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<h3>

Vladislav Zavialov pushed to branch wip/cusk-ext

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/18e5628dfd3641be8204ccb27dadd09c26492d8c">18e5628d</a></strong>

<div>

<span>by Vladislav Zavialov</span>

<i>at 2019-05-10T11:37:02Z</i>

</div>

<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Guard CUSKs behind a language pragma

GHC Proposal #36 describes a transition plan away from CUSKs and to

top-level kind signatures:

1. Introduce a new extension, -XCUSKs, on by default, that detects CUSKs

   as they currently exist.

2. We turn off the -XCUSKs extension in a few releases and remove it

   sometime thereafter.

This patch implements phase 1 of this plan, introducing a new language

extension to control whether CUSKs are enabled. When top-level kind

signatures are implemented, we can transition to phase 2.

</pre>

</li>

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<h4>10 changed files:</h4>

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<li class="file-stats">

<a href="#0db90e3d6e6150a586bbd58f75f250c3c71766f9">

compiler/hsSyn/HsDecls.hs

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<li class="file-stats">

<a href="#11e9bfd841c4163c1919b5e07efc84740e02010f">

compiler/main/DynFlags.hs

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<li class="file-stats">

<a href="#a55612b2faf1041b010514ceb222ddf75c15a326">

compiler/rename/RnSource.hs

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<li class="file-stats">

<a href="#bdfa0cc139f61d1236abc1598c5d684b43c357f9">

compiler/typecheck/TcTyClsDecls.hs

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<a href="#40d93f06cdb95d1c98a6b3832d0153e59839d832">

docs/users_guide/glasgow_exts.rst

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<li class="file-stats">

<a href="#3f7d85c388596f9ef50f1a3e0334bdb67007e969">

libraries/ghc-boot-th/GHC/LanguageExtensions/Type.hs

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<a href="#9f7a74d3512ab004425ec39cbbcb9737e2ecaa82">

testsuite/tests/driver/T4437.hs

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<a href="#b9e86d897a62509b0114d81d5e736630d6f68f43">

testsuite/tests/typecheck/should_fail/all.T

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<a href="#68ccda913b309d695da33c208dd8f997ab9f2ca5">

<span class="new-file">

+

testsuite/tests/typecheck/should_fail/tcfail225.hs

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<a href="#162797a4244a7913f00cfca9682347a25da676fd">

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+

testsuite/tests/typecheck/should_fail/tcfail225.stderr

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<h4>Changes:</h4>

<li id="0db90e3d6e6150a586bbd58f75f250c3c71766f9">

<a href="https://gitlab.haskell.org/ghc/ghc/commit/18e5628dfd3641be8204ccb27dadd09c26492d8c#0db90e3d6e6150a586bbd58f75f250c3c71766f9"><strong>compiler/hsSyn/HsDecls.hs</strong></a>

<hr>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="679" style="width: 35px; color: rgba(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="679" style="width: 35px; color: rgba(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">@@ -679,11 +679,15 @@ countTyClDecls decls</td>

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<pre style="margin: 0;"> <span id="LC679" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;"> <span id="LC680" class="line" lang="haskell"><span class="cd">-- | Does this declaration have a complete, user-supplied kind signature?</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC681" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See Note [CUSKs: complete user-supplied kind signatures]</span></span>

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<pre style="margin: 0;">-<span id="LC682" class="line" lang="haskell"><span class="n" style="color: #333;">hsDeclHasCusk</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TyClDecl</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span></span>

</pre>

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<pre style="margin: 0;">-<span id="LC683" class="line" lang="haskell"><span class="n" style="color: #333;">hsDeclHasCusk</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">FamDecl</span> <span class="p">{</span> <span class="n" style="color: #333;">tcdFam</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">fam_decl</span> <span class="p">})</span></span>

</pre>

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<pre style="margin: 0;">-<span id="LC684" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">famDeclHasCusk</span> <span class="kt" style="color: #458; font-weight: 600;">False</span> <span class="n" style="color: #333;">fam_decl</span></span>

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<pre style="margin: 0;">+<span id="LC682" class="line" lang="haskell"><span class="n" style="color: #333;">hsDeclHasCusk</span></span>

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<pre style="margin: 0;">+<span id="LC683" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span>  <span class="c1" style="color: #998; font-style: italic;">-- True <=> CUSKs are enabled</span></span>

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<pre style="margin: 0;">+<span id="LC684" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyClDecl</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span></span>

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<pre style="margin: 0;">+<span id="LC685" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span></span>

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<pre style="margin: 0;">+<span id="LC686" class="line" lang="haskell"><span class="n" style="color: #333;">hsDeclHasCusk</span> <span class="kt" style="color: #458; font-weight: 600;">False</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>

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<pre style="margin: 0;">+<span id="LC687" class="line" lang="haskell"><span class="n" style="color: #333;">hsDeclHasCusk</span> <span class="n" style="color: #333;">cusks</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">FamDecl</span> <span class="p">{</span> <span class="n" style="color: #333;">tcdFam</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">fam_decl</span> <span class="p">})</span></span>

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<pre style="margin: 0;">+<span id="LC688" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">famDeclHasCusk</span> <span class="n" style="color: #333;">cusks</span> <span class="kt" style="color: #458; font-weight: 600;">False</span> <span class="n" style="color: #333;">fam_decl</span></span>

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<pre style="margin: 0;"> <span id="LC689" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">-- False: this is not: an associated type of a class with no cusk</span></span>

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<pre style="margin: 0;">-<span id="LC686" class="line" lang="haskell"><span class="n" style="color: #333;">hsDeclHasCusk</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">SynDecl</span> <span class="p">{</span> <span class="n" style="color: #333;">tcdTyVars</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tyvars</span><span class="p">,</span> <span class="n" style="color: #333;">tcdRhs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">rhs</span> <span class="p">})</span></span>

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<pre style="margin: 0;">+<span id="LC690" class="line" lang="haskell"><span class="n" style="color: #333;">hsDeclHasCusk</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left">True</span></span><span class="idiff right"> </span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">SynDecl</span> <span class="p">{</span> <span class="n" style="color: #333;">tcdTyVars</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tyvars</span><span class="p">,</span> <span class="n" style="color: #333;">tcdRhs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">rhs</span> <span class="p">})</span></span>

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691

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<pre style="margin: 0;"> <span id="LC691" class="line" lang="haskell">  <span class="c1" style="color: #998; font-style: italic;">-- NB: Keep this synchronized with 'getInitialKind'</span></span>

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688

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<pre style="margin: 0;"> <span id="LC692" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">hsTvbAllKinded</span> <span class="n" style="color: #333;">tyvars</span> <span class="o" style="font-weight: 600;">&&</span> <span class="n" style="color: #333;">rhs_annotated</span> <span class="n" style="color: #333;">rhs</span></span>

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693

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<pre style="margin: 0;"> <span id="LC693" class="line" lang="haskell">  <span class="kr" style="font-weight: 600;">where</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">@@ -691,9 +695,9 @@ hsDeclHasCusk (SynDecl { tcdTyVars = tyvars, tcdRhs = rhs })</td>

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<pre style="margin: 0;"> <span id="LC695" class="line" lang="haskell">      <span class="kt" style="color: #458; font-weight: 600;">HsParTy</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">lty</span>  <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">rhs_annotated</span> <span class="n" style="color: #333;">lty</span></span>

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<pre style="margin: 0;"> <span id="LC696" class="line" lang="haskell">      <span class="kt" style="color: #458; font-weight: 600;">HsKindSig</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="LC697" class="line" lang="haskell">      <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>

