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<h3>

Ben Gamari pushed to branch wip/T18151

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/c32cbf39f2c3fa1692fe1c88742a827a7e8d8e95">c32cbf39</a></strong>

<div>

<span>by Ben Gamari</span>

<i>at 2020-05-10T21:24:20-04:00</i>

</div>

<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">testsuite: Add test for #18151

</pre>

</li>

<li>

<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/e4ec81757288d7003eb8407e529d0a1a64ebc040">e4ec8175</a></strong>

<div>

<span>by Ben Gamari</span>

<i>at 2020-05-10T21:24:59-04:00</i>

</div>

<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">HsToCore: Eta expand left sections

Strangely, the comment next to this code already alluded to the fact

that even simply eta-expanding will sacrifice laziness. It's quite

unclear how we regressed so far.

See #18151.

</pre>

</li>

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<h4>4 changed files:</h4>

<ul>

<li class="file-stats">

<a href="#6bdd5abc649727f2a802bc96ce5c276de19d3726">

compiler/GHC/HsToCore/Expr.hs

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<a href="#87495e8948681fff7c2795af71a155f41e49b61e">

<span class="new-file">

+

testsuite/tests/deSugar/should_run/T18151.hs

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<a href="#c2994656183de44abc713698e97c6049be710651">

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+

testsuite/tests/deSugar/should_run/T18151.stdout

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<li class="file-stats">

<a href="#dd8561f0b2e04faceab592f6504b9c483c57484a">

testsuite/tests/deSugar/should_run/all.T

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<h4>Changes:</h4>

<li id="6bdd5abc649727f2a802bc96ce5c276de19d3726">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/75efdfd8994f0c6d19112a22e0b651271fd10053...e4ec81757288d7003eb8407e529d0a1a64ebc040#6bdd5abc649727f2a802bc96ce5c276de19d3726"><strong>compiler/GHC/HsToCore/Expr.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">@@ -338,26 +338,25 @@ Then we get</td>

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<pre style="margin: 0;"> <span id="LC338" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">That 'g' in the 'in' part is an evidence variable, and when</span></span>

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<pre style="margin: 0;"> <span id="LC339" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">converting to core it must become a CO.</span></span>

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<pre style="margin: 0;"> <span id="LC340" class="line" lang="haskell"></span>

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<pre style="margin: 0;">+<span id="LC341" class="line" lang="haskell"></span>

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<pre style="margin: 0;">+<span id="LC342" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">Note [Desugaring operator sections]</span></span>

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<pre style="margin: 0;">+<span id="LC343" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~</span></span>

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<pre style="margin: 0;"> <span id="LC344" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">Operator sections.  At first it looks as if we can convert</span></span>

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<pre style="margin: 0;">-<span id="LC342" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">\begin{verbatim}</span></span>

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<pre style="margin: 0;">-<span id="LC343" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">        (expr op)</span></span>

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<pre style="margin: 0;">-<span id="LC344" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">\end{verbatim}</span></span>

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<pre style="margin: 0;">+<span id="LC345" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">    (expr op)</span></span>

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<pre style="margin: 0;"> <span id="LC346" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">to</span></span>

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<pre style="margin: 0;">-<span id="LC346" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">\begin{verbatim}</span></span>

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<pre style="margin: 0;">-<span id="LC347" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">        \x -> op expr x</span></span>

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<pre style="margin: 0;">-<span id="LC348" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">\end{verbatim}</span></span>

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<pre style="margin: 0;">+<span id="LC347" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">    \x -> op expr x</span></span>

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<pre style="margin: 0;"> <span id="LC348" class="line" lang="haskell"></span>

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<pre style="margin: 0;"> <span id="LC349" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">But no!  expr might be a redex, and we can lose laziness badly this</span></span>

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<pre style="margin: 0;"> <span id="LC350" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">way.  Consider</span></span>

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<pre style="margin: 0;">-<span id="LC352" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">\begin{verbatim}</span></span>

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<pre style="margin: 0;">-<span id="LC353" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">        map (expr op) xs</span></span>

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<pre style="margin: 0;">-<span id="LC354" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">\end{verbatim}</span></span>

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<pre style="margin: 0;">-<span id="LC355" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">for example.  So we convert instead to</span></span>

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<pre style="margin: 0;">-<span id="LC356" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">\begin{verbatim}</span></span>

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<pre style="margin: 0;">-<span id="LC357" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">        let y = expr in \x -> op y x</span></span>

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<pre style="margin: 0;">-<span id="LC358" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">\end{verbatim}</span></span>

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<pre style="margin: 0;">+<span id="LC351" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">    map (expr op) xs</span></span>

