style="color: #333;">loc</span> <span class="n" style="color: #333;">flav</span> <span class="n" style="color: #333;">ty</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="801" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

801

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<td class="diff-line-num new_line old" data-linenumber="827" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC801" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">traceTcS</span> <span class="s" style="color: #d14;">"flattenKind {"</span> <span class="p">(</span><span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">flav</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">ty</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="802" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

802

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<td class="diff-line-num new_line old" data-linenumber="827" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC802" class="line" lang="haskell">       <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">flav'</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">flav</span> <span class="kr" style="font-weight: 600;">of</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="803" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

803

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<td class="diff-line-num new_line old" data-linenumber="827" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC803" class="line" lang="haskell">                       <span class="kt" style="color: #458; font-weight: 600;">Derived</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Wanted</span> <span class="kt" style="color: #458; font-weight: 600;">WDeriv</span>  <span class="c1" style="color: #998; font-style: italic;">-- the WDeriv/WOnly choice matters not</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="804" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

804

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<td class="diff-line-num new_line old" data-linenumber="827" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC804" class="line" lang="haskell">                       <span class="kr" style="font-weight: 600;">_</span>       <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">flav</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="805" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

805

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<td class="diff-line-num new_line old" data-linenumber="827" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC805" class="line" lang="haskell">       <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">ty'</span><span class="p">,</span> <span class="n" style="color: #333;">co</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">runFlatten</span> <span class="kt" style="color: #458; font-weight: 600;">FM_FlattenAll</span> <span class="n" style="color: #333;">loc</span> <span class="n" style="color: #333;">flav'</span> <span class="kt" style="color: #458; font-weight: 600;">NomEq</span> <span class="p">(</span><span class="n" style="color: #333;">flatten_one</span> <span class="n" style="color: #333;">ty</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="806" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

806

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<td class="diff-line-num new_line old" data-linenumber="827" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC806" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">traceTcS</span> <span class="s" style="color: #d14;">"flattenKind }"</span> <span class="p">(</span><span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">ty'</span> <span class="o" style="font-weight: 600;">$$</span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">co</span><span class="p">)</span> <span class="c1" style="color: #998; font-style: italic;">-- co is never a panic</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="807" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

807

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<td class="diff-line-num new_line old" data-linenumber="827" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC807" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">ty'</span><span class="p">,</span> <span class="n" style="color: #333;">co</span><span class="p">)</span> <span class="p">}</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="808" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

808

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<td class="diff-line-num new_line old" data-linenumber="827" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC808" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="809" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

809

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<td class="diff-line-num new_line old" data-linenumber="827" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC809" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See Note [Flattening]</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="810" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

810

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<td class="diff-line-num new_line old" data-linenumber="827" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC810" class="line" lang="haskell"><span class="n" style="color: #333;">flattenArgsNom</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">CtEvidence</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyCon</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">TcType</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcS</span> <span class="p">([</span><span class="kt" style="color: #458; font-weight: 600;">Xi</span><span class="p">],</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">TcCoercion</span><span class="p">],</span> <span class="kt" style="color: #458; font-weight: 600;">TcCoercionN</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="811" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="827" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

827

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<pre style="margin: 0;">+<span id="LC827" class="line" lang="haskell"><span class="n" style="color: #333;">flattenArgsNom</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">CtEvidence</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyCon</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">TcType</span><span class="p">]</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="811" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="828" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

828

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<pre style="margin: 0;">+<span id="LC828" class="line" lang="haskell">               <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcS</span> <span class="p">([</span><span class="kt" style="color: #458; font-weight: 600;">Xi</span><span class="p">],</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">TcCoercion</span><span class="p">],</span> <span class="kt" style="color: #458; font-weight: 600;">TcCoercionN</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">WRWFlag</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="811" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

811

</td>

<td class="diff-line-num new_line" data-linenumber="829" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

829

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<pre style="margin: 0;"> <span id="LC829" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Externally-callable, hence runFlatten</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="812" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

812

</td>

<td class="diff-line-num new_line" data-linenumber="830" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

830

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<pre style="margin: 0;"> <span id="LC830" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Flatten a vector of types all at once; in fact they are</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="813" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

813

</td>

<td class="diff-line-num new_line" data-linenumber="831" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

831

</td>

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<pre style="margin: 0;"> <span id="LC831" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- always the arguments of type family or class, so</span></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="818" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="836" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -818,12 +836,15 @@ flattenArgsNom :: CtEvidence -> TyCon -> [TcType] -> TcS ([Xi], [TcCoercion], Tc</td>

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<td class="diff-line-num old_line" data-linenumber="818" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

818

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836

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<pre style="margin: 0;"> <span id="LC836" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="819" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

819

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<td class="diff-line-num new_line" data-linenumber="837" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

837

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<pre style="margin: 0;"> <span id="LC837" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- For Derived constraints the returned coercion may be undefined</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="820" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

820

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<td class="diff-line-num new_line" data-linenumber="838" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

838

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<pre style="margin: 0;"> <span id="LC838" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- because flattening may use a Derived equality ([D] a ~ ty)</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="821" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="839" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

839

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<pre style="margin: 0;">+<span id="LC839" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="821" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="840" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

840

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<pre style="margin: 0;">+<span id="LC840" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Final Bool returned says whether a wanted rewrote a wanted</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="821" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="841" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

841

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<pre style="margin: 0;">+<span id="LC841" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See Note [Flattening wanteds]</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="821" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

821

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<td class="diff-line-num new_line" data-linenumber="842" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

842

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<pre style="margin: 0;"> <span id="LC842" class="line" lang="haskell"><span class="n" style="color: #333;">flattenArgsNom</span> <span class="n" style="color: #333;">ev</span> <span class="n" style="color: #333;">tc</span> <span class="n" style="color: #333;">tys</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="822" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

822

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<td class="diff-line-num new_line" data-linenumber="843" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

843

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<pre style="margin: 0;"> <span id="LC843" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">traceTcS</span> <span class="s" style="color: #d14;">"flatten_args {"</span> <span class="p">(</span><span class="n" style="color: #333;">vcat</span> <span class="p">(</span><span class="n" style="color: #333;">map</span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">tys</span><span class="p">))</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="823" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

823

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<td class="diff-line-num new_line old" data-linenumber="844" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC823" class="line" lang="haskell">       <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;"><span class="idiff left">tys'</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">cos</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">kind_co</span></span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="824" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="844" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

844

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<pre style="margin: 0;">+<span id="LC844" class="line" lang="haskell">       <span class="p">;</span> <span class="p">(<span class="idiff left">(</span></span><span class="n" style="color: #333;"><span class="idiff">tys'</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">cos</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">kind_co</span></span><span class="p"><span class="idiff">),</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">wrw</span></span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="824" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

824

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<td class="diff-line-num new_line" data-linenumber="845" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

845

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<pre style="margin: 0;"> <span id="LC845" class="line" lang="haskell">           <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">runFlattenCtEv</span> <span class="kt" style="color: #458; font-weight: 600;">FM_FlattenAll</span> <span class="n" style="color: #333;">ev</span> <span class="p">(</span><span class="n" style="color: #333;">flatten_args_tc</span> <span class="n" style="color: #333;">tc</span> <span class="p">(</span><span class="n" style="color: #333;">repeat</span> <span class="kt" style="color: #458; font-weight: 600;">Nominal</span><span class="p">)</span> <span class="n" style="color: #333;">tys</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="825" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

825

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<td class="diff-line-num new_line" data-linenumber="846" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

846

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<pre style="margin: 0;"> <span id="LC846" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">traceTcS</span> <span class="s" style="color: #d14;">"flatten }"</span> <span class="p">(</span><span class="n" style="color: #333;">vcat</span> <span class="p">(</span><span class="n" style="color: #333;">map</span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">tys'</span><span class="p">))</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="826" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

826

</td>

<td class="diff-line-num new_line old" data-linenumber="847" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC826" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">tys'</span><span class="p">,</span> <span class="n" style="color: #333;">cos</span><span class="p">,</span> <span class="n" style="color: #333;">kind_co</span><span class="p">)</span> <span class="p">}</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="827" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="847" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

847

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<pre style="margin: 0;">+<span id="LC847" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">tys'</span><span class="p">,</span> <span class="n" style="color: #333;">cos</span><span class="p">,</span> <span class="n" style="color: #333;">kind_co</span><span class="p"><span class="idiff left">,</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">wrw</span></span><span class="p">)</span> <span class="p">}</span></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="827" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

827

</td>

<td class="diff-line-num new_line" data-linenumber="848" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

848

</td>

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<pre style="margin: 0;"> <span id="LC848" class="line" lang="haskell"></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="828" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

828

</td>

<td class="diff-line-num new_line" data-linenumber="849" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

849

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<pre style="margin: 0;"> <span id="LC849" class="line" lang="haskell"><span class="cd">-- | Flatten a type w.r.t. nominal equality. This is useful to rewrite</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="829" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

829

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<td class="diff-line-num new_line" data-linenumber="850" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

850

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<pre style="margin: 0;"> <span id="LC850" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- a type w.r.t. any givens. It does not do type-family reduction. This</span></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="832" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="853" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -832,8 +853,8 @@ flattenArgsNom ev tc tys</td>

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<td class="diff-line-num old_line" data-linenumber="832" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

832

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<td class="diff-line-num new_line" data-linenumber="853" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

853

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<pre style="margin: 0;"> <span id="LC853" class="line" lang="haskell"><span class="n" style="color: #333;">flattenType</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">CtLoc</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcType</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcS</span> <span class="kt" style="color: #458; font-weight: 600;">TcType</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="833" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

833

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<td class="diff-line-num new_line" data-linenumber="854" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

854

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<pre style="margin: 0;"> <span id="LC854" class="line" lang="haskell"><span class="n" style="color: #333;">flattenType</span> <span class="n" style="color: #333;">loc</span> <span class="n" style="color: #333;">ty</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="834" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

834

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<td class="diff-line-num new_line" data-linenumber="855" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

855

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<pre style="margin: 0;"> <span id="LC855" class="line" lang="haskell">          <span class="c1" style="color: #998; font-style: italic;">-- More info about FM_SubstOnly in Note [Holes] in GHC.Tc.Types.Constraint</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="835" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

835

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<td class="diff-line-num new_line old" data-linenumber="856" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC835" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;"><span class="idiff left right">xi</span></span><span class="p">,</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">runFlatten</span> <span class="kt" style="color: #458; font-weight: 600;">FM_SubstOnly</span> <span class="n" style="color: #333;">loc</span> <span class="kt" style="color: #458; font-weight: 600;">Given</span> <span class="kt" style="color: #458; font-weight: 600;">NomEq</span> <span class="o" style="font-weight: 600;">$</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="836" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

836

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<td class="diff-line-num new_line old" data-linenumber="856" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC836" class="line" lang="haskell">                    <span class="n" style="color: #333;">flatten_one</span> <span class="n" style="color: #333;">ty</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="837" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="856" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

856

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<pre style="margin: 0;">+<span id="LC856" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(<span class="idiff left">(</span></span><span class="n" style="color: #333;"><span class="idiff">xi</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="kr" style="font-weight: 600;"><span class="idiff">_</span></span><span class="p"><span class="idiff right">)</span>,</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">runFlatten</span> <span class="kt" style="color: #458; font-weight: 600;">FM_SubstOnly</span> <span class="n" style="color: #333;">loc</span> <span class="kt" style="color: #458; font-weight: 600;">Given</span> <span class="kt" style="color: #458; font-weight: 600;">NomEq</span> <span class="o" style="font-weight: 600;">$</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="837" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="857" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

857

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<pre style="margin: 0;">+<span id="LC857" class="line" lang="haskell">                    <span class="idiff left right">     </span><span class="n" style="color: #333;">flatten_one</span> <span class="n" style="color: #333;">ty</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="837" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

837

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<td class="diff-line-num new_line" data-linenumber="858" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

858

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<pre style="margin: 0;"> <span id="LC858" class="line" lang="haskell">                     <span class="c1" style="color: #998; font-style: italic;">-- use Given flavor so that it is rewritten</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="838" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

838

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<td class="diff-line-num new_line" data-linenumber="859" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

859

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<pre style="margin: 0;"> <span id="LC859" class="line" lang="haskell">                     <span class="c1" style="color: #998; font-style: italic;">-- only w.r.t. Givens, never Wanteds/Deriveds</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="839" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

839

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<td class="diff-line-num new_line" data-linenumber="860" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

860

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<pre style="margin: 0;"> <span id="LC860" class="line" lang="haskell">                     <span class="c1" style="color: #998; font-style: italic;">-- (Shouldn't matter, if only Givens are present</span></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="1384" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="1405" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1384,7 +1405,7 @@ flatten_fam_app tc tys  -- Can be over-saturated</td>

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<td class="diff-line-num old_line" data-linenumber="1384" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1384

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<td class="diff-line-num new_line" data-linenumber="1405" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1405

