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<h3>
Sebastian Graf pushed to branch wip/T18049
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/d866e11829e223523d526e2bc998d6df22c36a2e">d866e118</a></strong>
<div>
<span>by Sebastian Graf</span>
<i>at 2020-04-27T21:16:16+02:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">PmCheck: Pick up `EvVar`s bound in `HsWrapper`s for long-distance info

`HsWrapper`s introduce evidence bindings through `WpEvLam` and `WpLet`
which the pattern-match coverage checker should be made aware of.

Failing to do so caused #18049, where the resulting impreciseness of
imcompleteness warnings seemingly contradicted with
`-Winaccessible-code`.

The solution is simple: Collect all the evidence binders of an
`HsWrapper` and add it to the ambient `Deltas` before desugaring
the wrapped expression.

Fixes #18049.
</pre>
</li>
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<h4>6 changed files:</h4>
<ul>
<li class="file-stats">
<a href="#65e2067fbb7377818b6cadff0531f44029499948">
compiler/GHC/HsToCore/Binds.hs
</a>
</li>
<li class="file-stats">
<a href="#6bdd5abc649727f2a802bc96ce5c276de19d3726">
compiler/GHC/HsToCore/Expr.hs
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<li class="file-stats">
<a href="#ac0a6473a902628a18b3a470122e5cc1ce09de14">
compiler/GHC/HsToCore/PmCheck.hs
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<li class="file-stats">
<a href="#46e7b59eca287d43c19d0d8902b41f5d04f0d268">
compiler/GHC/Tc/Types/Evidence.hs
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<li class="file-stats">
<a href="#97ec106b0e095be48dc4424f08d16051fa3201f0">
<span class="new-file">
+
testsuite/tests/pmcheck/should_compile/T18049.hs
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<a href="#a52966ece03f9e76a93a2c4ea96b9fb25368723d">
testsuite/tests/pmcheck/should_compile/all.T
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<h4>Changes:</h4>
<li id="65e2067fbb7377818b6cadff0531f44029499948">
<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/d866e11829e223523d526e2bc998d6df22c36a2e#65e2067fbb7377818b6cadff0531f44029499948"><strong>compiler/GHC/HsToCore/Binds.hs</strong></a>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="33" style="width: 35px; color: rgba(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="33" style="width: 35px; color: rgba(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">@@ -33,7 +33,7 @@ import {-# SOURCE #-}   GHC.HsToCore.Match ( matchWrapper )</td>
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<pre style="margin: 0;"> <span id="LC33" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.HsToCore.Monad</span></span>
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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.HsToCore.GuardedRHSs</span></span>
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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.HsToCore.Utils</span></span>
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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.HsToCore.PmCheck</span> <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;"><span class="idiff left">needToRunPmCheck</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff right"> </span><span class="nf" style="color: #900; font-weight: 600;">addTyCsDs</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">checkGuardMatches</span> <span class="p">)</span></span>
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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.HsToCore.PmCheck</span> <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;">addTyCsDs</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">checkGuardMatches</span> <span class="p">)</span></span>
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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.Hs</span>             <span class="c1" style="color: #998; font-style: italic;">-- lots of things</span></span>
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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</span>           <span class="c1" style="color: #998; font-style: italic;">-- lots of things</span></span>
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<td class="diff-line-num unfold js-unfold new_line" data-linenumber="145" style="width: 35px; color: rgba(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">@@ -145,12 +145,20 @@ dsHsBind dflags (VarBind { var_id = var</td>
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<pre style="margin: 0;"> <span id="LC145" class="line" lang="haskell">                          <span class="kr" style="font-weight: 600;">else</span> <span class="kt" style="color: #458; font-weight: 600;">[]</span></span>
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<pre style="margin: 0;"> <span id="LC146" 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;">force_var</span><span class="p">,</span> <span class="p">[</span><span class="n" style="color: #333;">core_bind</span><span class="p">])</span> <span class="p">}</span></span>
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<pre style="margin: 0;">-<span id="LC148" class="line" lang="haskell"><span class="n" style="color: #333;">dsHsBind</span> <span class="n" style="color: #333;">dflags</span> <span class="n" style="color: #333;">b</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">FunBind</span> <span class="p">{</span> <span class="n" style="color: #333;">fun_id</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="kr" style="font-weight: 600;"><span class="idiff left right">_</span></span> <span class="n" style="color: #333;">fun</span></span>
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<pre style="margin: 0;">+<span id="LC148" class="line" lang="haskell"><span class="n" style="color: #333;">dsHsBind</span> <span class="n" style="color: #333;">dflags</span> <span class="n" style="color: #333;">b</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">FunBind</span> <span class="p">{</span> <span class="n" style="color: #333;">fun_id</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="n" style="color: #333;"><span class="idiff left right">loc</span></span> <span class="n" style="color: #333;">fun</span></span>
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<pre style="margin: 0;"> <span id="LC149" class="line" lang="haskell">                           <span class="p">,</span> <span class="n" style="color: #333;">fun_matches</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">matches</span></span>
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<pre style="margin: 0;"> <span id="LC150" class="line" lang="haskell">                           <span class="p">,</span> <span class="n" style="color: #333;">fun_ext</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">co_fn</span></span>
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<pre style="margin: 0;"> <span id="LC151" class="line" lang="haskell">                           <span class="p">,</span> <span class="n" style="color: #333;">fun_tick</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tick</span> <span class="p">})</span></span>
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152
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<pre style="margin: 0;">-<span id="LC152" 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;">args</span><span class="p">,</span> <span class="n" style="color: #333;">body</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">matchWrapper</span></span>
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<pre style="margin: 0;">-<span id="LC153" class="line" lang="haskell">                           <span class="p">(</span><span class="n" style="color: #333;">mkPrefixFunRhs</span> <span class="p">(</span><span class="n" style="color: #333;">noLoc</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">idName</span> <span class="n" style="color: #333;">fun</span><span class="p">))</span></span>