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<pre style="margin: 0;">+<span id="LC352" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">for example.</span></span>

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<pre style="margin: 0;">+<span id="LC353" class="line" lang="haskell"></span>

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<pre style="margin: 0;">+<span id="LC354" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">So we convert instead to</span></span>

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<pre style="margin: 0;">+<span id="LC355" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">    let y = expr in \x -> op y x</span></span>

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<pre style="margin: 0;"> <span id="LC356" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">If \tr{expr} is actually just a variable, say, then the simplifier</span></span>

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<pre style="margin: 0;"> <span id="LC357" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">will sort it out.</span></span>

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<pre style="margin: 0;">+<span id="LC358" class="line" lang="haskell"></span>

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<pre style="margin: 0;">+<span id="LC359" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">See #18151.</span></span>

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<pre style="margin: 0;"> <span id="LC360" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">-}</span></span>

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<pre style="margin: 0;"> <span id="LC361" class="line" lang="haskell"></span>

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<pre style="margin: 0;"> <span id="LC362" class="line" lang="haskell"><span class="n" style="color: #333;">dsExpr</span> <span class="n" style="color: #333;">e</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">OpApp</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">e1</span> <span class="n" style="color: #333;">op</span> <span class="n" style="color: #333;">e2</span><span class="p">)</span></span>

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<pre style="margin: 0;"> <span id="LC365" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">dsWhenNoErrs</span> <span class="p">(</span><span class="n" style="color: #333;">mapM</span> <span class="n" style="color: #333;">dsLExprNoLP</span> <span class="p">[</span><span class="n" style="color: #333;">e1</span><span class="p">,</span> <span class="n" style="color: #333;">e2</span><span class="p">])</span></span>

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<pre style="margin: 0;"> <span id="LC366" class="line" lang="haskell">                      <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">exprs'</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">mkCoreAppsDs</span> <span class="p">(</span><span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"opapp"</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">e</span><span class="p">)</span> <span class="n" style="color: #333;">op'</span> <span class="n" style="color: #333;">exprs'</span><span class="p">)</span> <span class="p">}</span></span>

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<pre style="margin: 0;"> <span id="LC367" class="line" lang="haskell"></span>

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<pre style="margin: 0;">-<span id="LC369" class="line" lang="haskell"><span class="n" style="color: #333;">dsExpr</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">SectionL</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">expr</span> <span class="n" style="color: #333;">op</span><span class="p">)</span>       <span class="c1" style="color: #998; font-style: italic;">-- Desugar (e !) to ((!) e)</span></span>

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<pre style="margin: 0;">-<span id="LC370" 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;">op'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">dsLExpr</span> <span class="n" style="color: #333;">op</span></span>

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<pre style="margin: 0;">-<span id="LC371" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">dsWhenNoErrs</span> <span class="p">(</span><span class="n" style="color: #333;">dsLExprNoLP</span> <span class="n" style="color: #333;">expr</span><span class="p">)</span></span>

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<pre style="margin: 0;">-<span id="LC372" class="line" lang="haskell">                      <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">expr'</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">mkCoreAppDs</span> <span class="p">(</span><span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"sectionl"</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">expr</span><span class="p">)</span> <span class="n" style="color: #333;">op'</span> <span class="n" style="color: #333;">expr'</span><span class="p">)</span> <span class="p">}</span></span>

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<pre style="margin: 0;">+<span id="LC368" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- dsExpr (SectionL op expr)  ===  (expr `op`)  ~>  \y -> op expr y</span></span>

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<pre style="margin: 0;">+<span id="LC369" 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="LC370" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See Note [Desugaring operator sections]</span></span>

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<pre style="margin: 0;">+<span id="LC371" class="line" lang="haskell"><span class="n" style="color: #333;">dsExpr</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">SectionL</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">expr</span> <span class="n" style="color: #333;">op</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span></span>

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<pre style="margin: 0;">+<span id="LC372" class="line" lang="haskell">    <span class="n" style="color: #333;">core_op</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">dsLExpr</span> <span class="n" style="color: #333;">op</span></span>

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<pre style="margin: 0;">+<span id="LC373" class="line" lang="haskell">    <span class="kr" style="font-weight: 600;">let</span> <span class="p">(</span><span class="n" style="color: #333;">x_ty</span><span class="o" style="font-weight: 600;">:</span><span class="n" style="color: #333;">y_ty</span><span class="o" style="font-weight: 600;">:</span><span class="kr" style="font-weight: 600;">_</span><span class="p">,</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">splitFunTys</span> <span class="p">(</span><span class="n" style="color: #333;">exprType</span> <span class="n" style="color: #333;">core_op</span><span class="p">)</span></span>