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<pre style="margin: 0;"> <span id="LC1405" class="line" lang="haskell">         <span class="p">;</span> <span class="n" style="color: #333;">flatten_app_ty_args</span> <span class="n" style="color: #333;">xi1</span> <span class="n" style="color: #333;">co1</span> <span class="n" style="color: #333;">tys_rest</span> <span class="p">}</span> <span class="p">}</span> <span class="p">}</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1385" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1385

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<td class="diff-line-num new_line" data-linenumber="1406" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1406

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<pre style="margin: 0;"> <span id="LC1406" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1386" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1386

</td>

<td class="diff-line-num new_line" data-linenumber="1407" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1407

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<pre style="margin: 0;"> <span id="LC1407" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- the [TcType] exactly saturate the TyCon</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="1387" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

1387

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<td class="diff-line-num new_line old" data-linenumber="1408" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC1387" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See <span class="idiff left right">N</span>ote [flatten_exact_fam_app_fully performance]</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="1388" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="1408" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1408

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<pre style="margin: 0;">+<span id="LC1408" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See <span class="idiff left right">n</span>ote [flatten_exact_fam_app_fully performance]</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1388" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1388

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1409

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<pre style="margin: 0;"> <span id="LC1409" class="line" lang="haskell"><span class="n" style="color: #333;">flatten_exact_fam_app_fully</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TyCon</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">TcType</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">FlatM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Xi</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Coercion</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1389" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1389

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<td class="diff-line-num new_line" data-linenumber="1410" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1410

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<pre style="margin: 0;"> <span id="LC1410" class="line" lang="haskell"><span class="n" style="color: #333;">flatten_exact_fam_app_fully</span> <span class="n" style="color: #333;">tc</span> <span class="n" style="color: #333;">tys</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1390" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1390

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<td class="diff-line-num new_line" data-linenumber="1411" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1411

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<pre style="margin: 0;"> <span id="LC1411" class="line" lang="haskell">  <span class="c1" style="color: #998; font-style: italic;">-- See Note [Reduce type family applications eagerly]</span></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="1440" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="1461" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1440,7 +1461,7 @@ flatten_exact_fam_app_fully tc tys</td>

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<td class="diff-line-num old_line" data-linenumber="1440" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1440

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<td class="diff-line-num new_line" data-linenumber="1461" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1461

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<pre style="margin: 0;"> <span id="LC1461" class="line" lang="haskell">                               <span class="kt" style="color: #458; font-weight: 600;">Nothing</span> <span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">do</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1441" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1441

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<td class="diff-line-num new_line" data-linenumber="1462" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1462

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<pre style="margin: 0;"> <span id="LC1462" class="line" lang="haskell">                                 <span class="p">{</span> <span class="n" style="color: #333;">loc</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">getLoc</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1442" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1442

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<td class="diff-line-num new_line" data-linenumber="1463" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1463

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<pre style="margin: 0;"> <span id="LC1463" class="line" lang="haskell">                                 <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">ev</span><span class="p">,</span> <span class="n" style="color: #333;">co</span><span class="p">,</span> <span class="n" style="color: #333;">fsk</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">liftTcS</span> <span class="o" style="font-weight: 600;">$</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="1443" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

1443

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<td class="diff-line-num new_line old" data-linenumber="1464" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC1443" class="line" lang="haskell">                                     <span class="n" style="color: #333;">newFlattenSkolem</span> <span class="n" style="color: #333;">cur_flav</span> <span class="n" style="color: #333;">loc</span> <span class="n" style="color: #333;">tc</span> <span class="n" style="color: #333;">xis</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="1444" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC1464" class="line" lang="haskell">                                     <span class="n" style="color: #333;">newFlattenSkolem</span> <span class="n" style="color: #333;">cur_flav</span> <span class="n" style="color: #333;">loc</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left">CtReportAsSame</span></span><span class="idiff right"> </span><span class="n" style="color: #333;">tc</span> <span class="n" style="color: #333;">xis</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1444" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1444

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<td class="diff-line-num new_line" data-linenumber="1465" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1465

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<pre style="margin: 0;"> <span id="LC1465" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1445" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1445

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1466

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<pre style="margin: 0;"> <span id="LC1466" class="line" lang="haskell">                                 <span class="c1" style="color: #998; font-style: italic;">-- The new constraint (F xis ~ fsk) is not</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1446" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1446

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<td class="diff-line-num new_line" data-linenumber="1467" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1467

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<pre style="margin: 0;"> <span id="LC1467" class="line" lang="haskell">                                 <span class="c1" style="color: #998; font-style: italic;">-- necessarily inert (e.g. the LHS may be a</span></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="1634" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="1655" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1634,24 +1655,26 @@ flatten_tyvar2 tv fr@(_, eq_rel)</td>

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<td class="diff-line-num old_line" data-linenumber="1634" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1634

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1655

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<pre style="margin: 0;"> <span id="LC1655" class="line" lang="haskell">                        <span class="p">,</span> <span class="n" style="color: #333;">cc_rhs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">rhs_ty</span><span class="p">,</span> <span class="n" style="color: #333;">cc_eq_rel</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ct_eq_rel</span> <span class="p">}</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">ct</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1635" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1635

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<td class="diff-line-num new_line" data-linenumber="1656" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1656

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<pre style="margin: 0;"> <span id="LC1656" class="line" lang="haskell">             <span class="p">,</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">ct_fr</span> <span class="o" style="font-weight: 600;">=</span> <span class="p">(</span><span class="n" style="color: #333;">ctEvFlavour</span> <span class="n" style="color: #333;">ctev</span><span class="p">,</span> <span class="n" style="color: #333;">ct_eq_rel</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1636" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1636

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<td class="diff-line-num new_line" data-linenumber="1657" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1657

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<pre style="margin: 0;"> <span id="LC1657" class="line" lang="haskell">             <span class="p">,</span> <span class="n" style="color: #333;">ct_fr</span> <span class="p">`</span><span class="n" style="color: #333;">eqCanRewriteFR</span><span class="p">`</span> <span class="n" style="color: #333;">fr</span>  <span class="c1" style="color: #998; font-style: italic;">-- This is THE key call of eqCanRewriteFR</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="1637" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

1637

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<td class="diff-line-num new_line old" data-linenumber="1658" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC1637" class="line" lang="haskell">             <span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">traceFlat</span> <span class="s" style="color: #d14;">"Following inert tyvar"</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="1638" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

1638

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<td class="diff-line-num new_line old" data-linenumber="1658" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC1638" class="line" lang="haskell">                        <span class="p">(</span><span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">mode</span> <span class="o" style="font-weight: 600;"><+></span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="1639" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

1639

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<td class="diff-line-num new_line old" data-linenumber="1658" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC1639" class="line" lang="haskell">                         <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">tv</span> <span class="o" style="font-weight: 600;"><+></span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="1640" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

1640

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<td class="diff-line-num new_line old" data-linenumber="1658" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC1640" class="line" lang="haskell">                         <span class="n" style="color: #333;">equals</span> <span class="o" style="font-weight: 600;"><+></span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="1641" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

1641

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<td class="diff-line-num new_line old" data-linenumber="1658" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC1641" class="line" lang="haskell">                         <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">rhs_ty</span> <span class="o" style="font-weight: 600;">$$</span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">ctev</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="1642" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

1642

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<pre style="margin: 0;">-<span id="LC1642" class="line" lang="haskell">                    <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">rewrite_co1</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mkSymCo</span> <span class="p">(</span><span class="n" style="color: #333;">ctEvCoercion</span> <span class="n" style="color: #333;">ctev</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="1643" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

1643

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<td class="diff-line-num new_line old" data-linenumber="1658" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC1643" class="line" lang="haskell">                          <span class="n" style="color: #333;">rewrite_co</span>  <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">case</span> <span class="p">(</span><span class="n" style="color: #333;">ct_eq_rel</span><span class="p">,</span> <span class="n" style="color: #333;">eq_rel</span><span class="p">)</span> <span class="kr" style="font-weight: 600;">of</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="1644" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

1644

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<td class="diff-line-num new_line old" data-linenumber="1658" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC1644" class="line" lang="haskell">                            <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">ReprEq</span><span class="p">,</span> <span class="n" style="color: #333;">_rel</span><span class="p">)</span>  <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">ASSERT</span><span class="p">(</span> <span class="n" style="color: #333;">_rel</span> <span class="o" style="font-weight: 600;">==</span> <span class="kt" style="color: #458; font-weight: 600;">ReprEq</span> <span class="p">)</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="1645" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

1645

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<pre style="margin: 0;">-<span id="LC1645" class="line" lang="haskell">                                    <span class="c1" style="color: #998; font-style: italic;">-- if this ASSERT fails, then</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="1646" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

1646

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<pre style="margin: 0;">-<span id="LC1646" class="line" lang="haskell">                                    <span class="c1" style="color: #998; font-style: italic;">-- eqCanRewriteFR answered incorrectly</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="1647" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

1647

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<pre style="margin: 0;">-<span id="LC1647" class="line" lang="haskell">                                               <span class="n" style="color: #333;">rewrite_co1</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="1648" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

1648

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<td class="diff-line-num new_line old" data-linenumber="1658" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC1648" class="line" lang="haskell">                            <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">NomEq</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">NomEq</span><span class="p">)</span>  <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">rewrite_co1</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="1649" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

1649

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<td class="diff-line-num new_line old" data-linenumber="1658" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC1649" class="line" lang="haskell">                            <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">NomEq</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">ReprEq</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">mkSubCo</span> <span class="n" style="color: #333;">rewrite_co1</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="1650" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

1650

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<td class="diff-line-num new_line old" data-linenumber="1658" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC1650" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="1651" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

1651

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<td class="diff-line-num new_line old" data-linenumber="1658" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC1651" class="line" lang="haskell">                    <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">FTRFollowed</span> <span class="n" style="color: #333;">rhs_ty</span> <span class="n" style="color: #333;">rewrite_co</span><span class="p">)</span> <span class="p">}</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="1652" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

1652

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<td class="diff-line-num new_line old" data-linenumber="1658" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC1652" class="line" lang="haskell">                    <span class="c1" style="color: #998; font-style: italic;">-- NB: ct is Derived then fmode must be also, hence</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="1653" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

1653

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<td class="diff-line-num new_line old" data-linenumber="1658" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC1653" class="line" lang="haskell">                    <span class="c1" style="color: #998; font-style: italic;">-- we are not going to touch the returned coercion</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="1654" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

1654

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<td class="diff-line-num new_line old" data-linenumber="1658" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC1654" class="line" lang="haskell">                    <span class="c1" style="color: #998; font-style: italic;">-- so ctEvCoercion is fine.</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="1655" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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1658

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<pre style="margin: 0;">+<span id="LC1658" class="line" lang="haskell">             <span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">wrw</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ct_fr</span> <span class="p">`</span><span class="n" style="color: #333;">wantedRewriteWanted</span><span class="p">`</span> <span class="n" style="color: #333;">fr</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="1659" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1659

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<pre style="margin: 0;">+<span id="LC1659" class="line" lang="haskell">                   <span class="p">;</span> <span class="n" style="color: #333;">traceFlat</span> <span class="s" style="color: #d14;">"Following inert tyvar"</span> <span class="o" style="font-weight: 600;">$</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="1660" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1660

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<pre style="margin: 0;">+<span id="LC1660" class="line" lang="haskell">                     <span class="n" style="color: #333;">vcat</span> <span class="p">[</span> <span class="n" style="color: #333;">sep</span> <span class="p">[</span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">mode</span><span class="p">,</span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">tv</span><span class="p">,</span> <span class="n" style="color: #333;">equals</span><span class="p">,</span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">rhs_ty</span><span class="p">]</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="1661" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1661

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<pre style="margin: 0;">+<span id="LC1661" class="line" lang="haskell">                          <span class="p">,</span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">ctev</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="1662" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1662

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<pre style="margin: 0;">+<span id="LC1662" class="line" lang="haskell">                          <span class="p">,</span> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"wanted_rewrite_wanted:"</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">wrw</span> <span class="p">]</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="1663" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1663

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<pre style="margin: 0;">+<span id="LC1663" class="line" lang="haskell">                   <span class="p">;</span> <span class="n" style="color: #333;">recordWRW</span> <span class="n" style="color: #333;">wrw</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="1664" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1664

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<pre style="margin: 0;">+<span id="LC1664" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="1665" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1665

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<pre style="margin: 0;">+<span id="LC1665" class="line" lang="haskell">                   <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">rewrite_co1</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mkSymCo</span> <span class="p">(</span><span class="n" style="color: #333;">ctEvCoercion</span> <span class="n" style="color: #333;">ctev</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="1666" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1666

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<pre style="margin: 0;">+<span id="LC1666" class="line" lang="haskell">                         <span class="n" style="color: #333;">rewrite_co</span>  <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">case</span> <span class="p">(</span><span class="n" style="color: #333;">ct_eq_rel</span><span class="p">,</span> <span class="n" style="color: #333;">eq_rel</span><span class="p">)</span> <span class="kr" style="font-weight: 600;">of</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="1655" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="1667" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1667

