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<h3>
Ben Gamari pushed to branch wip/boxed-rep
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/7b1da9148362b9365b6db635b998910847e9b3f1">7b1da914</a></strong>
<div>
<span>by Andrew Martin</span>
<i>at 2020-11-12T20:15:53-05:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Fix broken tests
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/39caf4f1edde204edd323596ba2b2b2890dce093">39caf4f1</a></strong>
<div>
<span>by Andrew Martin</span>
<i>at 2020-11-12T20:18:45-05:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Remove incomplete comment
</pre>
</li>
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<h4>3 changed files:</h4>
<ul>
<li class="file-stats">
<a href="#786588e27bcbc2a8360d2d0d3b2ce1d075797ffb">
libraries/base/Data/Typeable/Internal.hs
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<li class="file-stats">
<a href="#9de9b4ec5912bd8bfa5c7fdf03a23a09bb21ef46">
testsuite/tests/pmcheck/should_compile/T18249.hs
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<a href="#001a81d0411b16912c8072f2b75c4b8ddaf970f3">
testsuite/tests/rts/T8308/T8308.stdout
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<h4>Changes:</h4>
<li id="786588e27bcbc2a8360d2d0d3b2ce1d075797ffb">
<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/fa16578b606480c7782c6bcb0845bae93840d376...39caf4f1edde204edd323596ba2b2b2890dce093#786588e27bcbc2a8360d2d0d3b2ce1d075797ffb"><strong>libraries/base/Data/Typeable/Internal.hs</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -863,17 +863,7 @@ splitApps = go []</td>
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<pre style="margin: 0;"> <span id="LC863" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- even worse! We have to construct several different TyCons by hand</span></span>
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<pre style="margin: 0;"> <span id="LC864" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- so that we can build the fingerprint for TYPE ('BoxedRep 'LiftedRep).</span></span>
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<pre style="margin: 0;"> <span id="LC865" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- If we call `typeRep @('BoxedRep 'LiftedRep)` while trying to compute</span></span>
</pre>
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<pre style="margin: 0;">-<span id="LC866" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- the fingerprint of `TYPE ('BoxedRep 'LiftedRep)`, we get a loop since</span></span>
</pre>
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<pre style="margin: 0;">-<span id="LC867" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- that invocacion of `typeRep` leads to:</span></span>
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<pre style="margin: 0;">-<span id="LC868" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--</span></span>
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<pre style="margin: 0;">-<span id="LC869" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- * fpTYPELiftedRep (starting point)</span></span>
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<pre style="margin: 0;">-<span id="LC870" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- * typeRep @('BoxedRep 'LiftedRep)</span></span>
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<pre style="margin: 0;">-<span id="LC871" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- * mkTrApp (applied to 'BoxedRep and 'LiftedRep, attempts TYPE shortcut)</span></span>
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<pre style="margin: 0;">-<span id="LC872" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- * eqTypeRep (second argument is trTYPE, let's pursue this)</span></span>
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<pre style="margin: 0;">-<span id="LC873" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- * sameTypeRep (second argument is trTYPE)</span></span>
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<pre style="margin: 0;">-<span id="LC874" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- * typeRepFingerprint (argument is trTYPE, matches TrFun case)</span></span>
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<pre style="margin: 0;">-<span id="LC875" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- * Dang, I have to think about this more tomorrow. The</span></span>
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<pre style="margin: 0;">-<span id="LC876" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--   loop is real, but it evades me right now.</span></span>
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<pre style="margin: 0;">+<span id="LC866" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- the fingerprint of `TYPE ('BoxedRep 'LiftedRep)`, we get a loop.</span></span>
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<pre style="margin: 0;"> <span id="LC867" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--</span></span>
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868
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<pre style="margin: 0;"> <span id="LC868" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- The ticket to find a better way to deal with this is</span></span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="879" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
879
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<td class="diff-line-num new_line" data-linenumber="869" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
869
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<pre style="margin: 0;"> <span id="LC869" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- #14480.</span></span>
</pre>
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</li>
<li id="9de9b4ec5912bd8bfa5c7fdf03a23a09bb21ef46">
<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/fa16578b606480c7782c6bcb0845bae93840d376...39caf4f1edde204edd323596ba2b2b2890dce093#9de9b4ec5912bd8bfa5c7fdf03a23a09bb21ef46"><strong>testsuite/tests/pmcheck/should_compile/T18249.hs</strong></a>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="14" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="diff-line-num unfold js-unfold new_line" data-linenumber="14" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -14,7 +14,7 @@ f :: Int# -> Int</td>