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<pre style="margin: 0;">-<span id="LC694" class="line" lang="haskell"><span class="n" style="color: #333;">hsDeclHasCusk</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">DataDecl</span> <span class="p">{</span> <span class="n" style="color: #333;">tcdDExt</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">DataDeclRn</span> <span class="p">{</span> <span class="n" style="color: #333;">tcdDataCusk</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">cusk</span> <span class="p">}})</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">cusk</span></span>

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<pre style="margin: 0;">-<span id="LC695" class="line" lang="haskell"><span class="n" style="color: #333;">hsDeclHasCusk</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">ClassDecl</span> <span class="p">{</span> <span class="n" style="color: #333;">tcdTyVars</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tyvars</span> <span class="p">})</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">hsTvbAllKinded</span> <span class="n" style="color: #333;">tyvars</span></span>

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<pre style="margin: 0;">-<span id="LC696" class="line" lang="haskell"><span class="n" style="color: #333;">hsDeclHasCusk</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">XTyClDecl</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;">panic</span> <span class="s" style="color: #d14;">"hsDeclHasCusk"</span></span>

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<pre style="margin: 0;">+<span id="LC698" class="line" lang="haskell"><span class="n" style="color: #333;">hsDeclHasCusk</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left">True</span></span><span class="idiff right"> </span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">DataDecl</span> <span class="p">{</span> <span class="n" style="color: #333;">tcdDExt</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">DataDeclRn</span> <span class="p">{</span> <span class="n" style="color: #333;">tcdDataCusk</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">cusk</span> <span class="p">}})</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">cusk</span></span>

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<pre style="margin: 0;">+<span id="LC699" class="line" lang="haskell"><span class="n" style="color: #333;">hsDeclHasCusk</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left">True</span></span><span class="idiff right"> </span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">ClassDecl</span> <span class="p">{</span> <span class="n" style="color: #333;">tcdTyVars</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tyvars</span> <span class="p">})</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">hsTvbAllKinded</span> <span class="n" style="color: #333;">tyvars</span></span>

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<pre style="margin: 0;">+<span id="LC700" class="line" lang="haskell"><span class="n" style="color: #333;">hsDeclHasCusk</span> <span class="kr" style="font-weight: 600;"><span class="idiff left">_</span></span><span class="idiff right"> </span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">XTyClDecl</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;">panic</span> <span class="s" style="color: #d14;">"hsDeclHasCusk"</span></span>

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<td class="diff-line-num old_line" data-linenumber="697" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

697

</td>

<td class="diff-line-num new_line" data-linenumber="701" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

701

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<pre style="margin: 0;"> <span id="LC701" class="line" lang="haskell"></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="698" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

698

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<td class="diff-line-num new_line" data-linenumber="702" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

702

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<pre style="margin: 0;"> <span id="LC702" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Pretty-printing TyClDecl</span></span>

</pre>

</td>

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<td class="diff-line-num old_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">

699

</td>

<td class="diff-line-num new_line" data-linenumber="703" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

703

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<pre style="margin: 0;"> <span id="LC703" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- ~~~~~~~~~~~~~~~~~~~~~~~~</span></span>

</pre>

</td>

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<td class="diff-line-num unfold js-unfold 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">...</td>

<td class="diff-line-num unfold js-unfold 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">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -787,6 +791,9 @@ declaration before checking all of the others, supporting polymorphic recursion.</td>

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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

</td>

<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="cm" style="color: #998; font-style: italic;">See https://gitlab.haskell.org/ghc/ghc/wikis/ghc-kinds/kind-inference#proposed-new-strategy</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

</td>

<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="cm" style="color: #998; font-style: italic;">and #9200 for lots of discussion of how we got here.</span></span>

</pre>

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<td class="diff-line-num old_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

</td>

<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>

</pre>

</td>

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<td class="diff-line-num new old_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">

</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="cm" style="color: #998; font-style: italic;">The detection of CUSKs is enabled by the -XCUSKs extension, switched on by default.</span></span>

</pre>

</td>

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<td class="diff-line-num new old_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">

</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="cm" style="color: #998; font-style: italic;">Under -XNoCUSKs, all declarations are treated as if they have no CUSK.</span></span>

</pre>

</td>

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<td class="diff-line-num new old_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">

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

<pre style="margin: 0;">+<span id="LC796" class="line" lang="haskell"></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="790" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

790

</td>

<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="cm" style="color: #998; font-style: italic;">PRINCIPLE:</span></span>

</pre>

</td>

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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

</td>

<td class="diff-line-num new_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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<pre style="margin: 0;"> <span id="LC798" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">  a type declaration has a CUSK iff we could produce a separate kind signature</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

</td>

<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="cm" style="color: #998; font-style: italic;">  for it, just like a type signature for a function,</span></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="1080" style="width: 35px; color: rgba(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="1087" style="width: 35px; color: rgba(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">@@ -1080,11 +1087,13 @@ data FamilyInfo pass</td>

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<td class="diff-line-num old_line" data-linenumber="1080" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1080

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<td class="diff-line-num new_line" data-linenumber="1087" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1087

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<pre style="margin: 0;"> <span id="LC1087" class="line" lang="haskell"></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="1081" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1081

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<td class="diff-line-num new_line" data-linenumber="1088" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1088

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<pre style="margin: 0;"> <span id="LC1088" class="line" lang="haskell"><span class="cd">-- | Does this family declaration have a complete, user-supplied kind signature?</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1082" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1082

</td>

<td class="diff-line-num new_line" data-linenumber="1089" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1089

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<pre style="margin: 0;"> <span id="LC1089" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See Note [CUSKs: complete user-supplied kind signatures]</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="1083" 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">

1083

</td>

<td class="diff-line-num new_line old" data-linenumber="1090" 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="LC1083" class="line" lang="haskell"><span class="n" style="color: #333;">famDeclHasCusk</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span> <span class="c1" style="color: #998; font-style: italic;">-- ^ True <=> this is an associated type family,</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="1084" style="width: 35px; color: rgba(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="1090" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1090

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<pre style="margin: 0;">+<span id="LC1090" class="line" lang="haskell"><span class="n" style="color: #333;">famDeclHasCusk</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span> <span class="c1" style="color: #998; font-style: italic;">-- ^ True <=> CUSKs are enabled</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="1084" style="width: 35px; color: rgba(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="1091" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1091

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<pre style="margin: 0;">+<span id="LC1091" class="line" lang="haskell">               <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span> <span class="c1" style="color: #998; font-style: italic;">-- ^ True <=> this is an associated type family,</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1084" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1084

</td>

<td class="diff-line-num new_line" data-linenumber="1092" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1092

</td>

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<pre style="margin: 0;"> <span id="LC1092" class="line" lang="haskell">                       <span class="c1" style="color: #998; font-style: italic;">--            and the parent class has /no/ CUSK</span></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="1085" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1085

</td>

<td class="diff-line-num new_line" data-linenumber="1093" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1093

</td>

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<pre style="margin: 0;"> <span id="LC1093" class="line" lang="haskell">               <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">FamilyDecl</span> <span class="n" style="color: #333;">pass</span></span>

</pre>

</td>

</tr>

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

<td class="diff-line-num old_line" data-linenumber="1086" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1086

</td>

<td class="diff-line-num new_line" data-linenumber="1094" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1094

</td>

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

<pre style="margin: 0;"> <span id="LC1094" class="line" lang="haskell">               <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Bool</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="1087" 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">

1087

</td>

<td class="diff-line-num new_line old" data-linenumber="1095" 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 noteable_line old" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#fbe9eb">