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<pre style="margin: 0;">+<span id="LC1667" class="line" lang="haskell">                           <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">ReprEq</span><span class="p">,</span> <span class="n" style="color: #333;">_rel</span><span class="p">)</span>  <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">ASSERT</span><span class="p">(</span> <span class="n" style="color: #333;">_rel</span> <span class="o" style="font-weight: 600;">==</span> <span class="kt" style="color: #458; font-weight: 600;">ReprEq</span> <span class="p">)</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="1655" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="1668" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1668

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<pre style="margin: 0;">+<span id="LC1668" class="line" lang="haskell">                                   <span class="c1" style="color: #998; font-style: italic;">-- if this ASSERT fails, then</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="1669" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1669

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<pre style="margin: 0;">+<span id="LC1669" class="line" lang="haskell">                                   <span class="c1" style="color: #998; font-style: italic;">-- eqCanRewriteFR answered incorrectly</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="1670" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1670

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<pre style="margin: 0;">+<span id="LC1670" class="line" lang="haskell">                                              <span class="n" style="color: #333;">rewrite_co1</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="1671" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1671

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<pre style="margin: 0;">+<span id="LC1671" class="line" lang="haskell">                           <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">NomEq</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">NomEq</span><span class="p">)</span>  <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">rewrite_co1</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="1672" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1672

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<pre style="margin: 0;">+<span id="LC1672" class="line" lang="haskell">                           <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">NomEq</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">ReprEq</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">mkSubCo</span> <span class="n" style="color: #333;">rewrite_co1</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="1673" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1673

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<pre style="margin: 0;">+<span id="LC1673" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="1655" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="1674" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1674

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<pre style="margin: 0;">+<span id="LC1674" class="line" lang="haskell">                   <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">FTRFollowed</span> <span class="n" style="color: #333;">rhs_ty</span> <span class="n" style="color: #333;">rewrite_co</span><span class="p">)</span> <span class="p">}</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="1675" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1675

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<pre style="margin: 0;">+<span id="LC1675" class="line" lang="haskell">                   <span class="c1" style="color: #998; font-style: italic;">-- NB: ct is Derived then fmode must be also, hence</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="1655" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="1676" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1676

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<pre style="margin: 0;">+<span id="LC1676" class="line" lang="haskell">                   <span class="c1" style="color: #998; font-style: italic;">-- we are not going to touch the returned coercion</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="1655" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="1677" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1677

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<pre style="margin: 0;">+<span id="LC1677" class="line" lang="haskell">                   <span class="c1" style="color: #998; font-style: italic;">-- so ctEvCoercion is fine.</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1655" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1655

</td>

<td class="diff-line-num new_line" data-linenumber="1678" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1678

</td>

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<pre style="margin: 0;"> <span id="LC1678" class="line" lang="haskell"></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="1656" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1656

</td>

<td class="diff-line-num new_line" data-linenumber="1679" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1679

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<pre style="margin: 0;"> <span id="LC1679" class="line" lang="haskell">           <span class="n" style="color: #333;">_other</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">return</span> <span class="kt" style="color: #458; font-weight: 600;">FTRNotFollowed</span> <span class="p">}</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1657" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1657

</td>

<td class="diff-line-num new_line" data-linenumber="1680" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1680

</td>

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<pre style="margin: 0;"> <span id="LC1680" class="line" lang="haskell"></span>

</pre>

</td>

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</table>

<br>

</li>

<li id="f639b0b31b7245cb7d34ac190b798f5ec1c7da2e">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/609563362994f3a6704308a73779ac0d29c58557...e091141d11228f719a56681736d5c2d75e760407#f639b0b31b7245cb7d34ac190b798f5ec1c7da2e"><strong>compiler/GHC/Tc/Solver/Interact.hs</strong></a>

<hr>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="1985" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="1985" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1985,7 +1985,7 @@ reduce_top_fun_eq old_ev fsk (ax_co, rhs_ty)</td>

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<td class="diff-line-num old_line" data-linenumber="1985" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1985

</td>

<td class="diff-line-num new_line" data-linenumber="1985" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1985

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<pre style="margin: 0;"> <span id="LC1985" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">ASSERT2</span><span class="p">(</span> <span class="n" style="color: #333;">not</span> <span class="p">(</span><span class="n" style="color: #333;">fsk</span> <span class="p">`</span><span class="n" style="color: #333;">elemVarSet</span><span class="p">`</span> <span class="n" style="color: #333;">tyCoVarsOfType</span> <span class="n" style="color: #333;">rhs_ty</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1986" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1986

</td>

<td class="diff-line-num new_line" data-linenumber="1986" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1986

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<pre style="margin: 0;"> <span id="LC1986" class="line" lang="haskell">           <span class="p">,</span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">old_ev</span> <span class="o" style="font-weight: 600;">$$</span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">rhs_ty</span> <span class="p">)</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1987" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1987

</td>

<td class="diff-line-num new_line" data-linenumber="1987" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1987

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<pre style="margin: 0;"> <span id="LC1987" class="line" lang="haskell">           <span class="c1" style="color: #998; font-style: italic;">-- Guaranteed by Note [FunEq occurs-check principle]</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="1988" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

1988

</td>

<td class="diff-line-num new_line old" data-linenumber="1988" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC1988" class="line" lang="haskell">    <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">rhs_xi</span><span class="p">,</span> <span class="n" style="color: #333;">flatten_co</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">flatten</span> <span class="kt" style="color: #458; font-weight: 600;">FM_FlattenAll</span> <span class="n" style="color: #333;">old_ev</span> <span class="n" style="color: #333;">rhs_ty</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="1989" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="1988" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1988

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<pre style="margin: 0;">+<span id="LC1988" class="line" lang="haskell">    <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">rhs_xi</span><span class="p">,</span> <span class="n" style="color: #333;">flatten_co</span><span class="p"><span class="idiff left">,</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">_wrw</span></span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">flatten</span> <span class="kt" style="color: #458; font-weight: 600;">FM_FlattenAll</span> <span class="n" style="color: #333;">old_ev</span> <span class="n" style="color: #333;">rhs_ty</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1989" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1989

</td>

<td class="diff-line-num new_line" data-linenumber="1989" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1989

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<pre style="margin: 0;"> <span id="LC1989" class="line" lang="haskell">             <span class="c1" style="color: #998; font-style: italic;">-- flatten_co :: rhs_xi ~ rhs_ty</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1990" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1990

</td>

<td class="diff-line-num new_line" data-linenumber="1990" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1990

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<pre style="margin: 0;"> <span id="LC1990" class="line" lang="haskell">             <span class="c1" style="color: #998; font-style: italic;">-- See Note [Flatten when discharging CFunEqCan]</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1991" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1991

</td>

<td class="diff-line-num new_line" data-linenumber="1991" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1991

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<pre style="margin: 0;"> <span id="LC1991" class="line" lang="haskell">       <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">total_co</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ax_co</span> <span class="p">`</span><span class="n" style="color: #333;">mkTcTransCo</span><span class="p">`</span> <span class="n" style="color: #333;">mkTcSymCo</span> <span class="n" style="color: #333;">flatten_co</span></span>

</pre>

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<br>

</li>

<li id="0c6b585a8a21f8340a85ca2cef89c4b1bf5a8953">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/609563362994f3a6704308a73779ac0d29c58557...e091141d11228f719a56681736d5c2d75e760407#0c6b585a8a21f8340a85ca2cef89c4b1bf5a8953"><strong>compiler/GHC/Tc/Solver/Monad.hs</strong></a>

<hr>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="3201" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="3201" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -3201,10 +3201,10 @@ zonkTyCoVarKind tv = wrapTcS (TcM.zonkTyCoVarKind tv)</td>

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<td class="diff-line-num old_line" data-linenumber="3201" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

3201

</td>

<td class="diff-line-num new_line" data-linenumber="3201" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

3201

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<pre style="margin: 0;"> <span id="LC3201" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">*                                                                      *</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="3202" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

3202

</td>

<td class="diff-line-num new_line" data-linenumber="3202" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

3202

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<pre style="margin: 0;"> <span id="LC3202" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">********************************************************************* -}</span></span>

</pre>

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3203

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<pre style="margin: 0;"> <span id="LC3203" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="3204" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<td class="diff-line-num new_line old" data-linenumber="3204" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC3204" class="line" lang="haskell"><span class="n" style="color: #333;">newFlattenSkolem</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">CtFlavour</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">CtLoc</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC3204" class="line" lang="haskell"><span class="n" style="color: #333;">newFlattenSkolem</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">CtFlavour</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">CtLoc</span><span class="idiff left"> </span><span class="o" style="font-weight: 600;"><span class="idiff">-></span></span><span class="idiff"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff right">CtReportAs</span></span></span>

</pre>

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3205

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<pre style="margin: 0;"> <span id="LC3205" class="line" lang="haskell">                 <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyCon</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">TcType</span><span class="p">]</span>                    <span class="c1" style="color: #998; font-style: italic;">-- F xis</span></span>

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<td class="diff-line-num old_line" data-linenumber="3206" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

3206

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<pre style="margin: 0;"> <span id="LC3206" class="line" lang="haskell">                 <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcS</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">CtEvidence</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Coercion</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">TcTyVar</span><span class="p">)</span>  <span class="c1" style="color: #998; font-style: italic;">-- [G/WD] x:: F xis ~ fsk</span></span>

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3207

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<td class="diff-line-num new_line old" data-linenumber="3207" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC3207" class="line" lang="haskell"><span class="n" style="color: #333;">newFlattenSkolem</span> <span class="n" style="color: #333;">flav</span> <span class="n" style="color: #333;">loc</span> <span class="n" style="color: #333;">tc</span> <span class="n" style="color: #333;">xis</span></span>

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<td class="diff-line-num new old_line" data-linenumber="3208" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC3207" class="line" lang="haskell"><span class="n" style="color: #333;">newFlattenSkolem</span> <span class="n" style="color: #333;">flav</span> <span class="n" style="color: #333;">loc</span> <span class="n" style="color: #333;"><span class="idiff left">report_as</span></span><span class="idiff right"> </span><span class="n" style="color: #333;">tc</span> <span class="n" style="color: #333;">xis</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC3208" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">stuff</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="n" style="color: #333;">ev</span><span class="p">,</span> <span class="n" style="color: #333;">co</span><span class="p">,</span> <span class="n" style="color: #333;">fsk</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">new_skolem</span></span>

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<pre style="margin: 0;"> <span id="LC3209" class="line" lang="haskell">       <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">fsk_ty</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mkTyVarTy</span> <span class="n" style="color: #333;">fsk</span></span>

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<pre style="margin: 0;"> <span id="LC3210" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">extendFlatCache</span> <span class="n" style="color: #333;">tc</span> <span class="n" style="color: #333;">xis</span> <span class="p">(</span><span class="n" style="color: #333;">co</span><span class="p">,</span> <span class="n" style="color: #333;">fsk_ty</span><span class="p">,</span> <span class="n" style="color: #333;">ctEvFlavour</span> <span class="n" style="color: #333;">ev</span><span class="p">)</span></span>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="3230" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="3230" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -3230,8 +3230,7 @@ newFlattenSkolem flav loc tc xis</td>

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<pre style="margin: 0;"> <span id="LC3230" class="line" lang="haskell">      <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">fmv</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">wrapTcS</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">TcM</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">newFmvTyVar</span> <span class="n" style="color: #333;">fam_ty</span><span class="p">)</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC3231" class="line" lang="haskell">              <span class="c1" style="color: #998; font-style: italic;">-- See (2a) in TcCanonical</span></span>

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<pre style="margin: 0;"> <span id="LC3232" class="line" lang="haskell">              <span class="c1" style="color: #998; font-style: italic;">-- Note [Equalities with incompatible kinds]</span></span>

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<td class="diff-line-num old old_line" data-linenumber="3233" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<td class="diff-line-num new_line old" data-linenumber="3233" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC3233" class="line" lang="haskell">           <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">pred_ty</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mkPrimEqPred</span> <span class="n" style="color: #333;">fam_ty</span> <span class="p">(</span><span class="n" style="color: #333;">mkTyVarTy</span> <span class="n" style="color: #333;">fmv</span><span class="p">)</span></span>

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<td class="diff-line-num old old_line" data-linenumber="3234" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC3234" class="line" lang="haskell">           <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">ev</span><span class="p">,</span> <span class="n" style="color: #333;">hole_co</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">newWantedEq_SI</span> <span class="kt" style="color: #458; font-weight: 600;">NoBlockSubst</span> <span class="kt" style="color: #458; font-weight: 600;">WDeriv</span> <span class="n" style="color: #333;">loc</span> <span class="kt" style="color: #458; font-weight: 600;">CtReportAsSame</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="3233" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC3233" class="line" lang="haskell">           <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">ev</span><span class="p">,</span> <span class="n" style="color: #333;">hole_co</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">newWantedEq_SI</span> <span class="kt" style="color: #458; font-weight: 600;">NoBlockSubst</span> <span class="kt" style="color: #458; font-weight: 600;">WDeriv</span> <span class="n" style="color: #333;">loc</span> <span class="n" style="color: #333;">report_as</span></span>

