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<h3>
Danya Rogozin pushed to branch wip/ghc-281-proposal-visible-foralls-proto
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/3cd657848f0fb70d530cefbd415ca07a7de9c0f8">3cd65784</a></strong>
<div>
<span>by Daniel Rogozin</span>
<i>at 2020-10-19T16:48:07+03:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">fix
</pre>
</li>
</ul>
<h4>1 changed file:</h4>
<ul>
<li class="file-stats">
<a href="#6a1f039ed7725eddef15dd5f4dc318a3434f26c9">
compiler/GHC/Tc/Gen/App.hs
</a>
</li>
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<h4>Changes:</h4>
<li id="6a1f039ed7725eddef15dd5f4dc318a3434f26c9">
<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/3cd657848f0fb70d530cefbd415ca07a7de9c0f8#6a1f039ed7725eddef15dd5f4dc318a3434f26c9"><strong>compiler/GHC/Tc/Gen/App.hs</strong></a>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="313" style="width: 35px; color: rgba(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="313" style="width: 35px; color: rgba(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">@@ -313,16 +313,6 @@ tcValArgs quick_look fun args</td>
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<pre style="margin: 0;"> <span id="LC313" class="line" lang="haskell">    <span class="n" style="color: #333;">tc_arg</span> <span class="n" style="color: #333;">n</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">EWrap</span> <span class="n" style="color: #333;">wrap</span><span class="p">)</span>          <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">n</span><span class="p">,</span>   <span class="kt" style="color: #458; font-weight: 600;">EWrap</span> <span class="n" style="color: #333;">wrap</span><span class="p">)</span></span>
</pre>
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<pre style="margin: 0;"> <span id="LC314" class="line" lang="haskell">    <span class="n" style="color: #333;">tc_arg</span> <span class="n" style="color: #333;">n</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">ETypeArg</span> <span class="n" style="color: #333;">l</span> <span class="n" style="color: #333;">hs_ty</span> <span class="n" style="color: #333;">ty</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">n</span><span class="o" style="font-weight: 600;">+</span><span class="mi" style="color: #099;">1</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">ETypeArg</span> <span class="n" style="color: #333;">l</span> <span class="n" style="color: #333;">hs_ty</span> <span class="n" style="color: #333;">ty</span><span class="p">)</span></span>
</pre>
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<pre style="margin: 0;"> <span id="LC315" class="line" lang="haskell"></span>
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<td class="diff-line-num new_line old" data-linenumber="316" 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="LC316" class="line" lang="haskell">    <span class="n" style="color: #333;">tc_arg</span> <span class="n" style="color: #333;">n</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">EValArg</span> <span class="p">{</span> <span class="n" style="color: #333;">eva_loc</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">loc</span></span>
</pre>
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<td class="diff-line-num new_line old" data-linenumber="316" 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="LC317" class="line" lang="haskell">                      <span class="p">,</span> <span class="n" style="color: #333;">eva_arg</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">ValArg</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="n" style="color: #333;">l</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsVar</span> <span class="n" style="color: #333;">noExtField</span> <span class="n" style="color: #333;">tvname</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="n" style="color: #333;">l'</span> <span class="n" style="color: #333;">name</span><span class="p">)))</span></span>
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<pre style="margin: 0;">-<span id="LC318" class="line" lang="haskell">                      <span class="p">,</span> <span class="n" style="color: #333;">eva_arg_ty</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ty</span> <span class="p">})</span></span>
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<pre style="margin: 0;">-<span id="LC319" class="line" lang="haskell">      <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">n</span> <span class="o" style="font-weight: 600;">+</span> <span class="mi" style="color: #099;">1</span><span class="p">,</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">ETypeArg</span> <span class="n" style="color: #333;">loc</span> <span class="n" style="color: #333;">arg'</span> <span class="p">(</span><span class="n" style="color: #333;">irrelevantMult</span> <span class="n" style="color: #333;">ty</span><span class="p">)))</span></span>
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<pre style="margin: 0;">-<span id="LC320" class="line" lang="haskell">      <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;">-<span id="LC321" class="line" lang="haskell">        <span class="n" style="color: #333;">arg'</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">HsWC</span> <span class="p">{</span> <span class="n" style="color: #333;">hswc_body</span> <span class="o" style="font-weight: 600;">=</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="n" style="color: #333;">l</span> <span class="n" style="color: #333;">ty_arg</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC322" class="line" lang="haskell">                    <span class="p">,</span> <span class="n" style="color: #333;">hswc_ext</span>  <span class="o" style="font-weight: 600;">=</span> <span class="p">[</span><span class="n" style="color: #333;">name</span><span class="p">]</span></span>
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<pre style="margin: 0;">-<span id="LC323" class="line" lang="haskell">                    <span class="p">}</span></span>
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<pre style="margin: 0;">-<span id="LC324" class="line" lang="haskell">        <span class="n" style="color: #333;">ty_arg</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">HsTyVar</span> <span class="kt" style="color: #458; font-weight: 600;">NoExtField</span> <span class="kt" style="color: #458; font-weight: 600;">IsPromoted</span> <span class="n" style="color: #333;">tvname</span></span>
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<pre style="margin: 0;">-<span id="LC325" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC316" class="line" lang="haskell">    <span class="n" style="color: #333;">tc_arg</span> <span class="n" style="color: #333;">n</span> <span class="n" style="color: #333;">eva</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">EValArg</span> <span class="p">{</span> <span class="n" style="color: #333;">eva_arg</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">arg</span><span class="p">,</span> <span class="n" style="color: #333;">eva_arg_ty</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">Scaled</span> <span class="n" style="color: #333;">mult</span> <span class="n" style="color: #333;">arg_ty</span> <span class="p">})</span></span>
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327
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<td class="diff-line-num new_line" data-linenumber="317" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
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<pre style="margin: 0;"> <span id="LC317" 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="c1" style="color: #998; font-style: italic;">-- Crucial step: expose QL results before checking arg_ty</span></span>
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328
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<pre style="margin: 0;"> <span id="LC318" class="line" lang="haskell">             <span class="c1" style="color: #998; font-style: italic;">-- So far as the paper is concerned, this step applies</span></span>
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