<pre style="margin: 0;">-<span id="LC1087" class="line" lang="haskell"><span class="n" style="color: #333;">famDeclHasCusk</span> <span class="n" style="color: #333;">assoc_with_no_cusk</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="1088" style="width: 35px; color: rgba(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="1095" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1095

</td>

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

<pre style="margin: 0;">+<span id="LC1095" class="line" lang="haskell"><span class="n" style="color: #333;">famDeclHasCusk</span> <span class="kt" style="color: #458; font-weight: 600;">False</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;">False</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="1088" style="width: 35px; color: rgba(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="1096" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1096

</td>

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<pre style="margin: 0;">+<span id="LC1096" class="line" lang="haskell"><span class="n" style="color: #333;">famDeclHasCusk</span> <span class="kt" style="color: #458; font-weight: 600;">True</span> <span class="n" style="color: #333;">assoc_with_no_cusk</span></span>

</pre>

</td>

</tr>

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

<td class="diff-line-num old_line" data-linenumber="1088" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1088

</td>

<td class="diff-line-num new_line" data-linenumber="1097" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1097

</td>

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<pre style="margin: 0;"> <span id="LC1097" class="line" lang="haskell">               <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">FamilyDecl</span> <span class="p">{</span> <span class="n" style="color: #333;">fdInfo</span>      <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">fam_info</span></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="1089" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1089

</td>

<td class="diff-line-num new_line" data-linenumber="1098" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1098

</td>

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<pre style="margin: 0;"> <span id="LC1098" class="line" lang="haskell">                           <span class="p">,</span> <span class="n" style="color: #333;">fdTyVars</span>    <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tyvars</span></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="1090" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1090

</td>

<td class="diff-line-num new_line" data-linenumber="1099" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1099

</td>

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<pre style="margin: 0;"> <span id="LC1099" class="line" lang="haskell">                           <span class="p">,</span> <span class="n" style="color: #333;">fdResultSig</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> <span class="n" style="color: #333;">resultSig</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="1095" style="width: 35px; color: rgba(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="1104" style="width: 35px; color: rgba(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">@@ -1095,7 +1104,7 @@ famDeclHasCusk assoc_with_no_cusk</td>

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<td class="diff-line-num old_line" data-linenumber="1095" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1095

</td>

<td class="diff-line-num new_line" data-linenumber="1104" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1104

</td>

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<pre style="margin: 0;"> <span id="LC1104" class="line" lang="haskell">            <span class="c1" style="color: #998; font-style: italic;">-- Un-associated open type/data families have CUSKs</span></span>

</pre>

</td>

</tr>

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

<td class="diff-line-num old_line" data-linenumber="1096" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1096

</td>

<td class="diff-line-num new_line" data-linenumber="1105" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1105

</td>

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<pre style="margin: 0;"> <span id="LC1105" class="line" lang="haskell">            <span class="c1" style="color: #998; font-style: italic;">-- Associated type families have CUSKs iff the parent class does</span></span>

</pre>

</td>

</tr>

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

<td class="diff-line-num old_line" data-linenumber="1097" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1097

</td>

<td class="diff-line-num new_line" data-linenumber="1106" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1106

</td>

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

<pre style="margin: 0;"> <span id="LC1106" 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="1098" 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">

1098

</td>

<td class="diff-line-num new_line old" data-linenumber="1107" 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 noteable_line old" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#fbe9eb">

<pre style="margin: 0;">-<span id="LC1098" class="line" lang="haskell"><span class="n" style="color: #333;">famDeclHasCusk</span> <span class="kr" style="font-weight: 600;">_</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">XFamilyDecl</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;">"famDeclHasCusk"</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="1099" style="width: 35px; color: rgba(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="1107" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1107

</td>

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

<pre style="margin: 0;">+<span id="LC1107" class="line" lang="haskell"><span class="n" style="color: #333;">famDeclHasCusk</span> <span class="kr" style="font-weight: 600;">_</span> <span class="kr" style="font-weight: 600;"><span class="idiff left">_</span></span><span class="idiff right"> </span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">XFamilyDecl</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;">"famDeclHasCusk"</span></span>

</pre>

</td>

</tr>

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

<td class="diff-line-num old_line" data-linenumber="1099" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1099

</td>

<td class="diff-line-num new_line" data-linenumber="1108" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1108

</td>

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

<pre style="margin: 0;"> <span id="LC1108" class="line" lang="haskell"></span>

</pre>

</td>

</tr>

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<td class="diff-line-num old_line" data-linenumber="1100" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1100

</td>

<td class="diff-line-num new_line" data-linenumber="1109" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1109

</td>

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<pre style="margin: 0;"> <span id="LC1109" class="line" lang="haskell"><span class="cd">-- | Does this family declaration have user-supplied return kind signature?</span></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="1101" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1101

</td>

<td class="diff-line-num new_line" data-linenumber="1110" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1110

</td>

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<pre style="margin: 0;"> <span id="LC1110" class="line" lang="haskell"><span class="n" style="color: #333;">hasReturnKindSignature</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">FamilyResultSig</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;">Bool</span></span>

</pre>

</td>

</tr>

</table>

<br>

</li>

<li id="11e9bfd841c4163c1919b5e07efc84740e02010f">

<a href="https://gitlab.haskell.org/ghc/ghc/commit/18e5628dfd3641be8204ccb27dadd09c26492d8c#11e9bfd841c4163c1919b5e07efc84740e02010f"><strong>compiler/main/DynFlags.hs</strong></a>

<hr>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="2260" style="width: 35px; color: rgba(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="2260" style="width: 35px; color: rgba(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">@@ -2260,6 +2260,7 @@ languageExtensions (Just Haskell98)</td>

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<td class="diff-line-num old_line" data-linenumber="2260" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2260

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<td class="diff-line-num new_line" data-linenumber="2260" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2260

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<pre style="margin: 0;"> <span id="LC2260" 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;">LangExt</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">ImplicitPrelude</span><span class="p">,</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="2261" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2261

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<td class="diff-line-num new_line" data-linenumber="2261" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2261

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<pre style="margin: 0;"> <span id="LC2261" class="line" lang="haskell">       <span class="c1" style="color: #998; font-style: italic;">-- See Note [When is StarIsType enabled]</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="2262" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2262

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<td class="diff-line-num new_line" data-linenumber="2262" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2262

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<pre style="margin: 0;"> <span id="LC2262" class="line" lang="haskell">       <span class="kt" style="color: #458; font-weight: 600;">LangExt</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">StarIsType</span><span class="p">,</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="2263" style="width: 35px; color: rgba(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="2263" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

2263

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<pre style="margin: 0;">+<span id="LC2263" class="line" lang="haskell">       <span class="kt" style="color: #458; font-weight: 600;">LangExt</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">CUSKs</span><span class="p">,</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="2263" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2263

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<td class="diff-line-num new_line" data-linenumber="2264" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2264

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<pre style="margin: 0;"> <span id="LC2264" class="line" lang="haskell">       <span class="kt" style="color: #458; font-weight: 600;">LangExt</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">MonomorphismRestriction</span><span class="p">,</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="2264" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2264

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<td class="diff-line-num new_line" data-linenumber="2265" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2265

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<pre style="margin: 0;"> <span id="LC2265" class="line" lang="haskell">       <span class="kt" style="color: #458; font-weight: 600;">LangExt</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">NPlusKPatterns</span><span class="p">,</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="2265" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2265

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<td class="diff-line-num new_line" data-linenumber="2266" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2266