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<pre style="margin: 0;">+<span id="LC374" class="line" lang="haskell">    <span class="n" style="color: #333;">x_core</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">dsLExpr</span> <span class="n" style="color: #333;">expr</span></span>

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<pre style="margin: 0;">+<span id="LC375" class="line" lang="haskell">    <span class="n" style="color: #333;">dsWhenNoErrs</span> <span class="p">(</span><span class="n" style="color: #333;">mapM</span> <span class="n" style="color: #333;">newSysLocalDsNoLP</span> <span class="p">[</span><span class="n" style="color: #333;">x_ty</span><span class="p">,</span> <span class="n" style="color: #333;">y_ty</span><span class="p">])</span></span>

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<pre style="margin: 0;">+<span id="LC376" class="line" lang="haskell">                 <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="p">[</span><span class="n" style="color: #333;">x_id</span><span class="p">,</span> <span class="n" style="color: #333;">y_id</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">bindNonRec</span> <span class="n" style="color: #333;">x_id</span> <span class="n" style="color: #333;">x_core</span> <span class="o" style="font-weight: 600;">$</span></span>

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<pre style="margin: 0;">+<span id="LC377" class="line" lang="haskell">                                   <span class="kt" style="color: #458; font-weight: 600;">Lam</span> <span class="n" style="color: #333;">y_id</span> <span class="p">(</span><span class="n" style="color: #333;">mkCoreAppsDs</span> <span class="p">(</span><span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"sectionl"</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">e</span><span class="p">)</span></span>

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<pre style="margin: 0;">+<span id="LC378" class="line" lang="haskell">                                                          <span class="n" style="color: #333;">core_op</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">Var</span> <span class="n" style="color: #333;">x_id</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Var</span> <span class="n" style="color: #333;">y_id</span><span class="p">]))</span></span>

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<pre style="margin: 0;"> <span id="LC379" class="line" lang="haskell"></span>

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<pre style="margin: 0;">-<span id="LC374" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- dsLExpr (SectionR op expr)   -- \ x -> op x expr</span></span>

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<pre style="margin: 0;">+<span id="LC380" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- dsExpr (SectionR op expr)  === (`op` expr)  ~>  \x -> op x expr</span></span>

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<pre style="margin: 0;">+<span id="LC381" 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="LC382" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See Note [Desugaring operator sections]</span></span>

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<pre style="margin: 0;"> <span id="LC383" class="line" lang="haskell"><span class="n" style="color: #333;">dsExpr</span> <span class="n" style="color: #333;">e</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">SectionR</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">op</span> <span class="n" style="color: #333;">expr</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span></span>

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<pre style="margin: 0;"> <span id="LC384" class="line" lang="haskell">    <span class="n" style="color: #333;">core_op</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">dsLExpr</span> <span class="n" style="color: #333;">op</span></span>

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<pre style="margin: 0;">-<span id="LC377" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">-- for the type of x, we need the type of op's 2nd argument</span></span>

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<pre style="margin: 0;"> <span id="LC385" class="line" lang="haskell">    <span class="kr" style="font-weight: 600;">let</span> <span class="p">(</span><span class="n" style="color: #333;">x_ty</span><span class="o" style="font-weight: 600;">:</span><span class="n" style="color: #333;">y_ty</span><span class="o" style="font-weight: 600;">:</span><span class="kr" style="font-weight: 600;">_</span><span class="p">,</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">splitFunTys</span> <span class="p">(</span><span class="n" style="color: #333;">exprType</span> <span class="n" style="color: #333;">core_op</span><span class="p">)</span></span>

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<pre style="margin: 0;">-<span id="LC379" class="line" lang="haskell">        <span class="c1" style="color: #998; font-style: italic;">-- See comment with SectionL</span></span>

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<pre style="margin: 0;"> <span id="LC386" class="line" lang="haskell">    <span class="n" style="color: #333;">y_core</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">dsLExpr</span> <span class="n" style="color: #333;">expr</span></span>

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<pre style="margin: 0;"> <span id="LC387" class="line" lang="haskell">    <span class="n" style="color: #333;">dsWhenNoErrs</span> <span class="p">(</span><span class="n" style="color: #333;">mapM</span> <span class="n" style="color: #333;">newSysLocalDsNoLP</span> <span class="p">[</span><span class="n" style="color: #333;">x_ty</span><span class="p">,</span> <span class="n" style="color: #333;">y_ty</span><span class="p">])</span></span>