</pre>

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3235

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<td class="diff-line-num new_line" data-linenumber="3234" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC3234" class="line" lang="haskell">                                             <span class="kt" style="color: #458; font-weight: 600;">Nominal</span> <span class="n" style="color: #333;">fam_ty</span> <span class="p">(</span><span class="n" style="color: #333;">mkTyVarTy</span> <span class="n" style="color: #333;">fmv</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="3236" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

3236

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<td class="diff-line-num new_line" data-linenumber="3235" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC3235" class="line" lang="haskell">           <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">ev</span><span class="p">,</span> <span class="n" style="color: #333;">hole_co</span><span class="p">,</span> <span class="n" style="color: #333;">fmv</span><span class="p">)</span> <span class="p">}</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="3237" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

3237

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<td class="diff-line-num new_line" data-linenumber="3236" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC3236" class="line" lang="haskell"></span>

</pre>

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<br>

</li>

<li id="3b6d78a50c8462304f843b952a88e531718dbbd2">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/609563362994f3a6704308a73779ac0d29c58557...e091141d11228f719a56681736d5c2d75e760407#3b6d78a50c8462304f843b952a88e531718dbbd2"><strong>compiler/GHC/Tc/Types/Constraint.hs</strong></a>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="51" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="51" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -51,8 +51,10 @@ module GHC.Tc.Types.Constraint (</td>

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<td class="diff-line-num old_line" data-linenumber="51" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC51" class="line" lang="haskell">        <span class="nf" style="color: #900; font-weight: 600;">isWanted</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">isGiven</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">isDerived</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">isGivenOrWDeriv</span><span class="p">,</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="52" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<td class="diff-line-num new_line" data-linenumber="52" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC52" class="line" lang="haskell">        <span class="nf" style="color: #900; font-weight: 600;">ctEvRole</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">setCtEvLoc</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">arisesFromGivens</span><span class="p">,</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="53" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<td class="diff-line-num new_line" data-linenumber="53" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC53" class="line" lang="haskell">        <span class="nf" style="color: #900; font-weight: 600;">tyCoVarsOfCtEvList</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">tyCoVarsOfCtEv</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">tyCoVarsOfCtEvsList</span><span class="p">,</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC54" class="line" lang="haskell">        <span class="nf" style="color: #900; font-weight: 600;">ctEvReportAs</span><span class="p">,</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="54" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<td class="diff-line-num new_line" data-linenumber="55" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC55" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="55" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<td class="diff-line-num new_line" data-linenumber="56" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC56" class="line" lang="haskell">        <span class="kt" style="color: #458; font-weight: 600;">CtReportAs</span><span class="p">(</span><span class="o" style="font-weight: 600;">..</span><span class="p">),</span> <span class="nf" style="color: #900; font-weight: 600;">ctPredToReport</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">substCtReportAs</span><span class="p">,</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="56" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="57" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC57" class="line" lang="haskell">        <span class="nf" style="color: #900; font-weight: 600;">updateReportAs</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">WRWFlag</span><span class="p">(</span><span class="o" style="font-weight: 600;">..</span><span class="p">),</span> <span class="nf" style="color: #900; font-weight: 600;">wantedRewriteWanted</span><span class="p">,</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="56" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<td class="diff-line-num new_line" data-linenumber="58" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC58" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="57" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<td class="diff-line-num new_line" data-linenumber="59" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC59" class="line" lang="haskell">        <span class="nf" style="color: #900; font-weight: 600;">wrapType</span><span class="p">,</span></span>

</pre>

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<td class="diff-line-num new_line" data-linenumber="60" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC60" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="101" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="103" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -101,6 +103,7 @@ import GHC.Types.SrcLoc</td>

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<td class="diff-line-num new_line" data-linenumber="103" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC103" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Data.Bag</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC104" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Utils.Misc</span></span>

</pre>

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103

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<td class="diff-line-num new_line" data-linenumber="105" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

105

</td>

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<pre style="margin: 0;"> <span id="LC105" class="line" lang="haskell"></span>

</pre>

</td>

</tr>

<tr class="line_holder new" id="" style="line-height: 1.6;">

<td class="diff-line-num new old_line" data-linenumber="104" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="106" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

106

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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC106" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="k" style="font-weight: 600;">qualified</span> <span class="nn" style="color: #555;">Data.Semigroup</span></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="104" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

104

</td>

<td class="diff-line-num new_line" data-linenumber="107" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

107

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<pre style="margin: 0;"> <span id="LC107" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Control.Monad</span> <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;">msum</span> <span class="p">)</span></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="105" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

105

</td>

<td class="diff-line-num new_line" data-linenumber="108" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

108

</td>

<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC108" class="line" lang="haskell"></span>

</pre>

</td>

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<tr class="line_holder" id="" style="line-height: 1.6;">

<td class="diff-line-num old_line" data-linenumber="106" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

106

</td>

<td class="diff-line-num new_line" data-linenumber="109" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

109

</td>

<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC109" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">{-</span></span>

</pre>

</td>

</tr>

<tr class="line_holder match" id="" style="line-height: 1.6;">

<td class="diff-line-num unfold js-unfold old_line" data-linenumber="1410" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="1413" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1410,6 +1413,17 @@ data CtReportAs</td>

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<td class="diff-line-num old_line" data-linenumber="1410" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1410

</td>

<td class="diff-line-num new_line" data-linenumber="1413" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1413

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<pre style="margin: 0;"> <span id="LC1413" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">CtReportAsSame</span>               <span class="c1" style="color: #998; font-style: italic;">-- just report the predicate in the Ct</span></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="1411" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1411

</td>

<td class="diff-line-num new_line" data-linenumber="1414" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1414

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<pre style="margin: 0;"> <span id="LC1414" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">|</span> <span class="kt" style="color: #458; font-weight: 600;">CtReportAsOther</span> <span class="kt" style="color: #458; font-weight: 600;">TcPredType</span>   <span class="c1" style="color: #998; font-style: italic;">-- report this other type</span></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="1412" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1412

</td>

<td class="diff-line-num new_line" data-linenumber="1415" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1415

</td>

<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC1415" class="line" lang="haskell"></span>

</pre>

</td>

</tr>

<tr class="line_holder new" id="" style="line-height: 1.6;">

<td class="diff-line-num new old_line" data-linenumber="1413" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="1416" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1416

</td>

<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC1416" class="line" lang="haskell"><span class="cd">-- | Did a wanted rewrite a wanted?</span></span>

</pre>

</td>

</tr>

<tr class="line_holder new" id="" style="line-height: 1.6;">

<td class="diff-line-num new old_line" data-linenumber="1413" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="1417" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1417

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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC1417" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See Note [Wanteds rewrite Wanteds]</span></span>

</pre>

</td>

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<tr class="line_holder new" id="" style="line-height: 1.6;">

<td class="diff-line-num new old_line" data-linenumber="1413" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="1418" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1418

</td>

<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC1418" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">data</span> <span class="kt" style="color: #458; font-weight: 600;">WRWFlag</span></span>

</pre>

</td>

</tr>

<tr class="line_holder new" id="" style="line-height: 1.6;">

<td class="diff-line-num new old_line" data-linenumber="1413" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="1419" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1419

</td>

<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC1419" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">YesWRW</span></span>

</pre>

</td>

</tr>

<tr class="line_holder new" id="" style="line-height: 1.6;">

<td class="diff-line-num new old_line" data-linenumber="1413" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="1420" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1420

</td>

<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC1420" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">|</span> <span class="kt" style="color: #458; font-weight: 600;">NoWRW</span></span>

</pre>

</td>

</tr>

<tr class="line_holder new" id="" style="line-height: 1.6;">

<td class="diff-line-num new old_line" data-linenumber="1413" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="1421" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1421

</td>

<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC1421" class="line" lang="haskell">  <span class="kr" style="font-weight: 600;">deriving</span> <span class="kt" style="color: #458; font-weight: 600;">Eq</span></span>

</pre>

</td>

</tr>

<tr class="line_holder new" id="" style="line-height: 1.6;">

<td class="diff-line-num new old_line" data-linenumber="1413" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="1422" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1422

</td>

<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC1422" class="line" lang="haskell"></span>

</pre>

</td>

</tr>

<tr class="line_holder new" id="" style="line-height: 1.6;">

<td class="diff-line-num new old_line" data-linenumber="1413" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="1423" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1423

</td>

<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC1423" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">instance</span> <span class="kt" style="color: #458; font-weight: 600;">Semigroup</span> <span class="kt" style="color: #458; font-weight: 600;">WRWFlag</span> <span class="kr" style="font-weight: 600;">where</span></span>

</pre>

</td>

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<tr class="line_holder new" id="" style="line-height: 1.6;">

<td class="diff-line-num new old_line" data-linenumber="1413" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="1424" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1424

</td>

<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC1424" class="line" lang="haskell">  <span class="kt" style="color: #458; font-weight: 600;">NoWRW</span> <span class="o" style="font-weight: 600;"><></span> <span class="kt" style="color: #458; font-weight: 600;">NoWRW</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">NoWRW</span></span>

</pre>

</td>

</tr>

<tr class="line_holder new" id="" style="line-height: 1.6;">

<td class="diff-line-num new old_line" data-linenumber="1413" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="1425" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1425

</td>

<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC1425" class="line" lang="haskell">  <span class="kr" style="font-weight: 600;">_</span>     <span class="o" style="font-weight: 600;"><></span> <span class="kr" style="font-weight: 600;">_</span>     <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">YesWRW</span></span>

</pre>

</td>

</tr>

<tr class="line_holder new" id="" style="line-height: 1.6;">

<td class="diff-line-num new old_line" data-linenumber="1413" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="1426" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1426

</td>

<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC1426" class="line" lang="haskell"></span>

</pre>

</td>

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<td class="diff-line-num new_line" data-linenumber="1427" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1427

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<pre style="margin: 0;"> <span id="LC1427" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">data</span> <span class="kt" style="color: #458; font-weight: 600;">CtEvidence</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1414" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1414

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<td class="diff-line-num new_line" data-linenumber="1428" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1428

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<pre style="margin: 0;"> <span id="LC1428" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">CtGiven</span>    <span class="c1" style="color: #998; font-style: italic;">-- Truly given, not depending on subgoals</span></span>

</pre>

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1415

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<td class="diff-line-num new_line" data-linenumber="1429" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1429

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<pre style="margin: 0;"> <span id="LC1429" class="line" lang="haskell">      <span class="p">{</span> <span class="n" style="color: #333;">ctev_pred</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TcPredType</span>      <span class="c1" style="color: #998; font-style: italic;">-- See Note [Ct/evidence invariant]</span></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="1482" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="1496" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1482,6 +1496,12 @@ arisesFromGivens Given       _   = True</td>

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<td class="diff-line-num old_line" data-linenumber="1482" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<td class="diff-line-num new_line" data-linenumber="1496" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC1496" class="line" lang="haskell"><span class="n" style="color: #333;">arisesFromGivens</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Wanted</span> <span class="p">{})</span> <span class="kr" style="font-weight: 600;">_</span>   <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">False</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1483" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<td class="diff-line-num new_line" data-linenumber="1497" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC1497" class="line" lang="haskell"><span class="n" style="color: #333;">arisesFromGivens</span> <span class="kt" style="color: #458; font-weight: 600;">Derived</span>     <span class="n" style="color: #333;">loc</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">isGivenLoc</span> <span class="n" style="color: #333;">loc</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1484" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<td class="diff-line-num new_line" data-linenumber="1498" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1498

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<pre style="margin: 0;"> <span id="LC1498" class="line" lang="haskell"></span>

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<td class="diff-line-num new old_line" data-linenumber="1485" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="1499" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC1499" class="line" lang="haskell"><span class="cd">-- | Return a 'CtReportAs' from a 'CtEvidence'. Returns</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC1500" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- 'CtReportAsSame' for non-wanteds.</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC1501" class="line" lang="haskell"><span class="n" style="color: #333;">ctEvReportAs</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">CtEvidence</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">CtReportAs</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="1485" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC1502" class="line" lang="haskell"><span class="n" style="color: #333;">ctEvReportAs</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">CtWanted</span> <span class="p">{</span> <span class="n" style="color: #333;">ctev_report_as</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">report_as</span> <span class="p">})</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">report_as</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="1503" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC1503" class="line" lang="haskell"><span class="n" style="color: #333;">ctEvReportAs</span> <span class="kr" style="font-weight: 600;">_</span>                                         <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">CtReportAsSame</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="1485" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="1504" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1504

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<pre style="margin: 0;">+<span id="LC1504" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1485" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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1505

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<pre style="margin: 0;"> <span id="LC1505" class="line" lang="haskell"><span class="cd">-- | Given the pred in a CtWanted and its 'CtReportAs', get</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1486" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1486

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1506

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<pre style="margin: 0;"> <span id="LC1506" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- the pred to report. See Note [Wanteds rewrite Wanteds]</span></span>

</pre>

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1487

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<td class="diff-line-num new_line" data-linenumber="1507" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC1507" class="line" lang="haskell"><span class="n" style="color: #333;">ctPredToReport</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TcPredType</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">CtReportAs</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcPredType</span></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="1493" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="1513" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1493,6 +1513,15 @@ substCtReportAs :: TCvSubst -> CtReportAs -> CtReportAs</td>