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<pre style="margin: 0;">+<span id="LC152" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span>   <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">args</span><span class="p">,</span> <span class="n" style="color: #333;">body</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">addTyCsDs</span> <span class="kt" style="color: #458; font-weight: 600;">FromSource</span> <span class="p">(</span><span class="n" style="color: #333;">hsWrapDictBinders</span> <span class="n" style="color: #333;">co_fn</span><span class="p">)</span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;">+<span id="LC153" class="line" lang="haskell">                          <span class="c1" style="color: #998; font-style: italic;">-- FromSource might not be accurate (we don't have any</span></span>
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<pre style="margin: 0;">+<span id="LC154" class="line" lang="haskell">                          <span class="c1" style="color: #998; font-style: italic;">-- origin annotations for things in this module), but at</span></span>
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<pre style="margin: 0;">+<span id="LC155" class="line" lang="haskell">                          <span class="c1" style="color: #998; font-style: italic;">-- worst we do superfluous calls to the pattern match</span></span>
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<pre style="margin: 0;">+<span id="LC156" class="line" lang="haskell">                          <span class="c1" style="color: #998; font-style: italic;">-- oracle.</span></span>
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<pre style="margin: 0;">+<span id="LC157" class="line" lang="haskell">                          <span class="c1" style="color: #998; font-style: italic;">-- addTyCsDs: Add type evidence to the refinement type</span></span>
</pre>
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<pre style="margin: 0;">+<span id="LC158" class="line" lang="haskell">                          <span class="c1" style="color: #998; font-style: italic;">--            predicate of the coverage checker</span></span>
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<pre style="margin: 0;">+<span id="LC159" class="line" lang="haskell">                          <span class="c1" style="color: #998; font-style: italic;">-- See Note [Type and Term Equality Propagation] in PmCheck</span></span>
</pre>
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<pre style="margin: 0;">+<span id="LC160" class="line" lang="haskell">                          <span class="n" style="color: #333;">matchWrapper</span></span>
</pre>
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<pre style="margin: 0;">+<span id="LC161" class="line" lang="haskell">                           <span class="p">(</span><span class="n" style="color: #333;">mkPrefixFunRhs</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="n" style="color: #333;">loc</span> <span class="p">(</span><span class="n" style="color: #333;">idName</span> <span class="n" style="color: #333;">fun</span><span class="p">)))</span></span>
</pre>
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<pre style="margin: 0;"> <span id="LC162" class="line" lang="haskell">                           <span class="kt" style="color: #458; font-weight: 600;">Nothing</span> <span class="n" style="color: #333;">matches</span></span>
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<pre style="margin: 0;"> <span id="LC163" class="line" lang="haskell">        <span class="p">;</span> <span class="n" style="color: #333;">core_wrap</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">dsHsWrapper</span> <span class="n" style="color: #333;">co_fn</span></span>
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<pre style="margin: 0;"> <span id="LC164" class="line" lang="haskell">        <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">body'</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mkOptTickBox</span> <span class="n" style="color: #333;">tick</span> <span class="n" style="color: #333;">body</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">@@ -189,15 +197,7 @@ dsHsBind dflags (AbsBinds { abs_tvs = tyvars, abs_ev_vars = dicts</td>
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<pre style="margin: 0;"> <span id="LC197" class="line" lang="haskell">                          <span class="p">,</span> <span class="n" style="color: #333;">abs_exports</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">exports</span></span>
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<pre style="margin: 0;"> <span id="LC198" class="line" lang="haskell">                          <span class="p">,</span> <span class="n" style="color: #333;">abs_ev_binds</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ev_binds</span></span>
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<pre style="margin: 0;"> <span id="LC199" class="line" lang="haskell">                          <span class="p">,</span> <span class="n" style="color: #333;">abs_binds</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">binds</span><span class="p">,</span> <span class="n" style="color: #333;">abs_sig</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">has_sig</span> <span class="p">})</span></span>
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<pre style="margin: 0;">-<span id="LC192" 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;">ds_binds</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">applyWhen</span> <span class="p">(</span><span class="n" style="color: #333;">needToRunPmCheck</span> <span class="n" style="color: #333;">dflags</span> <span class="kt" style="color: #458; font-weight: 600;">FromSource</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC193" class="line" lang="haskell">                               <span class="c1" style="color: #998; font-style: italic;">-- FromSource might not be accurate, but at worst</span></span>
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<pre style="margin: 0;">-<span id="LC194" class="line" lang="haskell">                               <span class="c1" style="color: #998; font-style: italic;">-- we do superfluous calls to the pattern match</span></span>
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<pre style="margin: 0;">-<span id="LC195" class="line" lang="haskell">                               <span class="c1" style="color: #998; font-style: italic;">-- oracle.</span></span>
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<pre style="margin: 0;">-<span id="LC196" class="line" lang="haskell">                               <span class="c1" style="color: #998; font-style: italic;">-- addTyCsDs: push type constraints deeper</span></span>
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<pre style="margin: 0;">-<span id="LC197" class="line" lang="haskell">                               <span class="c1" style="color: #998; font-style: italic;">--            for inner pattern match check</span></span>
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<pre style="margin: 0;">-<span id="LC198" class="line" lang="haskell">                               <span class="c1" style="color: #998; font-style: italic;">-- See Check, Note [Type and Term Equality Propagation]</span></span>
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<pre style="margin: 0;">-<span id="LC199" class="line" lang="haskell">                               <span class="p">(</span><span class="n" style="color: #333;">addTyCsDs</span> <span class="p">(</span><span class="n" style="color: #333;">listToBag</span> <span class="n" style="color: #333;">dicts</span><span class="p">))</span></span>