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<pre style="margin: 0;"> <span id="LC388" class="line" lang="haskell">                 <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="p">[</span><span class="n" style="color: #333;">x_id</span><span class="p">,</span> <span class="n" style="color: #333;">y_id</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">bindNonRec</span> <span class="n" style="color: #333;">y_id</span> <span class="n" style="color: #333;">y_core</span> <span class="o" style="font-weight: 600;">$</span></span>

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<br>

</li>

<li id="87495e8948681fff7c2795af71a155f41e49b61e">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/75efdfd8994f0c6d19112a22e0b651271fd10053...e4ec81757288d7003eb8407e529d0a1a64ebc040#87495e8948681fff7c2795af71a155f41e49b61e"><strong>testsuite/tests/deSugar/should_run/T18151.hs</strong></a>

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1

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<pre style="margin: 0;">+<span id="LC1" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- According to the Report this should reduce to (). However, in #18151 it was</span></span>

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<td class="diff-line-num new new_line" data-linenumber="2" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

2

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<pre style="margin: 0;">+<span id="LC2" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- reported that GHC bottoms.</span></span>

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3

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<pre style="margin: 0;">+<span id="LC3" class="line" lang="haskell"><span class="n" style="color: #333;">x</span> <span class="o" style="font-weight: 600;">::</span> <span class="nb" style="color: #0086b3;">()</span></span>

</pre>

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4

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<pre style="margin: 0;">+<span id="LC4" class="line" lang="haskell"><span class="n" style="color: #333;">x</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">seq</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">True</span> <span class="p">`</span><span class="n" style="color: #333;">undefined</span><span class="p">`)</span> <span class="nb" style="color: #0086b3;">()</span></span>

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5

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<pre style="margin: 0;">+<span id="LC5" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# NOINLINE x #-}</span></span>

</pre>

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6

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<pre style="margin: 0;">+<span id="LC6" class="line" lang="haskell"></span>

</pre>

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7

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<pre style="margin: 0;">+<span id="LC7" class="line" lang="haskell"><span class="n" style="color: #333;">main</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">IO</span> <span class="nb" style="color: #0086b3;">()</span></span>

</pre>

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8

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<pre style="margin: 0;">+<span id="LC8" class="line" lang="haskell"><span class="n" style="color: #333;">main</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span></span>

</pre>

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9

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<pre style="margin: 0;">+<span id="LC9" class="line" lang="haskell">  <span class="n" style="color: #333;">print</span> <span class="n" style="color: #333;">x</span></span>

</pre>

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10

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<pre style="margin: 0;">+<span id="LC10" class="line" lang="haskell"></span></pre>

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</li>

<li id="c2994656183de44abc713698e97c6049be710651">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/75efdfd8994f0c6d19112a22e0b651271fd10053...e4ec81757288d7003eb8407e529d0a1a64ebc040#c2994656183de44abc713698e97c6049be710651"><strong>testsuite/tests/deSugar/should_run/T18151.stdout</strong></a>

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

1

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<pre style="margin: 0;">+<span id="LC1" class="line" lang="plaintext">()</span></pre>

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<td class="new_line diff-line-num" style="width: 35px; color: rgba(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">\ No newline at end of file</td>

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</li>

<li id="dd8561f0b2e04faceab592f6504b9c483c57484a">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/75efdfd8994f0c6d19112a22e0b651271fd10053...e4ec81757288d7003eb8407e529d0a1a64ebc040#dd8561f0b2e04faceab592f6504b9c483c57484a"><strong>testsuite/tests/deSugar/should_run/all.T</strong></a>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="63" style="width: 35px; color: rgba(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="63" style="width: 35px; color: rgba(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">@@ -63,3 +63,4 @@ test('T11601', exit_code(1), compile_and_run, [''])</td>

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<td class="diff-line-num old_line" data-linenumber="63" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

63

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<td class="diff-line-num new_line" data-linenumber="63" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

63

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<pre style="margin: 0;"> <span id="LC63" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">T11747</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile_and_run</span><span class="p">,</span> <span class="p">['</span><span class="s1" style="color: #d14;">-dcore-lint</span><span class="p">'])</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="64" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

64

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<td class="diff-line-num new_line" data-linenumber="64" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

64

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<pre style="margin: 0;"> <span id="LC64" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">T12595</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile_and_run</span><span class="p">,</span> <span class="p">[''])</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="65" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

65

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<td class="diff-line-num new_line" data-linenumber="65" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

65

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<pre style="margin: 0;"> <span id="LC65" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">T13285</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile_and_run</span><span class="p">,</span> <span class="p">[''])</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="66" style="width: 35px; color: rgba(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="66" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

66

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<pre style="margin: 0;">+<span id="LC66" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">T18151</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile_and_run</span><span class="p">,</span> <span class="p">[''])</span></span></pre>

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