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1493

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1513

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<pre style="margin: 0;"> <span id="LC1513" class="line" lang="haskell"><span class="n" style="color: #333;">substCtReportAs</span> <span class="kr" style="font-weight: 600;">_</span>     <span class="kt" style="color: #458; font-weight: 600;">CtReportAsSame</span>         <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">CtReportAsSame</span></span>

</pre>

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1494

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1514

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<pre style="margin: 0;"> <span id="LC1514" class="line" lang="haskell"><span class="n" style="color: #333;">substCtReportAs</span> <span class="n" style="color: #333;">subst</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">CtReportAsOther</span> <span class="n" style="color: #333;">pred</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">CtReportAsOther</span> <span class="p">(</span><span class="n" style="color: #333;">substTy</span> <span class="n" style="color: #333;">subst</span> <span class="n" style="color: #333;">pred</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1495" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1495

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<td class="diff-line-num new_line" data-linenumber="1515" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1515

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<pre style="margin: 0;"> <span id="LC1515" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="1496" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="1516" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1516

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<pre style="margin: 0;">+<span id="LC1516" class="line" lang="haskell"><span class="cd">-- | After rewriting a Wanted, update the 'CtReportAs' for the new Wanted.</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="1496" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="1517" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1517

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<pre style="margin: 0;">+<span id="LC1517" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- If the old CtReportAs is CtReportAsSame and a wanted rewrote a wanted,</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="1496" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="1518" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1518

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<pre style="margin: 0;">+<span id="LC1518" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- record the old pred as the new CtReportAs.</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="1496" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="1519" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1519

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<pre style="margin: 0;">+<span id="LC1519" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See Note [Wanteds rewrite Wanteds]</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="1496" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="1520" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1520

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<pre style="margin: 0;">+<span id="LC1520" class="line" lang="haskell"><span class="n" style="color: #333;">updateReportAs</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">WRWFlag</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcPredType</span>   <span class="c1" style="color: #998; font-style: italic;">-- _old_ pred type</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="1496" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="1521" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1521

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<pre style="margin: 0;">+<span id="LC1521" class="line" lang="haskell">               <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">CtReportAs</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">CtReportAs</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="1496" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="1522" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1522

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<pre style="margin: 0;">+<span id="LC1522" class="line" lang="haskell"><span class="n" style="color: #333;">updateReportAs</span> <span class="kt" style="color: #458; font-weight: 600;">YesWRW</span> <span class="n" style="color: #333;">old_pred</span> <span class="kt" style="color: #458; font-weight: 600;">CtReportAsSame</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">CtReportAsOther</span> <span class="n" style="color: #333;">old_pred</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="1496" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="1523" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1523

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<pre style="margin: 0;">+<span id="LC1523" class="line" lang="haskell"><span class="n" style="color: #333;">updateReportAs</span> <span class="kr" style="font-weight: 600;">_</span>      <span class="kr" style="font-weight: 600;">_</span>        <span class="n" style="color: #333;">report_as</span>      <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">report_as</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="1496" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="1524" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1524

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<pre style="margin: 0;">+<span id="LC1524" class="line" lang="haskell"></span>

</pre>

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1496

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<td class="diff-line-num new_line" data-linenumber="1525" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1525

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<pre style="margin: 0;"> <span id="LC1525" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">instance</span> <span class="kt" style="color: #458; font-weight: 600;">Outputable</span> <span class="kt" style="color: #458; font-weight: 600;">TcEvDest</span> <span class="kr" style="font-weight: 600;">where</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1497" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1497

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<td class="diff-line-num new_line" data-linenumber="1526" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1526

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<pre style="margin: 0;"> <span id="LC1526" class="line" lang="haskell">  <span class="n" style="color: #333;">ppr</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HoleDest</span> <span class="n" style="color: #333;">h</span><span class="p">)</span>   <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"hole"</span> <span class="o" style="font-weight: 600;"><></span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">h</span></span>

</pre>

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1498

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<td class="diff-line-num new_line" data-linenumber="1527" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1527

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<pre style="margin: 0;"> <span id="LC1527" class="line" lang="haskell">  <span class="n" style="color: #333;">ppr</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">EvVarDest</span> <span class="n" style="color: #333;">ev</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">ev</span></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="1501" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="1530" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1501,6 +1530,10 @@ instance Outputable CtReportAs where</td>

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1530

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<pre style="margin: 0;"> <span id="LC1530" class="line" lang="haskell">  <span class="n" style="color: #333;">ppr</span> <span class="kt" style="color: #458; font-weight: 600;">CtReportAsSame</span>         <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"CtReportAsSame"</span></span>

</pre>

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1502

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1531

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<pre style="margin: 0;"> <span id="LC1531" class="line" lang="haskell">  <span class="n" style="color: #333;">ppr</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">CtReportAsOther</span> <span class="n" style="color: #333;">pred</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">parens</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"CtReportAsOther"</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">pred</span></span>

</pre>

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1503

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<td class="diff-line-num new_line" data-linenumber="1532" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1532

</td>

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<pre style="margin: 0;"> <span id="LC1532" class="line" lang="haskell"></span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="1504" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="1533" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1533

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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC1533" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">instance</span> <span class="kt" style="color: #458; font-weight: 600;">Outputable</span> <span class="kt" style="color: #458; font-weight: 600;">WRWFlag</span> <span class="kr" style="font-weight: 600;">where</span></span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="1504" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="1534" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1534

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<pre style="margin: 0;">+<span id="LC1534" class="line" lang="haskell">  <span class="n" style="color: #333;">ppr</span> <span class="kt" style="color: #458; font-weight: 600;">NoWRW</span>  <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"NoWRW"</span></span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="1504" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="1535" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1535

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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC1535" class="line" lang="haskell">  <span class="n" style="color: #333;">ppr</span> <span class="kt" style="color: #458; font-weight: 600;">YesWRW</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"YesWRW"</span></span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="1504" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="1536" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1536

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<pre style="margin: 0;">+<span id="LC1536" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1504" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1504

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<td class="diff-line-num new_line" data-linenumber="1537" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1537

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<pre style="margin: 0;"> <span id="LC1537" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">instance</span> <span class="kt" style="color: #458; font-weight: 600;">Outputable</span> <span class="kt" style="color: #458; font-weight: 600;">CtEvidence</span> <span class="kr" style="font-weight: 600;">where</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1505" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1505

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<td class="diff-line-num new_line" data-linenumber="1538" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1538

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<pre style="margin: 0;"> <span id="LC1538" class="line" lang="haskell">  <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">ev</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ppr</span> <span class="p">(</span><span class="n" style="color: #333;">ctEvFlavour</span> <span class="n" style="color: #333;">ev</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1506" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1506

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<td class="diff-line-num new_line" data-linenumber="1539" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1539

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<pre style="margin: 0;"> <span id="LC1539" class="line" lang="haskell">           <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">pp_ev</span></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="1689" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="1722" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1689,6 +1722,14 @@ eqMayRewriteFR :: CtFlavourRole -> CtFlavourRole -> Bool</td>

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<td class="diff-line-num old_line" data-linenumber="1689" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1689

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<td class="diff-line-num new_line" data-linenumber="1722" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1722

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<pre style="margin: 0;"> <span id="LC1722" class="line" lang="haskell"><span class="n" style="color: #333;">eqMayRewriteFR</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Derived</span><span class="p">,</span>       <span class="kt" style="color: #458; font-weight: 600;">NomEq</span><span class="p">)</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Wanted</span> <span class="kt" style="color: #458; font-weight: 600;">WDeriv</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">NomEq</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">True</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1690" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1690

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<td class="diff-line-num new_line" data-linenumber="1723" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1723

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<pre style="margin: 0;"> <span id="LC1723" class="line" lang="haskell"><span class="n" style="color: #333;">eqMayRewriteFR</span> <span class="n" style="color: #333;">fr1</span> <span class="n" style="color: #333;">fr2</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">eqCanRewriteFR</span> <span class="n" style="color: #333;">fr1</span> <span class="n" style="color: #333;">fr2</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1691" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1691

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<td class="diff-line-num new_line" data-linenumber="1724" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1724

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<pre style="margin: 0;"> <span id="LC1724" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="1692" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="1725" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1725

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<pre style="margin: 0;">+<span id="LC1725" class="line" lang="haskell"><span class="cd">-- | Checks if the first flavour rewriting the second is a wanted</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="1692" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="1726" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1726

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<pre style="margin: 0;">+<span id="LC1726" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- rewriting a wanted. See Note [Wanteds rewrite Wanteds]</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="1692" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="1727" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1727

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<pre style="margin: 0;">+<span id="LC1727" class="line" lang="haskell"><span class="n" style="color: #333;">wantedRewriteWanted</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">CtFlavourRole</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">CtFlavourRole</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">WRWFlag</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="1692" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="1728" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1728

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<pre style="margin: 0;">+<span id="LC1728" class="line" lang="haskell"><span class="n" style="color: #333;">wantedRewriteWanted</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Wanted</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">,</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">)</span> <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">YesWRW</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="1692" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="1729" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1729

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<pre style="margin: 0;">+<span id="LC1729" class="line" lang="haskell"><span class="n" style="color: #333;">wantedRewriteWanted</span> <span class="kr" style="font-weight: 600;">_</span>             <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">NoWRW</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="1692" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="1730" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1730

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<pre style="margin: 0;">+<span id="LC1730" class="line" lang="haskell">  <span class="c1" style="color: #998; font-style: italic;">-- It doesn't matter what the second argument is; it can only</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="1731" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC1731" class="line" lang="haskell">  <span class="c1" style="color: #998; font-style: italic;">-- be Wanted or Derived anyway</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="1692" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="1732" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1732

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<pre style="margin: 0;">+<span id="LC1732" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1692" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1692

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<td class="diff-line-num new_line" data-linenumber="1733" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1733

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<pre style="margin: 0;"> <span id="LC1733" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-----------------</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1693" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1693

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<td class="diff-line-num new_line" data-linenumber="1734" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1734

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<pre style="margin: 0;"> <span id="LC1734" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">{- Note [funEqCanDischarge]</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1694" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1694

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<td class="diff-line-num new_line" data-linenumber="1735" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1735

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<pre style="margin: 0;"> <span id="LC1735" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">~~~~~~~~~~~~~~~~~~~~~~~~~~~</span></span>

</pre>

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<br>

</li>

<li id="94c96afe1bb3b771ffbcfeeca34ce43ebbe76ccb">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/609563362994f3a6704308a73779ac0d29c58557...e091141d11228f719a56681736d5c2d75e760407#94c96afe1bb3b771ffbcfeeca34ce43ebbe76ccb"><strong>compiler/GHC/Tc/Utils/TcMType.hs</strong></a>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="2082" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="2082" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -2082,13 +2082,19 @@ zonkCtEvidence :: CtEvidence -> TcM CtEvidence</td>

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<pre style="margin: 0;"> <span id="LC2082" class="line" lang="haskell"><span class="n" style="color: #333;">zonkCtEvidence</span> <span class="n" style="color: #333;">ctev</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">CtGiven</span> <span class="p">{</span> <span class="n" style="color: #333;">ctev_pred</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">pred</span> <span class="p">})</span></span>

</pre>

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2083

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2083

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<pre style="margin: 0;"> <span id="LC2083" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">pred'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">zonkTcType</span> <span class="n" style="color: #333;">pred</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="2084" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2084

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2084

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<pre style="margin: 0;"> <span id="LC2084" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">ctev</span> <span class="p">{</span> <span class="n" style="color: #333;">ctev_pred</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">pred'</span><span class="p">})</span> <span class="p">}</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="2085" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

2085

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<pre style="margin: 0;">-<span id="LC2085" class="line" lang="haskell"><span class="n" style="color: #333;">zonkCtEvidence</span> <span class="n" style="color: #333;">ctev</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">CtWanted</span> <span class="p">{</span> <span class="n" style="color: #333;">ctev_pred</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">pred</span><span class="p">,</span> <span class="n" style="color: #333;">ctev_dest</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">dest</span> <span class="p">})</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="2086" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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2085

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<pre style="margin: 0;">+<span id="LC2085" class="line" lang="haskell"><span class="n" style="color: #333;">zonkCtEvidence</span> <span class="n" style="color: #333;">ctev</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">CtWanted</span> <span class="p">{</span> <span class="n" style="color: #333;">ctev_pred</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">pred</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="2086" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="2086" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

2086

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<pre style="margin: 0;">+<span id="LC2086" class="line" lang="haskell">                              <span class="p">,</span> <span class="n" style="color: #333;">ctev_dest</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">dest</span></span>

</pre>

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</td>

<td class="diff-line-num new new_line" data-linenumber="2087" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

2087

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<pre style="margin: 0;">+<span id="LC2087" class="line" lang="haskell">                              <span class="p">,</span> <span class="n" style="color: #333;">ctev_report_as</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">report_as</span> <span class="p">})</span></span>

</pre>

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2086

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<td class="diff-line-num new_line" data-linenumber="2088" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2088