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<pre style="margin: 0;"> <span id="LC2266" class="line" lang="haskell">       <span class="kt" style="color: #458; font-weight: 600;">LangExt</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">DatatypeContexts</span><span class="p">,</span></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="2276" style="width: 35px; color: rgba(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="2277" style="width: 35px; color: rgba(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">@@ -2276,6 +2277,7 @@ languageExtensions (Just Haskell2010)</td>

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<td class="diff-line-num old_line" data-linenumber="2276" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2276

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<td class="diff-line-num new_line" data-linenumber="2277" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2277

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<pre style="margin: 0;"> <span id="LC2277" 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;">LangExt</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">ImplicitPrelude</span><span class="p">,</span></span>

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<td class="diff-line-num old_line" data-linenumber="2277" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2277

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<td class="diff-line-num new_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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<pre style="margin: 0;"> <span id="LC2278" class="line" lang="haskell">       <span class="c1" style="color: #998; font-style: italic;">-- See Note [When is StarIsType enabled]</span></span>

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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="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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<pre style="margin: 0;"> <span id="LC2279" class="line" lang="haskell">       <span class="kt" style="color: #458; font-weight: 600;">LangExt</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">StarIsType</span><span class="p">,</span></span>

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<td class="diff-line-num new old_line" data-linenumber="2279" style="width: 35px; color: rgba(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="2280" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

2280

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<pre style="margin: 0;">+<span id="LC2280" class="line" lang="haskell">       <span class="kt" style="color: #458; font-weight: 600;">LangExt</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">CUSKs</span><span class="p">,</span></span>

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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="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">

2281

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<pre style="margin: 0;"> <span id="LC2281" class="line" lang="haskell">       <span class="kt" style="color: #458; font-weight: 600;">LangExt</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">MonomorphismRestriction</span><span class="p">,</span></span>

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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="2282" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2282

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<pre style="margin: 0;"> <span id="LC2282" class="line" lang="haskell">       <span class="kt" style="color: #458; font-weight: 600;">LangExt</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">DatatypeContexts</span><span class="p">,</span></span>

</pre>

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2281

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<td class="diff-line-num new_line" data-linenumber="2283" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2283

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<pre style="margin: 0;"> <span id="LC2283" class="line" lang="haskell">       <span class="kt" style="color: #458; font-weight: 600;">LangExt</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">TraditionalRecordSyntax</span><span class="p">,</span></span>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="4358" style="width: 35px; color: rgba(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="4360" style="width: 35px; color: rgba(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">@@ -4358,6 +4360,7 @@ xFlagsDeps = [</td>

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4358

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<td class="diff-line-num new_line" data-linenumber="4360" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

4360

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<pre style="margin: 0;"> <span id="LC4360" class="line" lang="haskell">  <span class="n" style="color: #333;">flagSpec</span> <span class="s" style="color: #d14;">"BinaryLiterals"</span>                   <span class="kt" style="color: #458; font-weight: 600;">LangExt</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">BinaryLiterals</span><span class="p">,</span></span>

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4359

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<td class="diff-line-num new_line" data-linenumber="4361" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

4361

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<pre style="margin: 0;"> <span id="LC4361" class="line" lang="haskell">  <span class="n" style="color: #333;">flagSpec</span> <span class="s" style="color: #d14;">"CApiFFI"</span>                          <span class="kt" style="color: #458; font-weight: 600;">LangExt</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">CApiFFI</span><span class="p">,</span></span>

</pre>

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4360

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<td class="diff-line-num new_line" data-linenumber="4362" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

4362

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<pre style="margin: 0;"> <span id="LC4362" class="line" lang="haskell">  <span class="n" style="color: #333;">flagSpec</span> <span class="s" style="color: #d14;">"CPP"</span>                              <span class="kt" style="color: #458; font-weight: 600;">LangExt</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">Cpp</span><span class="p">,</span></span>

</pre>

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</td>

<td class="diff-line-num new new_line" data-linenumber="4363" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

4363

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<pre style="margin: 0;">+<span id="LC4363" class="line" lang="haskell">  <span class="n" style="color: #333;">flagSpec</span> <span class="s" style="color: #d14;">"CUSKs"</span>                            <span class="kt" style="color: #458; font-weight: 600;">LangExt</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">CUSKs</span><span class="p">,</span></span>

</pre>

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4361

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<td class="diff-line-num new_line" data-linenumber="4364" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

4364

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<pre style="margin: 0;"> <span id="LC4364" class="line" lang="haskell">  <span class="n" style="color: #333;">flagSpec</span> <span class="s" style="color: #d14;">"ConstrainedClassMethods"</span>          <span class="kt" style="color: #458; font-weight: 600;">LangExt</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">ConstrainedClassMethods</span><span class="p">,</span></span>

</pre>

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4362

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<td class="diff-line-num new_line" data-linenumber="4365" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

4365

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<pre style="margin: 0;"> <span id="LC4365" class="line" lang="haskell">  <span class="n" style="color: #333;">flagSpec</span> <span class="s" style="color: #d14;">"ConstraintKinds"</span>                  <span class="kt" style="color: #458; font-weight: 600;">LangExt</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">ConstraintKinds</span><span class="p">,</span></span>

</pre>

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4366

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<pre style="margin: 0;"> <span id="LC4366" class="line" lang="haskell">  <span class="n" style="color: #333;">flagSpec</span> <span class="s" style="color: #d14;">"DataKinds"</span>                        <span class="kt" style="color: #458; font-weight: 600;">LangExt</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">DataKinds</span><span class="p">,</span></span>

</pre>

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<br>

</li>

<li id="a55612b2faf1041b010514ceb222ddf75c15a326">

<a href="https://gitlab.haskell.org/ghc/ghc/commit/18e5628dfd3641be8204ccb27dadd09c26492d8c#a55612b2faf1041b010514ceb222ddf75c15a326"><strong>compiler/rename/RnSource.hs</strong></a>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="1552" style="width: 35px; color: rgba(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="1552" style="width: 35px; color: rgba(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">@@ -1552,7 +1552,8 @@ rnTyClDecl (DataDecl { tcdLName = tycon, tcdTyVars = tyvars,</td>

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<pre style="margin: 0;"> <span id="LC1552" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">bindHsQTyVars</span> <span class="n" style="color: #333;">doc</span> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span> <span class="n" style="color: #333;">kvs</span> <span class="n" style="color: #333;">tyvars</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;">tyvars'</span> <span class="n" style="color: #333;">no_rhs_kvs</span> <span class="o" style="font-weight: 600;">-></span></span>

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1553

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1553

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<pre style="margin: 0;"> <span id="LC1553" 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;">defn'</span><span class="p">,</span> <span class="n" style="color: #333;">fvs</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rnDataDefn</span> <span class="n" style="color: #333;">doc</span> <span class="n" style="color: #333;">defn</span></span>

</pre>

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1554

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1554

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<pre style="margin: 0;"> <span id="LC1554" class="line" lang="haskell">          <span class="c1" style="color: #998; font-style: italic;">-- See Note [Complete user-supplied kind signatures] in HsDecls</span></span>

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1555

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<pre style="margin: 0;">-<span id="LC1555" class="line" lang="haskell">       <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">cusk</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">hsTvbAllKinded</span> <span class="n" style="color: #333;">tyvars'</span> <span class="o" style="font-weight: 600;">&&</span> <span class="n" style="color: #333;">no_rhs_kvs</span></span>

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<td class="diff-line-num new new_line" data-linenumber="1555" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1555

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<pre style="margin: 0;">+<span id="LC1555" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">cusks</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">xoptM</span> <span class="kt" style="color: #458; font-weight: 600;">LangExt</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">CUSKs</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="1556" style="width: 35px; color: rgba(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="1556" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1556