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<pre style="margin: 0;">-<span id="LC200" class="line" lang="haskell">                               <span class="p">(</span><span class="n" style="color: #333;">dsLHsBinds</span> <span class="n" style="color: #333;">binds</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC200" 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;">ds_binds</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">addTyCsDs</span> <span class="kt" style="color: #458; font-weight: 600;">FromSource</span> <span class="p">(</span><span class="n" style="color: #333;">listToBag</span> <span class="n" style="color: #333;">dicts</span><span class="p">)</span> <span class="p">(</span><span class="n" style="color: #333;">dsLHsBinds</span> <span class="n" style="color: #333;">binds</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC201" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC202" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">ds_ev_binds</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">dsTcEvBinds_s</span> <span class="n" style="color: #333;">ev_binds</span></span>
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<pre style="margin: 0;"> <span id="LC203" class="line" lang="haskell"></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">@@ -206,7 +206,6 @@ dsHsBind dflags (AbsBinds { abs_tvs = tyvars, abs_ev_vars = dicts</td>
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<pre style="margin: 0;"> <span id="LC206" class="line" lang="haskell"></span>
</pre>
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<pre style="margin: 0;"> <span id="LC207" class="line" lang="haskell"><span class="n" style="color: #333;">dsHsBind</span> <span class="kr" style="font-weight: 600;">_</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="n" style="color: #333;">panic</span> <span class="s" style="color: #d14;">"dsHsBind: PatSynBind"</span></span>
</pre>
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<pre style="margin: 0;"> <span id="LC208" class="line" lang="haskell"></span>
</pre>
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<pre style="margin: 0;">-<span id="LC209" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC209" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-----------------------</span></span>
</pre>
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<pre style="margin: 0;"> <span id="LC210" class="line" lang="haskell"><span class="n" style="color: #333;">dsAbsBinds</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">DynFlags</span></span>
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<pre style="margin: 0;"> <span id="LC211" 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;">TyVar</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">EvVar</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">ABExport</span> <span class="kt" style="color: #458; font-weight: 600;">GhcTc</span><span class="p">]</span></span>
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<br>
</li>
<li id="6bdd5abc649727f2a802bc96ce5c276de19d3726">
<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/d866e11829e223523d526e2bc998d6df22c36a2e#6bdd5abc649727f2a802bc96ce5c276de19d3726"><strong>compiler/GHC/HsToCore/Expr.hs</strong></a>
<hr>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="280" style="width: 35px; color: rgba(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="280" style="width: 35px; color: rgba(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">@@ -280,7 +280,13 @@ dsExpr hswrap@(XExpr (HsWrap co_fn e))</td>
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<pre style="margin: 0;"> <span id="LC280" class="line" lang="haskell">                 <span class="kt" style="color: #458; font-weight: 600;">HsConLikeOut</span> <span class="kr" style="font-weight: 600;">_</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">RealDataCon</span> <span class="n" style="color: #333;">dc</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">return</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">varToCoreExpr</span> <span class="p">(</span><span class="n" style="color: #333;">dataConWrapId</span> <span class="n" style="color: #333;">dc</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC281" class="line" lang="haskell">                 <span class="kt" style="color: #458; font-weight: 600;">XExpr</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsWrap</span> <span class="kr" style="font-weight: 600;">_</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;">pprPanic</span> <span class="s" style="color: #d14;">"dsExpr: HsWrap inside HsWrap"</span> <span class="p">(</span><span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">hswrap</span><span class="p">)</span></span>
</pre>
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<pre style="margin: 0;"> <span id="LC282" class="line" lang="haskell">                 <span class="kt" style="color: #458; font-weight: 600;">HsPar</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="n" style="color: #333;">pprPanic</span> <span class="s" style="color: #d14;">"dsExpr: HsPar inside HsWrap"</span> <span class="p">(</span><span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">hswrap</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC283" 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;">dsExpr</span> <span class="n" style="color: #333;">e</span></span>
</pre>
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<td class="diff-line-num new new_line" data-linenumber="283" style="width: 35px; color: rgba(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="LC283" class="line" lang="haskell">                 <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;">-></span> <span class="c1" style="color: #998; font-style: italic;">-- Uncommenting the following line leads to a 300%</span></span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="284" style="width: 35px; color: rgba(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="284" style="width: 35px; color: rgba(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="LC284" class="line" lang="haskell">                      <span class="c1" style="color: #998; font-style: italic;">-- compile-time allocation regression in T3064, see</span></span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="284" style="width: 35px; color: rgba(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="285" style="width: 35px; color: rgba(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="LC285" class="line" lang="haskell">                      <span class="c1" style="color: #998; font-style: italic;">-- !3087. Unless we find a testcase that motivates this</span></span>
</pre>
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<pre style="margin: 0;">+<span id="LC286" class="line" lang="haskell">                      <span class="c1" style="color: #998; font-style: italic;">-- change, I'm not willing to think of a complicated</span></span>
</pre>
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<pre style="margin: 0;">+<span id="LC287" class="line" lang="haskell">                      <span class="c1" style="color: #998; font-style: italic;">-- work-around.</span></span>
</pre>
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<pre style="margin: 0;">+<span id="LC288" class="line" lang="haskell">                      <span class="c1" style="color: #998; font-style: italic;">-- addTyCsDs FromSource (hsWrapDictBinders co_fn) $</span></span>
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<pre style="margin: 0;">+<span id="LC289" class="line" lang="haskell">                      <span class="n" style="color: #333;">dsExpr</span> <span class="n" style="color: #333;">e</span></span>
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<pre style="margin: 0;"> <span id="LC290" class="line" lang="haskell">               <span class="c1" style="color: #998; font-style: italic;">-- See Note [Detecting forced eta expansion]</span></span>
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<pre style="margin: 0;"> <span id="LC291" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">wrap'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">dsHsWrapper</span> <span class="n" style="color: #333;">co_fn</span></span>
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<pre style="margin: 0;"> <span id="LC292" 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>
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</li>
<li id="ac0a6473a902628a18b3a470122e5cc1ce09de14">