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<td class="diff-line-num old_line" data-linenumber="14" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
14
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14
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<pre style="margin: 0;"> <span id="LC14" class="line" lang="haskell"><span class="n" style="color: #333;">f</span> <span class="o" style="font-weight: 600;">!</span><span class="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 class="o" style="font-weight: 600;">=</span> <span class="mi" style="color: #099;">1</span></span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="15" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
15
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<td class="diff-line-num new_line" data-linenumber="15" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
15
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<pre style="margin: 0;"> <span id="LC15" class="line" lang="haskell"><span class="n" style="color: #333;">f</span> <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;">=</span> <span class="mi" style="color: #099;">2</span></span>
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<td class="diff-line-num old_line" data-linenumber="16" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
16
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<td class="diff-line-num new_line" data-linenumber="16" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
16
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<pre style="margin: 0;"> <span id="LC16" class="line" lang="haskell"></span>
</pre>
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<td class="diff-line-num old old_line" data-linenumber="17" 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">
17
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<td class="diff-line-num new_line old" data-linenumber="17" 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="LC17" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">newtype</span> <span class="kt" style="color: #458; font-weight: 600;">UVoid</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TYPE</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left right">'UnliftedRep</span></span> <span class="kr" style="font-weight: 600;">where</span></span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="18" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
</td>
<td class="diff-line-num new new_line" data-linenumber="17" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
17
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<pre style="margin: 0;">+<span id="LC17" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">newtype</span> <span class="kt" style="color: #458; font-weight: 600;">UVoid</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TYPE</span> <span class="p"><span class="idiff left">(</span></span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">'BoxedRep</span></span><span class="idiff"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">'Unlifted</span></span><span class="p"><span class="idiff right">)</span></span> <span class="kr" style="font-weight: 600;">where</span></span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="18" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
18
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<td class="diff-line-num new_line" data-linenumber="18" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
18
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<pre style="margin: 0;"> <span id="LC18" class="line" lang="haskell">  <span class="kt" style="color: #458; font-weight: 600;">UVoid</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">UVoid</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">UVoid</span></span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="19" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
19
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<td class="diff-line-num new_line" data-linenumber="19" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
19
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<pre style="margin: 0;"> <span id="LC19" class="line" lang="haskell"></span>
</pre>
</td>
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<td class="diff-line-num old_line" data-linenumber="20" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
20
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<td class="diff-line-num new_line" data-linenumber="20" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
20
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<pre style="margin: 0;"> <span id="LC20" class="line" lang="haskell"><span class="n" style="color: #333;">g</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">UVoid</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Int</span></span>
</pre>
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<li id="001a81d0411b16912c8072f2b75c4b8ddaf970f3">
<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/fa16578b606480c7782c6bcb0845bae93840d376...39caf4f1edde204edd323596ba2b2b2890dce093#001a81d0411b16912c8072f2b75c4b8ddaf970f3"><strong>testsuite/tests/rts/T8308/T8308.stdout</strong></a>
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1
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<td class="diff-line-num new_line old" data-linenumber="1" 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="LC1" class="line" lang="plaintext"><span class="idiff left right">7</span></span></pre>
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<td class="diff-line-num new old_line" data-linenumber="2" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
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<td class="diff-line-num new new_line" data-linenumber="1" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1
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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">
<pre style="margin: 0;">+<span id="LC1" class="line" lang="plaintext"><span class="idiff left right">1</span></span></pre>
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