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<pre style="margin: 0;">+<span id="LC1556" class="line" lang="haskell">       <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">cusk</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">cusks</span> <span class="o" style="font-weight: 600;">&&</span> <span class="n" style="color: #333;">hsTvbAllKinded</span> <span class="n" style="color: #333;">tyvars'</span> <span class="o" style="font-weight: 600;">&&</span> <span class="n" style="color: #333;">no_rhs_kvs</span></span>

</pre>

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1556

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<td class="diff-line-num new_line" data-linenumber="1557" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1557

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<pre style="margin: 0;"> <span id="LC1557" class="line" lang="haskell">             <span class="n" style="color: #333;">rn_info</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">DataDeclRn</span> <span class="p">{</span> <span class="n" style="color: #333;">tcdDataCusk</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">cusk</span></span>

</pre>

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1557

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<td class="diff-line-num new_line" data-linenumber="1558" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1558

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<pre style="margin: 0;"> <span id="LC1558" class="line" lang="haskell">                                  <span class="p">,</span> <span class="n" style="color: #333;">tcdFVs</span>      <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">fvs</span> <span class="p">}</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC1559" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">traceRn</span> <span class="s" style="color: #d14;">"rndata"</span> <span class="p">(</span><span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">tycon</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">cusk</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">no_rhs_kvs</span><span class="p">)</span></span>

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<br>

</li>

<li id="bdfa0cc139f61d1236abc1598c5d684b43c357f9">

<a href="https://gitlab.haskell.org/ghc/ghc/commit/18e5628dfd3641be8204ccb27dadd09c26492d8c#bdfa0cc139f61d1236abc1598c5d684b43c357f9"><strong>compiler/typecheck/TcTyClsDecls.hs</strong></a>

<hr>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="510" style="width: 35px; color: rgba(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="510" style="width: 35px; color: rgba(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">@@ -510,8 +510,9 @@ kcTyClGroup decls</td>

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<pre style="margin: 0;"> <span id="LC510" class="line" lang="haskell">          <span class="c1" style="color: #998; font-style: italic;">--    3. Generalise the inferred kinds</span></span>

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<pre style="margin: 0;"> <span id="LC511" class="line" lang="haskell">          <span class="c1" style="color: #998; font-style: italic;">-- See Note [Kind checking for type and class decls]</span></span>

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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="p">;</span> <span class="n" style="color: #333;">cusks</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">xoptM</span> <span class="kt" style="color: #458; font-weight: 600;">LangExt</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">CUSKs</span></span>

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<pre style="margin: 0;"> <span id="LC514" 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;">cusk_decls</span><span class="p">,</span> <span class="n" style="color: #333;">no_cusk_decls</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num new_line old" data-linenumber="515" 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="LC514" class="line" lang="haskell">                 <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">partition</span> <span class="p">(</span><span class="n" style="color: #333;">hsDeclHasCusk</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">unLoc</span><span class="p">)</span> <span class="n" style="color: #333;">decls</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC515" class="line" lang="haskell">                 <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">partition</span> <span class="p">(</span><span class="n" style="color: #333;">hsDeclHasCusk</span> <span class="n" style="color: #333;"><span class="idiff left">cusks</span></span><span class="idiff right"> </span><span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">unLoc</span><span class="p">)</span> <span class="n" style="color: #333;">decls</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC516" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;"> <span id="LC517" class="line" lang="haskell">        <span class="p">;</span> <span class="n" style="color: #333;">poly_cusk_tcs</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">getInitialKinds</span> <span class="kt" style="color: #458; font-weight: 600;">True</span> <span class="n" style="color: #333;">cusk_decls</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC518" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="1040" style="width: 35px; color: rgba(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="1041" style="width: 35px; color: rgba(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">@@ -1040,10 +1041,11 @@ getInitialKind cusk (FamDecl { tcdFam = decl })</td>

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<pre style="margin: 0;"> <span id="LC1041" class="line" lang="haskell"><span class="n" style="color: #333;">getInitialKind</span> <span class="n" style="color: #333;">cusk</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">SynDecl</span> <span class="p">{</span> <span class="n" style="color: #333;">tcdLName</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">dL</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> <span class="n" style="color: #333;">name</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC1042" class="line" lang="haskell">                             <span class="p">,</span> <span class="n" style="color: #333;">tcdTyVars</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ktvs</span></span>

</pre>

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1043

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<pre style="margin: 0;"> <span id="LC1043" class="line" lang="haskell">                             <span class="p">,</span> <span class="n" style="color: #333;">tcdRhs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">rhs</span> <span class="p">})</span></span>

</pre>

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1043

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<td class="diff-line-num new_line old" data-linenumber="1044" 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="LC1043" 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;">tycon</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">kcLHsQTyVars</span> <span class="n" style="color: #333;">name</span> <span class="kt" style="color: #458; font-weight: 600;">TypeSynonymFlavour</span> <span class="n" style="color: #333;">cusk</span> <span class="n" style="color: #333;">ktvs</span> <span class="o" style="font-weight: 600;">$</span></span>

</pre>

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1044

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<pre style="margin: 0;">+<span id="LC1044" 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;">cusks</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">xoptM</span> <span class="kt" style="color: #458; font-weight: 600;">LangExt</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">CUSKs</span></span>

</pre>

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</td>

<td class="diff-line-num new new_line" data-linenumber="1045" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1045

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<pre style="margin: 0;">+<span id="LC1045" class="line" lang="haskell">        <span class="p">;</span> <span class="n" style="color: #333;">tycon</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">kcLHsQTyVars</span> <span class="n" style="color: #333;">name</span> <span class="kt" style="color: #458; font-weight: 600;">TypeSynonymFlavour</span> <span class="n" style="color: #333;">cusk</span> <span class="n" style="color: #333;">ktvs</span> <span class="o" style="font-weight: 600;">$</span></span>

</pre>

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1044

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<td class="diff-line-num new_line" data-linenumber="1046" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1046

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<pre style="margin: 0;"> <span id="LC1046" class="line" lang="haskell">                   <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">kind_annotation</span> <span class="n" style="color: #333;">rhs</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="1045" 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">

1045

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<td class="diff-line-num new_line old" data-linenumber="1047" 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="LC1045" class="line" lang="haskell">                     <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="n" style="color: #333;">ksig</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">tcLHsKindSig</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">TySynKindCtxt</span> <span class="n" style="color: #333;">name</span><span class="p">)</span> <span class="n" style="color: #333;">ksig</span></span>

</pre>

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<td class="diff-line-num old old_line" 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">

1046

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<td class="diff-line-num new_line old" data-linenumber="1047" 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="LC1046" class="line" lang="haskell">                     <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left">Nothing</span></span><span class="idiff right">  </span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">newMetaKindVar</span></span>

</pre>

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</td>

<td class="diff-line-num new new_line" data-linenumber="1047" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1047

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<pre style="margin: 0;">+<span id="LC1047" class="line" lang="haskell">                     <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="n" style="color: #333;">ksig</span> <span class="o" style="font-weight: 600;"><span class="idiff left">|</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">cusks</span></span><span class="idiff right"> </span><span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">tcLHsKindSig</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">TySynKindCtxt</span> <span class="n" style="color: #333;">name</span><span class="p">)</span> <span class="n" style="color: #333;">ksig</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="1047" style="width: 35px; color: rgba(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="1048" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1048

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<pre style="margin: 0;">+<span id="LC1048" class="line" lang="haskell">                     <span class="kr" style="font-weight: 600;"><span class="idiff left right">_</span></span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">newMetaKindVar</span></span>