<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/d866e11829e223523d526e2bc998d6df22c36a2e#ac0a6473a902628a18b3a470122e5cc1ce09de14"><strong>compiler/GHC/HsToCore/PmCheck.hs</strong></a>
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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">@@ -14,7 +14,7 @@ Pattern Matching Coverage Checking.</td>
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<pre style="margin: 0;"> <span id="LC14" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">module</span> <span class="nn" style="color: #555;">GHC.HsToCore.PmCheck</span> <span class="p">(</span></span>
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<pre style="margin: 0;"> <span id="LC15" class="line" lang="haskell">        <span class="c1" style="color: #998; font-style: italic;">-- Checking and printing</span></span>
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<pre style="margin: 0;"> <span id="LC16" class="line" lang="haskell">        <span class="nf" style="color: #900; font-weight: 600;">checkSingle</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">checkMatches</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">checkGuardMatches</span><span class="p">,</span></span>
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<pre style="margin: 0;">-<span id="LC17" class="line" lang="haskell">        <span class="nf" style="color: #900; font-weight: 600;"><span class="idiff left">needToRunPmCheck</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff right"> </span><span class="nf" style="color: #900; font-weight: 600;">isMatchContextPmChecked</span><span class="p">,</span></span>
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<pre style="margin: 0;">+<span id="LC17" class="line" lang="haskell">        <span class="nf" style="color: #900; font-weight: 600;">isMatchContextPmChecked</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC18" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC19" class="line" lang="haskell">        <span class="c1" style="color: #998; font-style: italic;">-- See Note [Type and Term Equality Propagation]</span></span>
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<pre style="margin: 0;"> <span id="LC20" class="line" lang="haskell">        <span class="nf" style="color: #900; font-weight: 600;">addTyCsDs</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">addScrutTmCs</span></span>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="1043" style="width: 35px; color: rgba(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="1043" style="width: 35px; color: rgba(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">@@ -1043,10 +1043,14 @@ locallyExtendPmDelta ext k = getPmDeltas >>= ext >>= \deltas -> do</td>
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<pre style="margin: 0;"> <span id="LC1043" class="line" lang="haskell">    <span class="kr" style="font-weight: 600;">then</span> <span class="n" style="color: #333;">updPmDeltas</span> <span class="n" style="color: #333;">deltas</span> <span class="n" style="color: #333;">k</span></span>
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<pre style="margin: 0;"> <span id="LC1044" class="line" lang="haskell">    <span class="kr" style="font-weight: 600;">else</span> <span class="n" style="color: #333;">k</span></span>
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<pre style="margin: 0;"> <span id="LC1045" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC1046" class="line" lang="haskell"><span class="cd">-- | Add in-scope type constraints</span></span>
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<pre style="margin: 0;">-<span id="LC1047" class="line" lang="haskell"><span class="n" style="color: #333;">addTyCsDs</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Bag</span> <span class="kt" style="color: #458; font-weight: 600;">EvVar</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">DsM</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;">DsM</span> <span class="n" style="color: #333;">a</span></span>
</pre>
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1048
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<td class="diff-line-num new_line old" data-linenumber="1046" 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="LC1048" class="line" lang="haskell"><span class="n" style="color: #333;">addTyCsDs</span> <span class="n" style="color: #333;">ev_vars</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="1049" 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">
1049
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<td class="diff-line-num new_line old" data-linenumber="1046" 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="LC1049" class="line" lang="haskell">  <span class="n" style="color: #333;">locallyExtendPmDelta</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">deltas</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">addPmCtsDeltas</span> <span class="n" style="color: #333;">deltas</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">PmTyCt</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">evVarPred</span> <span class="o" style="font-weight: 600;"><$></span> <span class="n" style="color: #333;">ev_vars</span><span class="p">))</span></span>
</pre>
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<td class="diff-line-num new new_line" data-linenumber="1046" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1046
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<pre style="margin: 0;">+<span id="LC1046" class="line" lang="haskell"><span class="cd">-- | Add in-scope type constraints if the coverage checker might run and then</span></span>
</pre>
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1047
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<pre style="margin: 0;">+<span id="LC1047" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- run the given action.</span></span>
</pre>
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1048
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<pre style="margin: 0;">+<span id="LC1048" class="line" lang="haskell"><span class="n" style="color: #333;">addTyCsDs</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Origin</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Bag</span> <span class="kt" style="color: #458; font-weight: 600;">EvVar</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">DsM</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;">DsM</span> <span class="n" style="color: #333;">a</span></span>
</pre>
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1049
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<pre style="margin: 0;">+<span id="LC1049" class="line" lang="haskell"><span class="n" style="color: #333;">addTyCsDs</span> <span class="n" style="color: #333;">origin</span> <span class="n" style="color: #333;">ev_vars</span> <span class="n" style="color: #333;">m</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span></span>
</pre>
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1050
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<pre style="margin: 0;">+<span id="LC1050" class="line" lang="haskell">  <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>
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1051
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<pre style="margin: 0;">+<span id="LC1051" class="line" lang="haskell">  <span class="n" style="color: #333;">applyWhen</span> <span class="p">(</span><span class="n" style="color: #333;">needToRunPmCheck</span> <span class="n" style="color: #333;">dflags</span> <span class="n" style="color: #333;">origin</span><span class="p">)</span></span>
</pre>
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1052
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<pre style="margin: 0;">+<span id="LC1052" class="line" lang="haskell">            <span class="p">(</span><span class="n" style="color: #333;">locallyExtendPmDelta</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">deltas</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">addPmCtsDeltas</span> <span class="n" style="color: #333;">deltas</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">PmTyCt</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">evVarPred</span> <span class="o" style="font-weight: 600;"><$></span> <span class="n" style="color: #333;">ev_vars</span><span class="p">)))</span></span>