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<pre style="margin: 0;"> <span id="LC2088" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">pred'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">zonkTcType</span> <span class="n" style="color: #333;">pred</span></span>

</pre>

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2087

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<td class="diff-line-num new_line" data-linenumber="2089" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2089

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<pre style="margin: 0;"> <span id="LC2089" class="line" lang="haskell">       <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">dest'</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">dest</span> <span class="kr" style="font-weight: 600;">of</span></span>

</pre>

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2088

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<td class="diff-line-num new_line" data-linenumber="2090" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2090

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<pre style="margin: 0;"> <span id="LC2090" class="line" lang="haskell">                       <span class="kt" style="color: #458; font-weight: 600;">EvVarDest</span> <span class="n" style="color: #333;">ev</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">EvVarDest</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">setVarType</span> <span class="n" style="color: #333;">ev</span> <span class="n" style="color: #333;">pred'</span></span>

</pre>

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2089

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<td class="diff-line-num new_line" data-linenumber="2091" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2091

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<pre style="margin: 0;"> <span id="LC2091" class="line" lang="haskell">                         <span class="c1" style="color: #998; font-style: italic;">-- necessary in simplifyInfer</span></span>

</pre>

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2092

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<pre style="margin: 0;"> <span id="LC2092" class="line" lang="haskell">                       <span class="kt" style="color: #458; font-weight: 600;">HoleDest</span> <span class="n" style="color: #333;">h</span>   <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">HoleDest</span> <span class="n" style="color: #333;">h</span></span>

</pre>

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2091

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<pre style="margin: 0;">-<span id="LC2091" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">ctev</span> <span class="p">{</span> <span class="n" style="color: #333;">ctev_pred</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">pred'</span><span class="p">,</span> <span class="n" style="color: #333;">ctev_dest</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">dest'</span> <span class="p">})</span> <span class="p">}</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC2093" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">report_as'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">report_as</span> <span class="kr" style="font-weight: 600;">of</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC2094" class="line" lang="haskell">           <span class="kt" style="color: #458; font-weight: 600;">CtReportAsSame</span>              <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">return</span> <span class="kt" style="color: #458; font-weight: 600;">CtReportAsSame</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="2095" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC2095" class="line" lang="haskell">           <span class="kt" style="color: #458; font-weight: 600;">CtReportAsOther</span> <span class="n" style="color: #333;">report_pred</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">CtReportAsOther</span> <span class="o" style="font-weight: 600;"><$></span> <span class="n" style="color: #333;">zonkTcType</span> <span class="n" style="color: #333;">report_pred</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC2096" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">ctev</span> <span class="p">{</span> <span class="n" style="color: #333;">ctev_pred</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">pred'</span><span class="p">,</span> <span class="n" style="color: #333;">ctev_dest</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">dest'</span></span>

</pre>

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2097

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<pre style="margin: 0;">+<span id="LC2097" class="line" lang="haskell">                      <span class="p">,</span> <span class="n" style="color: #333;">ctev_report_as</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">report_as'</span> <span class="p">})</span> <span class="p">}</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC2098" class="line" lang="haskell"><span class="n" style="color: #333;">zonkCtEvidence</span> <span class="n" style="color: #333;">ctev</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">CtDerived</span> <span class="p">{</span> <span class="n" style="color: #333;">ctev_pred</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">pred</span> <span class="p">})</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC2099" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">pred'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">zonkTcType</span> <span class="n" style="color: #333;">pred</span></span>

</pre>

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2100

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<pre style="margin: 0;"> <span id="LC2100" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">ctev</span> <span class="p">{</span> <span class="n" style="color: #333;">ctev_pred</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">pred'</span> <span class="p">})</span> <span class="p">}</span></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="2275" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="2281" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -2275,6 +2281,12 @@ tidyCt env ct = ct { cc_ev = tidyCtEvidence env (ctEvidence ct) }</td>

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<pre style="margin: 0;"> <span id="LC2281" class="line" lang="haskell"><span class="n" style="color: #333;">tidyCtEvidence</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TidyEnv</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">CtEvidence</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">CtEvidence</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC2282" class="line" lang="haskell">     <span class="c1" style="color: #998; font-style: italic;">-- NB: we do not tidy the ctev_evar field because we don't</span></span>

</pre>

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2277

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2283

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<pre style="margin: 0;"> <span id="LC2283" class="line" lang="haskell">     <span class="c1" style="color: #998; font-style: italic;">--     show it in error messages</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="2278" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="2284" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC2284" class="line" lang="haskell">     <span class="c1" style="color: #998; font-style: italic;">-- But definitely do tidy the report_as field, as that's reported.</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC2285" class="line" lang="haskell"><span class="n" style="color: #333;">tidyCtEvidence</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">ctev</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">CtWanted</span> <span class="p">{</span> <span class="n" style="color: #333;">ctev_pred</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">pred</span><span class="p">,</span> <span class="n" style="color: #333;">ctev_report_as</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">report_as</span> <span class="p">})</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC2286" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ctev</span> <span class="p">{</span> <span class="n" style="color: #333;">ctev_pred</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tidyType</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">pred</span><span class="p">,</span> <span class="n" style="color: #333;">ctev_report_as</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tidy_report_as</span> <span class="n" style="color: #333;">report_as</span> <span class="p">}</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="2278" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="2287" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC2287" class="line" lang="haskell">  <span class="kr" style="font-weight: 600;">where</span> <span class="n" style="color: #333;">tidy_report_as</span> <span class="kt" style="color: #458; font-weight: 600;">CtReportAsSame</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">CtReportAsSame</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="2278" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="2288" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC2288" class="line" lang="haskell">        <span class="n" style="color: #333;">tidy_report_as</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">CtReportAsOther</span> <span class="n" style="color: #333;">report_pred</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="2278" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="2289" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

2289

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<pre style="margin: 0;">+<span id="LC2289" class="line" lang="haskell">          <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">CtReportAsOther</span> <span class="p">(</span><span class="n" style="color: #333;">tidyType</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">report_pred</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="2278" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2278

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<td class="diff-line-num new_line" data-linenumber="2290" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2290

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<pre style="margin: 0;"> <span id="LC2290" class="line" lang="haskell"><span class="n" style="color: #333;">tidyCtEvidence</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">ctev</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ctev</span> <span class="p">{</span> <span class="n" style="color: #333;">ctev_pred</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tidyType</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">ty</span> <span class="p">}</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="2279" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2279

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<td class="diff-line-num new_line" data-linenumber="2291" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2291

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<pre style="margin: 0;"> <span id="LC2291" class="line" lang="haskell">  <span class="kr" style="font-weight: 600;">where</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="2280" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2280

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<td class="diff-line-num new_line" data-linenumber="2292" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2292

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<pre style="margin: 0;"> <span id="LC2292" class="line" lang="haskell">    <span class="n" style="color: #333;">ty</span>  <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ctev_pred</span> <span class="n" style="color: #333;">ctev</span></span>

</pre>

</td>

</tr>

</table>

<br>

</li>

<li id="d67673f1f07a2cd7b42addb9d5e4bdb29f7a7002">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/609563362994f3a6704308a73779ac0d29c58557...e091141d11228f719a56681736d5c2d75e760407#d67673f1f07a2cd7b42addb9d5e4bdb29f7a7002"><strong>testsuite/tests/typecheck/should_fail/ExpandSynsFail2.stderr</strong></a>

<hr>

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<td class="diff-line-num old_line" data-linenumber="1" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1

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<td class="diff-line-num new_line" data-linenumber="1" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1

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<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC1" class="line" lang="plaintext"></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="2" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2

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<td class="diff-line-num new_line" data-linenumber="2" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2

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<pre style="margin: 0;"> <span id="LC2" class="line" lang="plaintext">ExpandSynsFail2.hs:19:37: error:</span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="3" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

3

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<pre style="margin: 0;">-<span id="LC3" class="line" lang="plaintext">    • Couldn't match type ‘<span class="idiff left right">Foo’ with ‘Bar</span>’</span>

</pre>

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</td>

<td class="diff-line-num new new_line" data-linenumber="3" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

3

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<pre style="margin: 0;">+<span id="LC3" class="line" lang="plaintext">    • Couldn't match type ‘<span class="idiff left right">Int’ with ‘Bool</span>’</span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="4" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

4

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<td class="diff-line-num new_line" data-linenumber="4" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

4

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<pre style="margin: 0;"> <span id="LC4" class="line" lang="plaintext">      Expected type: ST s Foo</span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="5" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

5

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<td class="diff-line-num new_line" data-linenumber="5" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

5

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<pre style="margin: 0;"> <span id="LC5" class="line" lang="plaintext">        Actual type: MyBarST s</span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="6" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

6

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<td class="diff-line-num new_line" data-linenumber="6" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

6

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<pre style="margin: 0;"> <span id="LC6" class="line" lang="plaintext">      Type synonyms expanded:</span>

</pre>

</td>

</tr>

</table>

<br>

</li>

<li id="fb81f990ca209fe548e11dc52c6cf80c0bdf31a9">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/609563362994f3a6704308a73779ac0d29c58557...e091141d11228f719a56681736d5c2d75e760407#fb81f990ca209fe548e11dc52c6cf80c0bdf31a9"><strong>testsuite/tests/typecheck/should_fail/T10619.stderr</strong></a>

<hr>

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1

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<td class="diff-line-num new_line" data-linenumber="1" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1

</td>

<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC1" class="line" lang="plaintext"></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="2" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2

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<td class="diff-line-num new_line" data-linenumber="2" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2

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<pre style="margin: 0;"> <span id="LC2" class="line" lang="plaintext">T10619.hs:9:15: error:</span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="3" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

3

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<td class="diff-line-num new_line old" data-linenumber="3" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC3" class="line" lang="plaintext">    • Couldn't match type ‘<span class="idiff left right">b -> b’ with ‘forall a. a -> a</span>’</span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="4" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="3" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

3

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<pre style="margin: 0;">+<span id="LC3" class="line" lang="plaintext">    • Couldn't match type ‘<span class="idiff left right">forall a. a -> a’ with ‘b -> b</span>’</span>

</pre>

</td>

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<pre style="margin: 0;"> <span id="LC4" class="line" lang="plaintext">      Expected type: (b -> b) -> b -> b</span>

</pre>

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<pre style="margin: 0;"> <span id="LC5" class="line" lang="plaintext">        Actual type: (forall a. a -> a) -> b -> b</span>

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<pre style="margin: 0;"> <span id="LC6" class="line" lang="plaintext">    • In the expression:</span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="20" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="20" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -20,7 +20,7 @@ T10619.hs:9:15: error:</td>

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<pre style="margin: 0;"> <span id="LC20" class="line" lang="plaintext">        foo :: p -> (b -> b) -> b -> b (bound at T10619.hs:8:1)</span>

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<pre style="margin: 0;"> <span id="LC21" class="line" lang="plaintext"></span>

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<td class="diff-line-num old_line" data-linenumber="22" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC22" class="line" lang="plaintext">T10619.hs:14:15: error:</span>

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<pre style="margin: 0;">-<span id="LC23" class="line" lang="plaintext">    • Couldn't match type ‘<span class="idiff left right">b -> b’ with ‘forall a. a -> a</span>’</span>

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<pre style="margin: 0;">+<span id="LC23" class="line" lang="plaintext">    • Couldn't match type ‘<span class="idiff left right">forall a. a -> a’ with ‘b -> b</span>’</span>

</pre>

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<td class="diff-line-num new_line" data-linenumber="24" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC24" class="line" lang="plaintext">      Expected type: (b -> b) -> b -> b</span>

</pre>

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<td class="diff-line-num new_line" data-linenumber="25" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC25" class="line" lang="plaintext">        Actual type: (forall a. a -> a) -> b -> b</span>

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<td class="diff-line-num new_line" data-linenumber="26" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC26" class="line" lang="plaintext">    • In the expression:</span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="40" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="40" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -40,7 +40,7 @@ T10619.hs:14:15: error:</td>

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<pre style="margin: 0;"> <span id="LC40" class="line" lang="plaintext">        bar :: p -> (b -> b) -> b -> b (bound at T10619.hs:12:1)</span>

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<pre style="margin: 0;"> <span id="LC41" class="line" lang="plaintext"></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="42" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<td class="diff-line-num new_line" data-linenumber="42" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC42" class="line" lang="plaintext">T10619.hs:16:13: error:</span>

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<td class="diff-line-num new_line old" data-linenumber="43" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC43" class="line" lang="plaintext">    • Couldn't match type ‘<span class="idiff left right">b -> b’ with ‘forall a. a -> a</span>’</span>

</pre>

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<pre style="margin: 0;">+<span id="LC43" class="line" lang="plaintext">    • Couldn't match type ‘<span class="idiff left right">forall a. a -> a’ with ‘b -> b</span>’</span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="44" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<td class="diff-line-num new_line" data-linenumber="44" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC44" class="line" lang="plaintext">      Expected type: (b -> b) -> b -> b</span>

</pre>

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<td class="diff-line-num new_line" data-linenumber="45" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC45" class="line" lang="plaintext">        Actual type: (forall a. a -> a) -> b -> b</span>