</pre>

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1047

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<td class="diff-line-num new_line" data-linenumber="1049" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1049

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<pre style="margin: 0;"> <span id="LC1049" 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;">tycon</span><span class="p">]</span> <span class="p">}</span></span>

</pre>

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1048

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<td class="diff-line-num new_line" data-linenumber="1050" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1050

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<pre style="margin: 0;"> <span id="LC1050" 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="1049" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1049

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<td class="diff-line-num new_line" data-linenumber="1051" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1051

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<pre style="margin: 0;"> <span id="LC1051" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">-- Keep this synchronized with 'hsDeclHasCusk'.</span></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="1074" style="width: 35px; color: rgba(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="1076" style="width: 35px; color: rgba(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">@@ -1074,7 +1076,8 @@ getFamDeclInitialKind parent_cusk mb_parent_tycon</td>

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1074

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<td class="diff-line-num new_line" data-linenumber="1076" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1076

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<pre style="margin: 0;"> <span id="LC1076" class="line" lang="haskell">                     <span class="p">,</span> <span class="n" style="color: #333;">fdTyVars</span>    <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ktvs</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1075" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1075

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<td class="diff-line-num new_line" data-linenumber="1077" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1077

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<pre style="margin: 0;"> <span id="LC1077" class="line" lang="haskell">                     <span class="p">,</span> <span class="n" style="color: #333;">fdResultSig</span> <span class="o" style="font-weight: 600;">=</span> <span class="p">(</span><span class="n" style="color: #333;">dL</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> <span class="n" style="color: #333;">resultSig</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1076" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1076

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<td class="diff-line-num new_line" data-linenumber="1078" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1078

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<pre style="margin: 0;"> <span id="LC1078" class="line" lang="haskell">                     <span class="p">,</span> <span class="n" style="color: #333;">fdInfo</span>      <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">info</span> <span class="p">})</span></span>

</pre>

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1077

</td>

<td class="diff-line-num new_line old" data-linenumber="1079" 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="LC1077" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">kcLHsQTyVars</span> <span class="n" style="color: #333;">name</span> <span class="n" style="color: #333;">flav</span> <span class="n" style="color: #333;">fam_cusk</span> <span class="n" style="color: #333;">ktvs</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="1078" style="width: 35px; color: rgba(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="1079" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1079

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<pre style="margin: 0;">+<span id="LC1079" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">xoptM</span> <span class="kt" style="color: #458; font-weight: 600;">LangExt</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">CUSKs</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;">cusks</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="1078" style="width: 35px; color: rgba(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="1080" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1080

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<pre style="margin: 0;">+<span id="LC1080" class="line" lang="haskell">    <span class="n" style="color: #333;">kcLHsQTyVars</span> <span class="n" style="color: #333;">name</span> <span class="n" style="color: #333;">flav</span> <span class="p">(</span><span class="n" style="color: #333;">fam_cusk</span> <span class="n" style="color: #333;">cusks</span><span class="p">)</span> <span class="n" style="color: #333;">ktvs</span> <span class="o" style="font-weight: 600;">$</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1078" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1078

</td>

<td class="diff-line-num new_line" data-linenumber="1081" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1081

</td>

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<pre style="margin: 0;"> <span id="LC1081" class="line" lang="haskell">    <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">resultSig</span> <span class="kr" style="font-weight: 600;">of</span></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="1079" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1079

</td>

<td class="diff-line-num new_line" data-linenumber="1082" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1082

</td>

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<pre style="margin: 0;"> <span id="LC1082" class="line" lang="haskell">      <span class="kt" style="color: #458; font-weight: 600;">KindSig</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">ki</span>                              <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">tcLHsKindSig</span> <span class="n" style="color: #333;">ctxt</span> <span class="n" style="color: #333;">ki</span></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="1080" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1080

</td>

<td class="diff-line-num new_line" data-linenumber="1083" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1083

</td>

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<pre style="margin: 0;"> <span id="LC1083" class="line" lang="haskell">      <span class="kt" style="color: #458; font-weight: 600;">TyVarSig</span> <span class="kr" style="font-weight: 600;">_</span> <span class="p">(</span><span class="n" style="color: #333;">dL</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> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">KindedTyVar</span> <span class="kr" style="font-weight: 600;">_</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">ki</span><span class="p">))</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">tcLHsKindSig</span> <span class="n" style="color: #333;">ctxt</span> <span class="n" style="color: #333;">ki</span></span>

</pre>

</td>

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

<td class="diff-line-num unfold js-unfold old_line" data-linenumber="1085" style="width: 35px; color: rgba(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="1088" style="width: 35px; color: rgba(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">@@ -1085,7 +1088,7 @@ getFamDeclInitialKind parent_cusk mb_parent_tycon</td>

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<td class="diff-line-num old_line" data-linenumber="1085" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1085

</td>

<td class="diff-line-num new_line" data-linenumber="1088" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1088

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<pre style="margin: 0;"> <span id="LC1088" 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;">newMetaKindVar</span></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="1086" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1086

</td>

<td class="diff-line-num new_line" data-linenumber="1089" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1089

</td>

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<pre style="margin: 0;"> <span id="LC1089" 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 old_line" data-linenumber="1087" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1087

</td>

<td class="diff-line-num new_line" data-linenumber="1090" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1090

</td>

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<pre style="margin: 0;"> <span id="LC1090" class="line" lang="haskell">    <span class="n" style="color: #333;">assoc_with_no_cusk</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">isJust</span> <span class="n" style="color: #333;">mb_parent_tycon</span> <span class="o" style="font-weight: 600;">&&</span> <span class="n" style="color: #333;">not</span> <span class="n" style="color: #333;">parent_cusk</span></span>

</pre>

</td>

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

<td class="diff-line-num old old_line" data-linenumber="1088" 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">

1088

</td>

<td class="diff-line-num new_line old" data-linenumber="1091" 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="LC1088" class="line" lang="haskell">    <span class="n" style="color: #333;">fam_cusk</span> <span class="o" style="font-weight: 600;"><span class="idiff left">=</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">famDeclHasCusk</span></span> <span class="n" style="color: #333;">assoc_with_no_cusk</span> <span class="n" style="color: #333;">decl</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="1089" style="width: 35px; color: rgba(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="1091" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

1091

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<pre style="margin: 0;">+<span id="LC1091" class="line" lang="haskell">    <span class="n" style="color: #333;">fam_cusk</span> <span class="n" style="color: #333;"><span class="idiff left">cusks</span></span><span class="idiff"> </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">famDeclHasCusk</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">cusks</span></span> <span class="n" style="color: #333;">assoc_with_no_cusk</span> <span class="n" style="color: #333;">decl</span></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="1089" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1089

</td>

<td class="diff-line-num new_line" data-linenumber="1092" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1092

</td>

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

<pre style="margin: 0;"> <span id="LC1092" class="line" lang="haskell">    <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;">info</span> <span class="kr" style="font-weight: 600;">of</span></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="1090" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1090

</td>

<td class="diff-line-num new_line" data-linenumber="1093" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1093

</td>

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

<pre style="margin: 0;"> <span id="LC1093" class="line" lang="haskell">      <span class="kt" style="color: #458; font-weight: 600;">DataFamily</span>         <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">DataFamilyFlavour</span> <span class="n" style="color: #333;">mb_parent_tycon</span></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="1091" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1091

</td>

<td class="diff-line-num new_line" data-linenumber="1094" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