</pre>
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<td class="diff-line-num new new_line" data-linenumber="1053" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1053
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<pre style="margin: 0;">+<span id="LC1053" class="line" lang="haskell">            <span class="n" style="color: #333;">m</span></span>
</pre>
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1050
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1054
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<pre style="margin: 0;"> <span id="LC1054" class="line" lang="haskell"></span>
</pre>
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1051
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1055
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<pre style="margin: 0;"> <span id="LC1055" class="line" lang="haskell"><span class="cd">-- | Add equalities for the scrutinee to the local 'DsM' environment when</span></span>
</pre>
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1052
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1056
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<pre style="margin: 0;"> <span id="LC1056" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- checking a case expression:</span></span>
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<br>
</li>
<li id="46e7b59eca287d43c19d0d8902b41f5d04f0d268">
<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/d866e11829e223523d526e2bc998d6df22c36a2e#46e7b59eca287d43c19d0d8902b41f5d04f0d268"><strong>compiler/GHC/Tc/Types/Evidence.hs</strong></a>
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<td class="diff-line-num unfold js-unfold new_line" data-linenumber="10" style="width: 35px; color: rgba(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">@@ -10,7 +10,7 @@ module GHC.Tc.Types.Evidence (</td>
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<pre style="margin: 0;"> <span id="LC10" class="line" lang="haskell">  <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;">mkWpTyApps</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">mkWpEvApps</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">mkWpEvVarApps</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">mkWpTyLams</span><span class="p">,</span></span>
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11
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<pre style="margin: 0;"> <span id="LC11" class="line" lang="haskell">  <span class="nf" style="color: #900; font-weight: 600;">mkWpLams</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">mkWpLet</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">mkWpCastN</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">mkWpCastR</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">collectHsWrapBinders</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC12" class="line" lang="haskell">  <span class="nf" style="color: #900; font-weight: 600;">mkWpFun</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">idHsWrapper</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">isIdHsWrapper</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">isErasableHsWrapper</span><span class="p">,</span></span>
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<pre style="margin: 0;">-<span id="LC13" class="line" lang="haskell">  <span class="nf" style="color: #900; font-weight: 600;">pprHsWrapper</span><span class="p">,</span></span>
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<pre style="margin: 0;">+<span id="LC13" class="line" lang="haskell">  <span class="nf" style="color: #900; font-weight: 600;">pprHsWrapper</span><span class="p">,</span><span class="idiff left"> </span><span class="nf" style="color: #900; font-weight: 600;"><span class="idiff">hsWrapDictBinders</span></span><span class="p"><span class="idiff right">,</span></span></span>
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<pre style="margin: 0;"> <span id="LC14" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC15" class="line" lang="haskell">  <span class="c1" style="color: #998; font-style: italic;">-- * Evidence bindings</span></span>
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<pre style="margin: 0;"> <span id="LC16" class="line" lang="haskell">  <span class="kt" style="color: #458; font-weight: 600;">TcEvBinds</span><span class="p">(</span><span class="o" style="font-weight: 600;">..</span><span class="p">),</span> <span class="kt" style="color: #458; font-weight: 600;">EvBindsVar</span><span class="p">(</span><span class="o" style="font-weight: 600;">..</span><span class="p">),</span></span>
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<pre style="margin: 0;"> <span id="LC370" class="line" lang="haskell">    <span class="n" style="color: #333;">go</span> <span class="kt" style="color: #458; font-weight: 600;">WpTyApp</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>
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<pre style="margin: 0;"> <span id="LC371" class="line" lang="haskell">    <span class="n" style="color: #333;">go</span> <span class="kt" style="color: #458; font-weight: 600;">WpLet</span><span class="p">{}</span>                 <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">False</span></span>
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<pre style="margin: 0;"> <span id="LC372" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC373" class="line" lang="haskell"><span class="n" style="color: #333;">hsWrapDictBinders</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">HsWrapper</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Bag</span> <span class="kt" style="color: #458; font-weight: 600;">DictId</span></span>
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<pre style="margin: 0;">+<span id="LC374" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Collects the given dict Ids, bound by the wrapper,</span></span>
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<pre style="margin: 0;">+<span id="LC375" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- that scope over the "hole" in the wrapper</span></span>
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<pre style="margin: 0;">+<span id="LC376" class="line" lang="haskell"><span class="n" style="color: #333;">hsWrapDictBinders</span> <span class="n" style="color: #333;">wrap</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">wrap</span> <span class="n" style="color: #333;">emptyBag</span></span>
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<pre style="margin: 0;">+<span id="LC377" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;">+<span id="LC378" class="line" lang="haskell">   <span class="n" style="color: #333;">go</span> <span class="kt" style="color: #458; font-weight: 600;">WpHole</span> <span class="n" style="color: #333;">acc</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">acc</span></span>
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<pre style="margin: 0;">+<span id="LC379" class="line" lang="haskell">   <span class="n" style="color: #333;">go</span> <span class="p">(</span><span class="n" style="color: #333;">w1</span> <span class="p">`</span><span class="kt" style="color: #458; font-weight: 600;">WpCompose</span><span class="p">`</span> <span class="n" style="color: #333;">w2</span><span class="p">)</span> <span class="n" style="color: #333;">acc</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">w1</span> <span class="p">(</span><span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">w2</span> <span class="n" style="color: #333;">acc</span><span class="p">)</span></span>
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<td class="diff-line-num new new_line" data-linenumber="380" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
380