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<td class="diff-line-num new_line" data-linenumber="46" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC46" class="line" lang="plaintext">    • In the expression:</span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="51" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -51,7 +51,7 @@ T10619.hs:16:13: error:</td>

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<pre style="margin: 0;"> <span id="LC51" class="line" lang="plaintext">        baz :: Bool -> (b -> b) -> b -> b (bound at T10619.hs:16:1)</span>

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<pre style="margin: 0;"> <span id="LC52" class="line" lang="plaintext"></span>

</pre>

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<pre style="margin: 0;"> <span id="LC53" class="line" lang="plaintext">T10619.hs:20:14: error:</span>

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<pre style="margin: 0;">-<span id="LC54" class="line" lang="plaintext">    • Couldn't match type ‘<span class="idiff left right">b -> b’ with ‘forall a. a -> a</span>’</span>

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<pre style="margin: 0;">+<span id="LC54" class="line" lang="plaintext">    • Couldn't match type ‘<span class="idiff left right">forall a. a -> a’ with ‘b -> b</span>’</span>

</pre>

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<pre style="margin: 0;"> <span id="LC55" class="line" lang="plaintext">      Expected type: (b -> b) -> b -> b</span>

</pre>

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<pre style="margin: 0;"> <span id="LC56" class="line" lang="plaintext">        Actual type: (forall a. a -> a) -> b -> b</span>

</pre>

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<pre style="margin: 0;"> <span id="LC57" class="line" lang="plaintext">    • In the expression:</span>

</pre>

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<br>

</li>

<li id="c6b64b9d9b59838ea05917fcbc59f41616dce493">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/609563362994f3a6704308a73779ac0d29c58557...e091141d11228f719a56681736d5c2d75e760407#c6b64b9d9b59838ea05917fcbc59f41616dce493"><strong>testsuite/tests/typecheck/should_fail/T12170a.stderr</strong></a>

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<td class="diff-line-num unfold js-unfold new_line" data-linenumber="6" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -6,4 +6,4 @@ T12170a.hs:20:7: error:</td>

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<pre style="margin: 0;"> <span id="LC6" class="line" lang="plaintext">      The type variable ‘m0’ is ambiguous</span>

</pre>

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<pre style="margin: 0;"> <span id="LC7" class="line" lang="plaintext">    • In the first argument of ‘(>>=)’, namely ‘newRef (pure ())’</span>

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<pre style="margin: 0;"> <span id="LC8" class="line" lang="plaintext">      In the expression: newRef (pure ()) >>= join . readRef</span>

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<pre style="margin: 0;">-<span id="LC9" class="line" lang="plaintext">      In an equation for ‘foo’: foo = newRef (pure ()) >>= join . readRef</span></pre>

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<pre style="margin: 0;">+<span id="LC9" class="line" lang="plaintext">      In an equation for ‘foo’: foo = newRef (pure ()) >>= join . readRef</span></pre>

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<td class="line_content match" style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">\ No newline at end of file</td>

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<li id="4c5de4968cdc95ac52e3a556a04a81ac8c2db89b">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/609563362994f3a6704308a73779ac0d29c58557...e091141d11228f719a56681736d5c2d75e760407#4c5de4968cdc95ac52e3a556a04a81ac8c2db89b"><strong>testsuite/tests/typecheck/should_fail/T12785b.stderr</strong></a>

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<pre style="margin: 0;"> <span id="LC1" class="line" lang="plaintext"></span>

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<pre style="margin: 0;"> <span id="LC2" class="line" lang="plaintext">T12785b.hs:29:65: error:</span>

</pre>

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<pre style="margin: 0;">-<span id="LC3" class="line" lang="plaintext">    • Could not deduce: <span class="idiff left right">Payload ('S n) (Payload n s1) ~ s</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="3" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC3" class="line" lang="plaintext">    • Could not deduce: <span class="idiff left right">s ~ Payload ('S n) (Payload n s1)</span></span>

</pre>

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4

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4

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<pre style="margin: 0;"> <span id="LC4" class="line" lang="plaintext">        arising from a use of ‘SBranchX’</span>

</pre>

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<pre style="margin: 0;"> <span id="LC5" class="line" lang="plaintext">      from the context: m ~ 'S n</span>

</pre>

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6

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<pre style="margin: 0;"> <span id="LC6" class="line" lang="plaintext">        bound by a pattern with constructor:</span>

</pre>

</td>

</tr>

</table>

<br>

</li>

<li id="b671f2fd7dc8f6e51be0cc70855981adf90b9ad9">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/609563362994f3a6704308a73779ac0d29c58557...e091141d11228f719a56681736d5c2d75e760407#b671f2fd7dc8f6e51be0cc70855981adf90b9ad9"><strong>testsuite/tests/typecheck/should_fail/T15801.stderr</strong></a>

<hr>

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1

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<td class="diff-line-num new_line" data-linenumber="1" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1

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<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC1" class="line" lang="plaintext"></span>

</pre>

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<pre style="margin: 0;"> <span id="LC2" class="line" lang="plaintext">T15801.hs:52:10: error:</span>

</pre>

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<pre style="margin: 0;">-<span id="LC3" class="line" lang="plaintext">    • Couldn't match representation of type ‘<span class="idiff left right">op_a --></span> b’</span>

</pre>

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4

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<pre style="margin: 0;">-<span id="LC4" class="line" lang="plaintext">                               with that of ‘<span class="idiff left right">UnOp op_a -> UnOp</span> b’</span>

</pre>

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3

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<pre style="margin: 0;">+<span id="LC3" class="line" lang="plaintext">    • Couldn't match representation of type ‘<span class="idiff left right">UnOp op_a -> UnOp</span> b’</span>

</pre>

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<pre style="margin: 0;">+<span id="LC4" class="line" lang="plaintext">                               with that of ‘<span class="idiff left right">op_a --></span> b’</span>

</pre>

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<pre style="margin: 0;"> <span id="LC5" class="line" lang="plaintext">        arising from the superclasses of an instance declaration</span>

</pre>

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6

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6

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<pre style="margin: 0;"> <span id="LC6" class="line" lang="plaintext">    • In the instance declaration for ‘OpRíki (Op (*))’</span></pre>

</td>

</tr>

</table>

<br>

</li>

<li id="d4a71a1c4978a1928de30f417f4f35f84e105912">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/609563362994f3a6704308a73779ac0d29c58557...e091141d11228f719a56681736d5c2d75e760407#d4a71a1c4978a1928de30f417f4f35f84e105912"><strong>testsuite/tests/typecheck/should_fail/T16204c.stderr</strong></a>

<hr>

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1

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1

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<pre style="margin: 0;"> <span id="LC1" class="line" lang="plaintext"></span>

</pre>

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2

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2

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<pre style="margin: 0;"> <span id="LC2" class="line" lang="plaintext">T16204c.hs:16:8: error:</span>

</pre>

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3

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<pre style="margin: 0;">-<span id="LC3" class="line" lang="plaintext">    • Couldn't match kind ‘<span class="idiff left right">*’ with ‘Rep</span>’</span>

</pre>

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3

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<pre style="margin: 0;">+<span id="LC3" class="line" lang="plaintext">    • Couldn't match kind ‘<span class="idiff left right">Rep’ with ‘*</span>’</span>

</pre>

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4

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4

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<pre style="margin: 0;"> <span id="LC4" class="line" lang="plaintext">      When matching types</span>

</pre>

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5

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<pre style="margin: 0;"> <span id="LC5" class="line" lang="plaintext">        a0 :: Rep</span>

</pre>

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6

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<td class="diff-line-num new_line" data-linenumber="6" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

6

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<pre style="margin: 0;"> <span id="LC6" class="line" lang="plaintext">        a :: *</span>

</pre>

</td>

</tr>

</table>

<br>

</li>

<li id="5b2a6f64add59285ce220a54749f611abfc60a66">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/609563362994f3a6704308a73779ac0d29c58557...e091141d11228f719a56681736d5c2d75e760407#5b2a6f64add59285ce220a54749f611abfc60a66"><strong>testsuite/tests/typecheck/should_fail/T1899.stderr</strong></a>

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1

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<td class="diff-line-num new_line" data-linenumber="1" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1

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<pre style="margin: 0;"> <span id="LC1" class="line" lang="plaintext"></span>

</pre>

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<pre style="margin: 0;">-<span id="LC2" class="line" lang="plaintext">T1899.hs:1<span class="idiff left right">4:36</span>: error:</span>

</pre>

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2

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<pre style="margin: 0;">+<span id="LC2" class="line" lang="plaintext">T1899.hs:1<span class="idiff left right">2:13</span>: error:</span>

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3

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3

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<pre style="margin: 0;"> <span id="LC3" class="line" lang="plaintext">    • Couldn't match type ‘a’ with ‘Proposition a0’</span>

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4

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<td class="diff-line-num new_line" data-linenumber="4" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

4

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<pre style="margin: 0;"> <span id="LC4" class="line" lang="plaintext">      ‘a’ is a rigid type variable bound by</span>

</pre>

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5

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5

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<pre style="margin: 0;"> <span id="LC5" class="line" lang="plaintext">        the type signature for:</span>

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6

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6

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<pre style="margin: 0;"> <span id="LC6" class="line" lang="plaintext">          transRHS :: forall a. [a] -> Int -> Constraint a</span>

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7

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7

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<pre style="margin: 0;"> <span id="LC7" class="line" lang="plaintext">        at T1899.hs:9:2-39</span>

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<td class="diff-line-num old old_line" data-linenumber="8" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

8

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<td class="diff-line-num new_line old" data-linenumber="8" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC8" class="line" lang="plaintext">      Expected type: [Proposition a0]</span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="9" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

9

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<td class="diff-line-num new_line old" data-linenumber="8" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC9" class="line" lang="plaintext">        Actual type: [a]</span>

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<td class="diff-line-num old old_line" data-linenumber="10" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

10

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<td class="diff-line-num new_line old" data-linenumber="8" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC10" class="line" lang="plaintext">    • In the first argument of ‘Auxiliary’, namely ‘varSet’</span>

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<td class="diff-line-num old old_line" data-linenumber="11" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

11

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<td class="diff-line-num new_line old" data-linenumber="8" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC11" class="line" lang="plaintext">      In the first argument of ‘Prop’, namely ‘(Auxiliary varSet)’</span>

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<td class="diff-line-num old old_line" data-linenumber="12" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

12

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<td class="diff-line-num new_line old" data-linenumber="8" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC12" class="line" lang="plaintext">      In the expression: Prop (Auxiliary varSet)</span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="13" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="8" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

8

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<pre style="margin: 0;">+<span id="LC8" class="line" lang="plaintext">      Expected type: Constraint a</span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="13" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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9

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<pre style="margin: 0;">+<span id="LC9" class="line" lang="plaintext">        Actual type: Constraint (Proposition a0)</span>

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<td class="diff-line-num new old_line" data-linenumber="13" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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10

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<pre style="margin: 0;">+<span id="LC10" class="line" lang="plaintext">    • In the expression: Formula [[Prop (Auxiliary undefined)]]</span>

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<td class="diff-line-num new old_line" data-linenumber="13" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="11" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

11

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<pre style="margin: 0;">+<span id="LC11" class="line" lang="plaintext">      In the expression:</span>

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<td class="diff-line-num new old_line" data-linenumber="13" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="12" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

12

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<pre style="margin: 0;">+<span id="LC12" class="line" lang="plaintext">        if b < 0 then</span>

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<td class="diff-line-num new old_line" data-linenumber="13" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="13" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

13

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<pre style="margin: 0;">+<span id="LC13" class="line" lang="plaintext">            Formula [[Prop (Auxiliary undefined)]]</span>

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<td class="diff-line-num new old_line" data-linenumber="13" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="14" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

14

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<pre style="margin: 0;">+<span id="LC14" class="line" lang="plaintext">        else</span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="13" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC15" class="line" lang="plaintext">            Formula $ [[Prop (Auxiliary varSet), Prop (Auxiliary varSet)]]</span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="13" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="16" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

16

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<pre style="margin: 0;">+<span id="LC16" class="line" lang="plaintext">      In an equation for ‘transRHS’:</span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="13" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC17" class="line" lang="plaintext">          transRHS varSet b</span>

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<td class="diff-line-num new old_line" data-linenumber="13" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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18

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<pre style="margin: 0;">+<span id="LC18" class="line" lang="plaintext">            = if b < 0 then</span>

</pre>

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19

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<pre style="margin: 0;">+<span id="LC19" class="line" lang="plaintext">                  Formula [[Prop (Auxiliary undefined)]]</span>

</pre>

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20

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<pre style="margin: 0;">+<span id="LC20" class="line" lang="plaintext">              else</span>

</pre>

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21

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<pre style="margin: 0;">+<span id="LC21" class="line" lang="plaintext">                  Formula $ [[Prop (Auxiliary varSet), ....]]</span>

</pre>

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13

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22

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<pre style="margin: 0;"> <span id="LC22" class="line" lang="plaintext">    • Relevant bindings include</span>