1094

</td>

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

<pre style="margin: 0;"> <span id="LC1094" class="line" lang="haskell">      <span class="kt" style="color: #458; font-weight: 600;">OpenTypeFamily</span>     <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">OpenTypeFamilyFlavour</span> <span class="n" style="color: #333;">mb_parent_tycon</span></span>

</pre>

</td>

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<br>

</li>

<li id="40d93f06cdb95d1c98a6b3832d0153e59839d832">

<a href="https://gitlab.haskell.org/ghc/ghc/commit/18e5628dfd3641be8204ccb27dadd09c26492d8c#40d93f06cdb95d1c98a6b3832d0153e59839d832"><strong>docs/users_guide/glasgow_exts.rst</strong></a>

<hr>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="9012" style="width: 35px; color: rgba(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="9012" style="width: 35px; color: rgba(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">@@ -9012,6 +9012,11 @@ do so.</td>

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9012

</td>

<td class="diff-line-num new_line" data-linenumber="9012" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

9012

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<pre style="margin: 0;"> <span id="LC9012" class="line" lang="mosel"><span class="s2" style="color: #d14;">Complete user-supplied kind signatures and polymorphic recursion</span></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="9013" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

9013

</td>

<td class="diff-line-num new_line" data-linenumber="9013" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

9013

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<pre style="margin: 0;"> <span id="LC9013" class="line" lang="mosel"><span class="s2" style="color: #d14;">----------------------------------------------------------------</span></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="9014" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

9014

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<td class="diff-line-num new_line" data-linenumber="9014" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

9014

</td>

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<pre style="margin: 0;"> <span id="LC9014" class="line" lang="mosel"></span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="9015" style="width: 35px; color: rgba(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="9015" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

9015

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<pre style="margin: 0;">+<span id="LC9015" class="line" lang="mosel"><span class="s2" style="color: #d14;">.. extension:: CUSKs</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="9016" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

9016

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<pre style="margin: 0;">+<span id="LC9016" class="line" lang="mosel"><span class="s2" style="color: #d14;">    :shortdesc: Enable detection of complete user-supplied kind signatures.</span></span>

</pre>

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</td>

<td class="diff-line-num new new_line" data-linenumber="9017" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

9017

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<pre style="margin: 0;">+<span id="LC9017" class="line" lang="mosel"></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="9015" style="width: 35px; color: rgba(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="9018" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

9018

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<pre style="margin: 0;">+<span id="LC9018" class="line" lang="mosel"><span class="s2" style="color: #d14;">    :since: 8.10.1</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="9019" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

9019

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<pre style="margin: 0;">+<span id="LC9019" class="line" lang="mosel"></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="9015" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

9015

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<td class="diff-line-num new_line" data-linenumber="9020" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

9020

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<pre style="margin: 0;"> <span id="LC9020" class="line" lang="mosel"><span class="s2" style="color: #d14;">Just as in type inference, kind inference for recursive types can only</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="9016" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

9016

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<td class="diff-line-num new_line" data-linenumber="9021" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

9021

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<pre style="margin: 0;"> <span id="LC9021" class="line" lang="mosel"><span class="s2" style="color: #d14;">use *monomorphic* recursion. Consider this (contrived) example: ::</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="9017" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

9017

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<td class="diff-line-num new_line" data-linenumber="9022" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

9022

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<pre style="margin: 0;"> <span id="LC9022" class="line" lang="mosel"></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="9110" style="width: 35px; color: rgba(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="9115" style="width: 35px; color: rgba(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">@@ -9110,6 +9115,12 @@ example, consider ::</td>

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<td class="diff-line-num old_line" data-linenumber="9110" style="width: 35px; color: rgba(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="9115" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

9115

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<pre style="margin: 0;"> <span id="LC9115" class="line" lang="mosel"><span class="s2" style="color: #d14;">According to the rules above ``X`` has a CUSK. Yet, the kind of ``k`` is undetermined.</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="9111" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

9111

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<td class="diff-line-num new_line" data-linenumber="9116" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

9116

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<pre style="margin: 0;"> <span id="LC9116" class="line" lang="mosel"><span class="s2" style="color: #d14;">It is thus quantified over, giving ``X`` the kind ``forall k1 (k :: k1). Proxy k -> Type``.</span></span>

</pre>

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9112

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<td class="diff-line-num new_line" data-linenumber="9117" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

9117

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

<pre style="margin: 0;"> <span id="LC9117" class="line" lang="mosel"></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="9113" style="width: 35px; color: rgba(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="9118" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

9118

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<pre style="margin: 0;">+<span id="LC9118" class="line" lang="mosel"><span class="s2" style="color: #d14;">The detection of CUSKs is enabled by the :extension:`CUSKs` flag, which is</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="9119" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

9119

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<pre style="margin: 0;">+<span id="LC9119" class="line" lang="mosel"><span class="s2" style="color: #d14;">switched on by default. When :extension:`CUSKs` is switched off, there is</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="9113" style="width: 35px; color: rgba(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="9120" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

9120

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<pre style="margin: 0;">+<span id="LC9120" class="line" lang="mosel"><span class="s2" style="color: #d14;">currently no way to enable polymorphic recursion in types. In the future, the</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="9113" style="width: 35px; color: rgba(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="9121" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

9121

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<pre style="margin: 0;">+<span id="LC9121" class="line" lang="mosel"><span class="s2" style="color: #d14;">notion of a CUSK will be replaced by top-level kind signatures, this extension</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="9113" style="width: 35px; color: rgba(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="9122" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

9122

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<pre style="margin: 0;">+<span id="LC9122" class="line" lang="mosel"><span class="s2" style="color: #d14;">turned off by default, and then removed.</span></span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="9113" style="width: 35px; color: rgba(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="9123" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

9123

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<pre style="margin: 0;">+<span id="LC9123" class="line" lang="mosel"></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="9113" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

9113

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<td class="diff-line-num new_line" data-linenumber="9124" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

9124

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<pre style="margin: 0;"> <span id="LC9124" class="line" lang="mosel"><span class="s2" style="color: #d14;">Kind inference in closed type families</span></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="9114" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

9114

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<td class="diff-line-num new_line" data-linenumber="9125" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

9125

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<pre style="margin: 0;"> <span id="LC9125" class="line" lang="mosel"><span class="s2" style="color: #d14;">--------------------------------------</span></span>

</pre>

</td>

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9115

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9126

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<pre style="margin: 0;"> <span id="LC9126" class="line" lang="mosel"></span>

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<li id="3f7d85c388596f9ef50f1a3e0334bdb67007e969">

<a href="https://gitlab.haskell.org/ghc/ghc/commit/18e5628dfd3641be8204ccb27dadd09c26492d8c#3f7d85c388596f9ef50f1a3e0334bdb67007e969"><strong>libraries/ghc-boot-th/GHC/LanguageExtensions/Type.hs</strong></a>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="140" style="width: 35px; color: rgba(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="140" style="width: 35px; color: rgba(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">@@ -140,4 +140,5 @@ data Extension</td>

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<pre style="margin: 0;"> <span id="LC140" class="line" lang="haskell">   <span class="o" style="font-weight: 600;">|</span> <span class="kt" style="color: #458; font-weight: 600;">QuantifiedConstraints</span></span>

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<pre style="margin: 0;"> <span id="LC141" class="line" lang="haskell">   <span class="o" style="font-weight: 600;">|</span> <span class="kt" style="color: #458; font-weight: 600;">StarIsType</span></span>

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<pre style="margin: 0;"> <span id="LC142" class="line" lang="haskell">   <span class="o" style="font-weight: 600;">|</span> <span class="kt" style="color: #458; font-weight: 600;">ImportQualifiedPost</span></span>