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<pre style="margin: 0;">+<span id="LC380" class="line" lang="haskell">   <span class="n" style="color: #333;">go</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">WpFun</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">w2</span> <span class="kr" style="font-weight: 600;">_</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">)</span>    <span class="n" style="color: #333;">acc</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">w2</span> <span class="n" style="color: #333;">acc</span></span>
</pre>
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<td class="diff-line-num new new_line" data-linenumber="381" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
381
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<pre style="margin: 0;">+<span id="LC381" class="line" lang="haskell">   <span class="n" style="color: #333;">go</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">WpCast</span> <span class="p">{})</span>         <span class="n" style="color: #333;">acc</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">acc</span></span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="373" style="width: 35px; color: rgba(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="382" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
382
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<pre style="margin: 0;">+<span id="LC382" class="line" lang="haskell">   <span class="n" style="color: #333;">go</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">WpEvLam</span> <span class="n" style="color: #333;">dict_id</span><span class="p">)</span>   <span class="n" style="color: #333;">acc</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">dict_id</span> <span class="p">`</span><span class="n" style="color: #333;">consBag</span><span class="p">`</span> <span class="n" style="color: #333;">acc</span></span>
</pre>
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<td class="diff-line-num new new_line" data-linenumber="383" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
383
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<pre style="margin: 0;">+<span id="LC383" class="line" lang="haskell">   <span class="n" style="color: #333;">go</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">WpEvApp</span> <span class="p">{})</span>        <span class="n" style="color: #333;">acc</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">acc</span></span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="373" style="width: 35px; color: rgba(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="384" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
384
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<pre style="margin: 0;">+<span id="LC384" class="line" lang="haskell">   <span class="n" style="color: #333;">go</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">WpTyLam</span> <span class="p">{})</span>        <span class="n" style="color: #333;">acc</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">acc</span></span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="373" style="width: 35px; color: rgba(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="385" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
385
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<pre style="margin: 0;">+<span id="LC385" class="line" lang="haskell">   <span class="n" style="color: #333;">go</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">WpTyApp</span> <span class="p">{})</span>        <span class="n" style="color: #333;">acc</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">acc</span></span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="373" style="width: 35px; color: rgba(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="386" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
386
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<pre style="margin: 0;">+<span id="LC386" class="line" lang="haskell">   <span class="n" style="color: #333;">go</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">WpLet</span> <span class="n" style="color: #333;">binds</span><span class="p">)</span>       <span class="n" style="color: #333;">acc</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">go_binds</span> <span class="n" style="color: #333;">binds</span> <span class="p">`</span><span class="n" style="color: #333;">unionBags</span><span class="p">`</span> <span class="n" style="color: #333;">acc</span></span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="373" style="width: 35px; color: rgba(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="387" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
387
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<pre style="margin: 0;">+<span id="LC387" class="line" lang="haskell"></span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="373" style="width: 35px; color: rgba(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="388" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
388
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<pre style="margin: 0;">+<span id="LC388" class="line" lang="haskell">   <span class="n" style="color: #333;">go_binds</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">EvBinds</span> <span class="n" style="color: #333;">bs</span><span class="p">)</span>    <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mapBag</span> <span class="n" style="color: #333;">eb_lhs</span> <span class="n" style="color: #333;">bs</span></span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="373" style="width: 35px; color: rgba(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="389" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
389
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<pre style="margin: 0;">+<span id="LC389" class="line" lang="haskell">   <span class="n" style="color: #333;">go_binds</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">TcEvBinds</span> <span class="n" style="color: #333;">ebv</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">pprPanic</span> <span class="s" style="color: #d14;">"hsWrapperDictBinds"</span> <span class="p">(</span><span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">ebv</span><span class="p">)</span></span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="373" style="width: 35px; color: rgba(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="390" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
390
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<pre style="margin: 0;">+<span id="LC390" class="line" lang="haskell">                              <span class="c1" style="color: #998; font-style: italic;">-- Should only be applied post zonking</span></span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="373" style="width: 35px; color: rgba(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="391" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
391
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<pre style="margin: 0;">+<span id="LC391" class="line" lang="haskell"></span>
</pre>
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373
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<td class="diff-line-num new_line" data-linenumber="392" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
392
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<pre style="margin: 0;"> <span id="LC392" class="line" lang="haskell"><span class="n" style="color: #333;">collectHsWrapBinders</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">HsWrapper</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">([</span><span class="kt" style="color: #458; font-weight: 600;">Var</span><span class="p">],</span> <span class="kt" style="color: #458; font-weight: 600;">HsWrapper</span><span class="p">)</span></span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="374" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
374
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<td class="diff-line-num new_line" data-linenumber="393" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