</pre>

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14

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23

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<pre style="margin: 0;"> <span id="LC23" class="line" lang="plaintext">        varSet :: [a] (bound at T1899.hs:10:11)</span>

</pre>

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15

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24

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<pre style="margin: 0;"> <span id="LC24" class="line" lang="plaintext">        transRHS :: [a] -> Int -> Constraint a (bound at T1899.hs:10:2)</span></pre>

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<br>

</li>

<li id="89b06e64f533ced521cddc02784368e520c59256">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/609563362994f3a6704308a73779ac0d29c58557...e091141d11228f719a56681736d5c2d75e760407#89b06e64f533ced521cddc02784368e520c59256"><strong>testsuite/tests/typecheck/should_fail/T2714.stderr</strong></a>

<hr>

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1

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<td class="diff-line-num new_line" data-linenumber="1" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1

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<pre style="margin: 0;"> <span id="LC1" class="line" lang="plaintext"></span>

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2

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2

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<pre style="margin: 0;"> <span id="LC2" class="line" lang="plaintext">T2714.hs:8:5: error:</span>

</pre>

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3

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<pre style="margin: 0;">-<span id="LC3" class="line" lang="plaintext">    • Couldn't match type ‘<span class="idiff left right">c’ with ‘f0 (a -> b)</span>’</span>

</pre>

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4

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<pre style="margin: 0;">-<span id="LC4" class="line" lang="plaintext">      ‘<span class="idiff left right">c</span>’ is a rigid type variable bound by</span>

</pre>

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3

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<pre style="margin: 0;">+<span id="LC3" class="line" lang="plaintext">    • Couldn't match type ‘<span class="idiff left right">a’ with ‘f0 b</span>’</span>

</pre>

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4

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<pre style="margin: 0;">+<span id="LC4" class="line" lang="plaintext">      ‘<span class="idiff left right">a</span>’ is a rigid type variable bound by</span>

</pre>

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5

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5

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<pre style="margin: 0;"> <span id="LC5" class="line" lang="plaintext">        the type signature for:</span>

</pre>

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6

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<pre style="margin: 0;">-<span id="LC6" class="line" lang="plaintext">          f :: ((a -> b) -> b) -> forall c. c -> a</span>

</pre>

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7

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<pre style="margin: 0;">-<span id="LC7" class="line" lang="plaintext">        at T2714.hs:<span class="idiff left right">8:1-9</span></span>

</pre>

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6

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<pre style="margin: 0;">+<span id="LC6" class="line" lang="plaintext">          f :: <span class="idiff left right">forall a b. </span>((a -> b) -> b) -> forall c. c -> a</span>

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<td class="diff-line-num new old_line" data-linenumber="8" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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7

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<pre style="margin: 0;">+<span id="LC7" class="line" lang="plaintext">        at T2714.hs:<span class="idiff left right">7:1-42</span></span>

</pre>

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8

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<td class="diff-line-num new_line" data-linenumber="8" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

8

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<pre style="margin: 0;"> <span id="LC8" class="line" lang="plaintext">      Expected type: ((a -> b) -> b) -> c -> a</span>

</pre>

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9

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9

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<pre style="margin: 0;"> <span id="LC9" class="line" lang="plaintext">        Actual type: ((a -> b) -> b) -> f0 (a -> b) -> f0 b</span>

</pre>

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10

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<pre style="margin: 0;"> <span id="LC10" class="line" lang="plaintext">    • In the expression: ffmap</span>

</pre>

</td>

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<br>

</li>

<li id="ebbc212534a0003ce8af29cd19e5e364ef0b3250">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/609563362994f3a6704308a73779ac0d29c58557...e091141d11228f719a56681736d5c2d75e760407#ebbc212534a0003ce8af29cd19e5e364ef0b3250"><strong>testsuite/tests/typecheck/should_fail/T7748a.stderr</strong></a>

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<pre style="margin: 0;"> <span id="LC1" class="line" lang="plaintext"></span>

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<pre style="margin: 0;">-<span id="LC2" class="line" lang="plaintext">T7748a.hs:1<span class="idiff left right">6</span>:24: error:</span>

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<pre style="margin: 0;">+<span id="LC2" class="line" lang="plaintext">T7748a.hs:1<span class="idiff left right">4</span>:24: error:</span>

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<pre style="margin: 0;"> <span id="LC3" class="line" lang="plaintext">    • Couldn't match expected type ‘a’</span>

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<pre style="margin: 0;"> <span id="LC4" class="line" lang="plaintext">                  with actual type ‘Maybe (Maybe (r -> ()))’</span>

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<pre style="margin: 0;"> <span id="LC5" class="line" lang="plaintext">      ‘a’ is a rigid type variable bound by</span>

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<pre style="margin: 0;"> <span id="LC6" class="line" lang="plaintext">        the type signature for:</span>

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<pre style="margin: 0;"> <span id="LC7" class="line" lang="plaintext">          test :: forall a r. a -> r -> ()</span>

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<pre style="margin: 0;"> <span id="LC8" class="line" lang="plaintext">        at T7748a.hs:11:1-20</span>

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<pre style="margin: 0;">-<span id="LC9" class="line" lang="plaintext">    • In the pattern: <span class="idiff left right">Just (Just p)</span></span>

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<pre style="margin: 0;">-<span id="LC10" class="line" lang="plaintext">      In a case alternative: <span class="idiff left right">Just (Just p) -> p</span></span>

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<pre style="margin: 0;">+<span id="LC9" class="line" lang="plaintext">    • In the pattern: <span class="idiff left right">Nothing</span></span>

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<pre style="margin: 0;">+<span id="LC10" class="line" lang="plaintext">      In a case alternative: <span class="idiff left right">Nothing -> const ()</span></span>

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<pre style="margin: 0;"> <span id="LC11" class="line" lang="plaintext">      In the expression:</span>

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<pre style="margin: 0;"> <span id="LC12" class="line" lang="plaintext">        case zd of</span>

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<pre style="margin: 0;"> <span id="LC13" class="line" lang="plaintext">          Nothing -> const ()</span>

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</li>

<li id="b166026a124e4ed0cfeb367ad0745c803ab612ff">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/609563362994f3a6704308a73779ac0d29c58557...e091141d11228f719a56681736d5c2d75e760407#b166026a124e4ed0cfeb367ad0745c803ab612ff"><strong>testsuite/tests/typecheck/should_fail/T8450.stderr</strong></a>

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<pre style="margin: 0;"> <span id="LC1" class="line" lang="plaintext"></span>

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<pre style="margin: 0;">-<span id="LC2" class="line" lang="plaintext">T8450.hs:8:<span class="idiff left right">20</span>: error:</span>

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<pre style="margin: 0;">-<span id="LC3" class="line" lang="plaintext">    • Couldn't match <span class="idiff left right">type ‘a’ with ‘Bool</span>’</span>

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<pre style="margin: 0;">+<span id="LC2" class="line" lang="plaintext">T8450.hs:8:<span class="idiff left right">7</span>: error:</span>

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3

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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC3" class="line" lang="plaintext">    • Couldn't match <span class="idiff left right">expected type ‘a’ with actual type ‘()</span>’</span>

</pre>

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4

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4

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<pre style="margin: 0;"> <span id="LC4" class="line" lang="plaintext">      ‘a’ is a rigid type variable bound by</span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="5" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

5

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5

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<pre style="margin: 0;"> <span id="LC5" class="line" lang="plaintext">        the type signature for:</span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="6" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

6

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6

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<pre style="margin: 0;"> <span id="LC6" class="line" lang="plaintext">          run :: forall a. a</span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="7" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

7

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<td class="diff-line-num new_line" data-linenumber="7" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

7

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<pre style="margin: 0;"> <span id="LC7" class="line" lang="plaintext">        at T8450.hs:7:1-18</span>

</pre>

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8

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<td class="diff-line-num new_line old" data-linenumber="8" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC8" class="line" lang="plaintext">      Expected type: Either Bool ()</span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="9" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

9

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<td class="diff-line-num new_line old" data-linenumber="8" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC9" class="line" lang="plaintext">        Actual type: Either a ()</span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="10" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

10

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<td class="diff-line-num new_line old" data-linenumber="8" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC10" class="line" lang="plaintext">    • In the second argument of ‘($)’, namely</span>

</pre>

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11

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<td class="diff-line-num new_line old" data-linenumber="8" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC11" class="line" lang="plaintext">        ‘(undefined :: Either a ())’</span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="12" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

12

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<td class="diff-line-num new_line old" data-linenumber="8" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC12" class="line" lang="plaintext">      In the expression: runEffect $ (undefined :: Either a ())</span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="13" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="8" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

8

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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC8" class="line" lang="plaintext">    • In the expression: runEffect $ (undefined :: Either a ())</span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="13" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

13

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9

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<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC9" class="line" lang="plaintext">      In an equation for ‘run’:</span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="14" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

14

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10

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<pre style="margin: 0;"> <span id="LC10" class="line" lang="plaintext">          run = runEffect $ (undefined :: Either a ())</span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="15" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

15

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11

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<pre style="margin: 0;"> <span id="LC11" class="line" lang="plaintext">    • Relevant bindings include run :: a (bound at T8450.hs:8:1)</span></pre>

</td>

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</table>

<br>

</li>

<li id="78345270cb5b85711bdcb2e8b36f20d5641fa1dc">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/609563362994f3a6704308a73779ac0d29c58557...e091141d11228f719a56681736d5c2d75e760407#78345270cb5b85711bdcb2e8b36f20d5641fa1dc"><strong>testsuite/tests/typecheck/should_fail/tcfail201.stderr</strong></a>

<hr>

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<td class="diff-line-num old_line" data-linenumber="1" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1

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<td class="diff-line-num new_line" data-linenumber="1" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1

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<pre style="margin: 0;"> <span id="LC1" class="line" lang="plaintext"></span>

</pre>

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2

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<td class="diff-line-num new_line old" data-linenumber="2" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC2" class="line" lang="plaintext">tcfail201.hs:17:<span class="idiff left right">56</span>: error:</span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="3" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

3

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<td class="diff-line-num new_line old" data-linenumber="2" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC3" class="line" lang="plaintext">    • Couldn't match <span class="idiff left right">type ‘a’ with</span> ‘HsDoc id0’</span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="4" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="2" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

2

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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC2" class="line" lang="plaintext">tcfail201.hs:17:<span class="idiff left right">27</span>: error:</span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="4" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="3" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

3

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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC3" class="line" lang="plaintext">    • Couldn't match <span class="idiff left right">expected type ‘a’ with actual type</span> ‘HsDoc id0’</span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="4" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

4

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<td class="diff-line-num new_line" data-linenumber="4" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

4

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<pre style="margin: 0;"> <span id="LC4" class="line" lang="plaintext">      ‘a’ is a rigid type variable bound by</span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="5" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

5

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<td class="diff-line-num new_line" data-linenumber="5" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

5

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<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC5" class="line" lang="plaintext">        the type signature for:</span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="6" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

6

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<td class="diff-line-num new_line" data-linenumber="6" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

6

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<pre style="margin: 0;"> <span id="LC6" class="line" lang="plaintext">          gfoldl' :: forall (c :: * -> *) a.</span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="7" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

7

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<td class="diff-line-num new_line" data-linenumber="7" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

7

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<pre style="margin: 0;"> <span id="LC7" class="line" lang="plaintext">                     (forall a1 b. c (a1 -> b) -> a1 -> c b)</span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="8" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

8

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<td class="diff-line-num new_line" data-linenumber="8" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

8

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<pre style="margin: 0;"> <span id="LC8" class="line" lang="plaintext">                     -> (forall g. g -> c g) -> a -> c a</span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="9" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

9

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<td class="diff-line-num new_line" data-linenumber="9" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

9

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<pre style="margin: 0;"> <span id="LC9" class="line" lang="plaintext">        at tcfail201.hs:15:1-85</span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="10" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

10

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<td class="diff-line-num new_line old" data-linenumber="10" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC10" class="line" lang="plaintext">      Expected type: c a</span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="11" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

11

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<td class="diff-line-num new_line old" data-linenumber="10" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC11" class="line" lang="plaintext">        Actual type: c (HsDoc id0)</span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="12" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

12

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<td class="diff-line-num new_line old" data-linenumber="10" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC12" class="line" lang="plaintext">    • In the expression: z DocEmpty</span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="13" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="10" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

10

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<pre style="margin: 0;">+<span id="LC10" class="line" lang="plaintext">    • In the pattern: DocEmpty</span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="13" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

13

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<td class="diff-line-num new_line" data-linenumber="11" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

11

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<pre style="margin: 0;"> <span id="LC11" class="line" lang="plaintext">      In a case alternative: DocEmpty -> z DocEmpty</span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="14" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

14

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<td class="diff-line-num new_line" data-linenumber="12" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

12

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<pre style="margin: 0;"> <span id="LC12" class="line" lang="plaintext">      In the expression: case hsDoc of { DocEmpty -> z DocEmpty }</span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="15" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

15

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<td class="diff-line-num new_line" data-linenumber="13" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

13

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<pre style="margin: 0;"> <span id="LC13" class="line" lang="plaintext">    • Relevant bindings include</span>

</pre>

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