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<td class="diff-line-num new old_line" data-linenumber="143" style="width: 35px; color: rgba(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="LC143" class="line" lang="haskell">   <span class="o" style="font-weight: 600;">|</span> <span class="kt" style="color: #458; font-weight: 600;">CUSKs</span></span>

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<pre style="margin: 0;"> <span id="LC144" class="line" lang="haskell">   <span class="kr" style="font-weight: 600;">deriving</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Eq</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Enum</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Show</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Generic</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Bounded</span><span class="p">)</span></span></pre>

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<li id="9f7a74d3512ab004425ec39cbbcb9737e2ecaa82">

<a href="https://gitlab.haskell.org/ghc/ghc/commit/18e5628dfd3641be8204ccb27dadd09c26492d8c#9f7a74d3512ab004425ec39cbbcb9737e2ecaa82"><strong>testsuite/tests/driver/T4437.hs</strong></a>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="41" style="width: 35px; color: rgba(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="41" style="width: 35px; color: rgba(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">@@ -41,6 +41,7 @@ expectedGhcOnlyExtensions = ["RelaxedLayout",</td>

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41

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<pre style="margin: 0;"> <span id="LC41" class="line" lang="haskell">                             <span class="s" style="color: #d14;">"AlternativeLayoutRuleTransitional"</span><span class="p">,</span></span>

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<pre style="margin: 0;"> <span id="LC42" class="line" lang="haskell">                             <span class="s" style="color: #d14;">"EmptyDataDeriving"</span><span class="p">,</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC43" class="line" lang="haskell">                             <span class="s" style="color: #d14;">"GeneralisedNewtypeDeriving"</span><span class="p">,</span></span>

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<pre style="margin: 0;">+<span id="LC44" class="line" lang="haskell">                             <span class="s" style="color: #d14;">"CUSKs"</span><span class="p">,</span></span>

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<pre style="margin: 0;"> <span id="LC45" class="line" lang="haskell">                             <span class="s" style="color: #d14;">"ImportQualifiedPost"</span><span class="p">]</span></span>

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<pre style="margin: 0;"> <span id="LC46" class="line" lang="haskell"></span>

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<pre style="margin: 0;"> <span id="LC47" class="line" lang="haskell"><span class="n" style="color: #333;">expectedCabalOnlyExtensions</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">String</span><span class="p">]</span></span>

</pre>

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<li id="b9e86d897a62509b0114d81d5e736630d6f68f43">

<a href="https://gitlab.haskell.org/ghc/ghc/commit/18e5628dfd3641be8204ccb27dadd09c26492d8c#b9e86d897a62509b0114d81d5e736630d6f68f43"><strong>testsuite/tests/typecheck/should_fail/all.T</strong></a>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="241" style="width: 35px; color: rgba(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="241" style="width: 35px; color: rgba(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">@@ -241,6 +241,7 @@ test('tcfail217', normal, compile_fail, [''])</td>

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<pre style="margin: 0;"> <span id="LC241" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">(</span><span class="s" style="color: #d14;">'tcfail218'</span><span class="p">,</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile_fail</span><span class="p">,</span> <span class="p">[</span><span class="s" style="color: #d14;">''</span><span class="p">])</span></span>

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<pre style="margin: 0;"> <span id="LC242" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">(</span><span class="s" style="color: #d14;">'tcfail223'</span><span class="p">,</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile_fail</span><span class="p">,</span> <span class="p">[</span><span class="s" style="color: #d14;">''</span><span class="p">])</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC243" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">(</span><span class="s" style="color: #d14;">'tcfail224'</span><span class="p">,</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile_fail</span><span class="p">,</span> <span class="p">[</span><span class="s" style="color: #d14;">''</span><span class="p">])</span></span>

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<pre style="margin: 0;">+<span id="LC244" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">(</span><span class="s" style="color: #d14;">'tcfail225'</span><span class="p">,</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile_fail</span><span class="p">,</span> <span class="p">[</span><span class="s" style="color: #d14;">''</span><span class="p">])</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC245" class="line" lang="perl"></span>

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<pre style="margin: 0;"> <span id="LC246" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">(</span><span class="s" style="color: #d14;">'SilentParametersOverlapping'</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 class="p">[</span><span class="s" style="color: #d14;">''</span><span class="p">])</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC247" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">(</span><span class="s" style="color: #d14;">'FailDueToGivenOverlapping'</span><span class="p">,</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile_fail</span><span class="p">,</span> <span class="p">[</span><span class="s" style="color: #d14;">''</span><span class="p">])</span></span>

</pre>

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<br>

</li>

<li id="68ccda913b309d695da33c208dd8f997ab9f2ca5">

<a href="https://gitlab.haskell.org/ghc/ghc/commit/18e5628dfd3641be8204ccb27dadd09c26492d8c#68ccda913b309d695da33c208dd8f997ab9f2ca5"><strong>testsuite/tests/typecheck/should_fail/tcfail225.hs</strong></a>

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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 PolyKinds, GADTs #-}</span></span>

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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 NoCUSKs #-}</span></span>

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3

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<pre style="margin: 0;">+<span id="LC3" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;">+<span id="LC4" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">module</span> <span class="nn" style="color: #555;">TcFail225</span> <span class="kr" style="font-weight: 600;">where</span></span>

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<pre style="margin: 0;">+<span id="LC5" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;">+<span id="LC6" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Data.Kind</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Type</span><span class="p">)</span></span>

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<pre style="margin: 0;">+<span id="LC7" class="line" lang="haskell"></span>

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<pre style="margin: 0;">+<span id="LC8" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">data</span> <span class="kt" style="color: #458; font-weight: 600;">T</span> <span class="p">(</span><span class="n" style="color: #333;">m</span> <span class="o" style="font-weight: 600;">::</span> <span class="n" style="color: #333;">k</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Type</span><span class="p">)</span> <span class="o" style="font-weight: 600;">::</span> <span class="n" style="color: #333;">k</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>

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<pre style="margin: 0;">+<span id="LC9" class="line" lang="haskell">  <span class="kt" style="color: #458; font-weight: 600;">MkT</span> <span class="o" style="font-weight: 600;">::</span> <span class="n" style="color: #333;">m</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;">T</span> <span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="p">(</span><span class="n" style="color: #333;">m</span> <span class="n" style="color: #333;">a</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">T</span> <span class="n" style="color: #333;">m</span> <span class="n" style="color: #333;">a</span></span></pre>

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<li id="162797a4244a7913f00cfca9682347a25da676fd">

<a href="https://gitlab.haskell.org/ghc/ghc/commit/18e5628dfd3641be8204ccb27dadd09c26492d8c#162797a4244a7913f00cfca9682347a25da676fd"><strong>testsuite/tests/typecheck/should_fail/tcfail225.stderr</strong></a>

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1

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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">tcfail225.hs:9:19: error:</span>

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<pre style="margin: 0;">+<span id="LC3" class="line" lang="plaintext">    • Expected kind ‘k -> *’, but ‘Maybe’ has kind ‘* -> *’</span>

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4

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<pre style="margin: 0;">+<span id="LC4" class="line" lang="plaintext">    • In the first argument of ‘T’, namely ‘Maybe’</span>

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5

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<pre style="margin: 0;">+<span id="LC5" class="line" lang="plaintext">      In the type ‘T Maybe (m a)’</span>

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6

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<pre style="margin: 0;">+<span id="LC6" class="line" lang="plaintext">      In the definition of data constructor ‘MkT’</span></pre>

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