393
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<pre style="margin: 0;"> <span id="LC393" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Collect the outer lambda binders of a HsWrapper,</span></span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="375" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
375
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<td class="diff-line-num new_line" data-linenumber="394" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
394
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<pre style="margin: 0;"> <span id="LC394" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- stopping as soon as you get to a non-lambda binder</span></span>
</pre>
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<br>
</li>
<li id="97ec106b0e095be48dc4424f08d16051fa3201f0">
<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/d866e11829e223523d526e2bc998d6df22c36a2e#97ec106b0e095be48dc4424f08d16051fa3201f0"><strong>testsuite/tests/pmcheck/should_compile/T18049.hs</strong></a>
<hr>
<table class="code white" style="font-family: monospace; font-size: 90%;" bgcolor="#fff" width="100%" cellpadding="0" cellspacing="0">
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<td class="diff-line-num new new_line" data-linenumber="1" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1
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<pre style="margin: 0;">+<span id="LC1" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# LANGUAGE DataKinds #-}</span></span>
</pre>
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<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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<pre style="margin: 0;">+<span id="LC2" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# LANGUAGE KindSignatures #-}</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">
3
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<pre style="margin: 0;">+<span id="LC3" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# LANGUAGE GADTs #-}</span></span>
</pre>
</td>
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</td>
<td class="diff-line-num new new_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">
4
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<pre style="margin: 0;">+<span id="LC4" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# LANGUAGE RankNTypes #-}</span></span>
</pre>
</td>
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<td class="diff-line-num new old_line" data-linenumber="0" style="width: 35px; color: rgba(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="5" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
5
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<pre style="margin: 0;">+<span id="LC5" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# OPTIONS_GHC -Wincomplete-patterns -fforce-recomp #-}</span></span>
</pre>
</td>
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<td class="diff-line-num new old_line" data-linenumber="0" style="width: 35px; color: rgba(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="6" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
6
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<pre style="margin: 0;">+<span id="LC6" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">module</span> <span class="nn" style="color: #555;">Bug</span> <span class="kr" style="font-weight: 600;">where</span></span>
</pre>
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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>
</pre>
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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="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Data.Kind</span></span>
</pre>
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<td class="diff-line-num new new_line" data-linenumber="9" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
9
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<pre style="margin: 0;">+<span id="LC9" class="line" lang="haskell"></span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="0" style="width: 35px; color: rgba(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="haskell"><span class="kr" style="font-weight: 600;">data</span> <span class="kt" style="color: #458; font-weight: 600;">SBool</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Type</span> <span class="kr" style="font-weight: 600;">where</span></span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="0" style="width: 35px; color: rgba(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="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="haskell">  <span class="kt" style="color: #458; font-weight: 600;">SFalse</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">SBool</span> <span class="kt" style="color: #458; font-weight: 600;">False</span></span>
</pre>
</td>
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<td class="diff-line-num new old_line" data-linenumber="0" style="width: 35px; color: rgba(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="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="haskell">  <span class="kt" style="color: #458; font-weight: 600;">STrue</span>  <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">SBool</span> <span class="kt" style="color: #458; font-weight: 600;">True</span></span>
</pre>
</td>
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<td class="diff-line-num new old_line" data-linenumber="0" style="width: 35px; color: rgba(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="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
</td>
<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">
<pre style="margin: 0;">+<span id="LC13" class="line" lang="haskell"></span>
</pre>
</td>
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<td class="diff-line-num new old_line" data-linenumber="0" style="width: 35px; color: rgba(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="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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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">
<pre style="margin: 0;">+<span id="LC14" class="line" lang="haskell"><span class="n" style="color: #333;">f</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">SBool</span> <span class="n" style="color: #333;">b</span></span>
</pre>
</td>
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<td class="diff-line-num new old_line" data-linenumber="0" style="width: 35px; color: rgba(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="15" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
15
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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="LC15" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="n" style="color: #333;">b</span> <span class="o" style="font-weight: 600;">~</span> <span class="kt" style="color: #458; font-weight: 600;">True</span>  <span class="o" style="font-weight: 600;">=></span> <span class="kt" style="color: #458; font-weight: 600;">SBool</span> <span class="n" style="color: #333;">b</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">r</span><span class="p">)</span></span>
</pre>
</td>
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<td class="diff-line-num new old_line" data-linenumber="0" style="width: 35px; color: rgba(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="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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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">
<pre style="margin: 0;">+<span id="LC16" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="n" style="color: #333;">b</span> <span class="o" style="font-weight: 600;">~</span> <span class="kt" style="color: #458; font-weight: 600;">False</span> <span class="o" style="font-weight: 600;">=></span> <span class="kt" style="color: #458; font-weight: 600;">SBool</span> <span class="n" style="color: #333;">b</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">r</span><span class="p">)</span></span>
</pre>
</td>
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<td class="diff-line-num new old_line" data-linenumber="0" style="width: 35px; color: rgba(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="17" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
17
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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="LC17" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">r</span></span>
</pre>
</td>
</tr>
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<td class="diff-line-num new old_line" data-linenumber="0" style="width: 35px; color: rgba(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="18" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
18
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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="LC18" class="line" lang="haskell"><span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">t</span> <span class="n" style="color: #333;">f</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="0" style="width: 35px; color: rgba(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="19" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
19
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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="LC19" class="line" lang="haskell">  <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">x</span> <span class="kr" style="font-weight: 600;">of</span></span>
</pre>
</td>
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<pre style="margin: 0;">+<span id="LC20" class="line" lang="haskell">    <span class="kt" style="color: #458; font-weight: 600;">SFalse</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">x</span></span>
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<pre style="margin: 0;">+<span id="LC21" class="line" lang="haskell">    <span class="kt" style="color: #458; font-weight: 600;">STrue</span>  <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">t</span> <span class="n" style="color: #333;">x</span></span>
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<pre style="margin: 0;">+<span id="LC22" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC23" class="line" lang="haskell"><span class="n" style="color: #333;">g</span> <span class="o" style="font-weight: 600;">::</span> <span class="n" style="color: #333;">forall</span> <span class="n" style="color: #333;">b</span><span class="o" style="font-weight: 600;">.</span> <span class="kt" style="color: #458; font-weight: 600;">SBool</span> <span class="n" style="color: #333;">b</span> <span class="o" style="font-weight: 600;">-></span> <span class="nb" style="color: #0086b3;">()</span></span>
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<pre style="margin: 0;">+<span id="LC24" class="line" lang="haskell"><span class="n" style="color: #333;">g</span> <span class="n" style="color: #333;">x</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">x</span></span>
</pre>
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<pre style="margin: 0;">+<span id="LC25" class="line" lang="haskell">  <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">x'</span> <span class="o" style="font-weight: 600;">-></span></span>
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<pre style="margin: 0;">+<span id="LC26" class="line" lang="haskell">    <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">x'</span> <span class="kr" style="font-weight: 600;">of</span></span>
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<pre style="margin: 0;">+<span id="LC27" class="line" lang="haskell">      <span class="c1" style="color: #998; font-style: italic;">-- SFalse -> ()</span></span>
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<pre style="margin: 0;">+<span id="LC28" class="line" lang="haskell">      <span class="kt" style="color: #458; font-weight: 600;">STrue</span>  <span class="o" style="font-weight: 600;">-></span> <span class="nb" style="color: #0086b3;">()</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC29" class="line" lang="haskell">  <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;">-></span> <span class="nb" style="color: #0086b3;">()</span><span class="p">)</span></span></pre>
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<br>
</li>
<li id="a52966ece03f9e76a93a2c4ea96b9fb25368723d">
<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/d866e11829e223523d526e2bc998d6df22c36a2e#a52966ece03f9e76a93a2c4ea96b9fb25368723d"><strong>testsuite/tests/pmcheck/should_compile/all.T</strong></a>
<hr>
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<td class="diff-line-num unfold js-unfold new_line" data-linenumber="118" style="width: 35px; color: rgba(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">@@ -118,6 +118,8 @@ test('T17977', collect_compiler_stats('bytes allocated',10), compile,</td>
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<pre style="margin: 0;"> <span id="LC118" class="line" lang="perl">     <span class="p">['</span><span class="s1" style="color: #d14;">-fwarn-incomplete-patterns -fwarn-overlapping-patterns</span><span class="p">'])</span></span>
</pre>
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<pre style="margin: 0;"> <span id="LC119" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">T17977b</span><span class="p">',</span> <span class="nv" style="color: #008080;">collect_compiler_stats</span><span class="p">('</span><span class="s1" style="color: #d14;">bytes allocated</span><span class="p">',</span><span class="mi" style="color: #099;">10</span><span class="p">),</span> <span class="nv" style="color: #008080;">compile</span><span class="p">,</span></span>
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<td class="diff-line-num new_line" data-linenumber="120" style="width: 35px; color: rgba(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="LC120" class="line" lang="perl">     <span class="p">['</span><span class="s1" style="color: #d14;">-fwarn-incomplete-patterns -fwarn-overlapping-patterns</span><span class="p">'])</span></span>
</pre>
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<td class="diff-line-num new new_line" data-linenumber="121" style="width: 35px; color: rgba(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="LC121" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">T18049</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile</span><span class="p">,</span></span>
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<td class="diff-line-num new old_line" data-linenumber="121" style="width: 35px; color: rgba(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="122" style="width: 35px; color: rgba(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="LC122" class="line" lang="perl">     <span class="p">['</span><span class="s1" style="color: #d14;">-fwarn-incomplete-patterns -fwarn-overlapping-patterns</span><span class="p">'])</span></span>
</pre>
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<pre style="margin: 0;"> <span id="LC123" class="line" lang="perl"></span>
</pre>
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<td class="diff-line-num new_line" data-linenumber="124" style="width: 35px; color: rgba(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="LC124" class="line" lang="perl"><span class="c1" style="color: #998; font-style: italic;"># Other tests</span></span>
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<td class="diff-line-num old_line" data-linenumber="123" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
123
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<td class="diff-line-num new_line" data-linenumber="125" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
125
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<pre style="margin: 0;"> <span id="LC125" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">pmc001</span><span class="p">',</span> <span class="o" style="font-weight: 600;">[]</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile</span><span class="p">,</span></span>
</pre>
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