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<h3>

 Marge Bot pushed to branch master

at <a href="https://gitlab.haskell.org/ghc/ghc">Glasgow Haskell Compiler / GHC</a>

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<h4>

Commits:

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<li>

<strong><a href="https://gitlab.haskell.org/ghc/ghc/commit/db78ac6f5d69618ff143ab4b572e7f58a1805687">db78ac6f</a></strong>

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<span>by Andrew Martin</span>

<i>at 2019-06-04T05:09:43Z</i>

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<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Use a better strategy for determining the offset applied to foreign function arguments that have an unlifted boxed type. We used to use the type of the argument. We now use the type of the foreign function. Add a test to confirm that the roundtrip conversion between an unlifted boxed type and Any is sound in the presence of a foreign function call.

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<h4>23 changed files:</h4>

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<a href="#c569fe5eb9284314e129c104f265fe360a4b1d3d">

compiler/codeGen/StgCmmExpr.hs

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<a href="#ae667aa599c96310c85c0258e4e7d72b00275ae5">

compiler/codeGen/StgCmmForeign.hs

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compiler/codeGen/StgCmmPrim.hs

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compiler/stgSyn/CoreToStg.hs

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compiler/stgSyn/StgSyn.hs

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testsuite/tests/ffi/should_compile/all.T

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<h4>Changes:</h4>

<li id="c569fe5eb9284314e129c104f265fe360a4b1d3d">

<a href="https://gitlab.haskell.org/ghc/ghc/commit/db78ac6f5d69618ff143ab4b572e7f58a1805687#c569fe5eb9284314e129c104f265fe360a4b1d3d"><strong>compiler/codeGen/StgCmmExpr.hs</strong></a>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="577" 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="577" 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">@@ -577,7 +577,7 @@ isSimpleScrut _                _           = return False</td>

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577

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<td class="diff-line-num new_line" data-linenumber="577" 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">

577

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<pre style="margin: 0;"> <span id="LC577" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="578" 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">

578

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<td class="diff-line-num new_line" data-linenumber="578" 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="LC578" class="line" lang="haskell"><span class="n" style="color: #333;">isSimpleOp</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">StgOp</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">StgArg</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">FCode</span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span></span>

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<td class="diff-line-num old_line" data-linenumber="579" 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">

579

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<pre style="margin: 0;"> <span id="LC579" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- True iff the op cannot block or allocate</span></span>

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<td class="diff-line-num old old_line" data-linenumber="580" 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">

580

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<td class="diff-line-num new_line old" data-linenumber="580" 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="LC580" class="line" lang="haskell"><span class="n" style="color: #333;">isSimpleOp</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">StgFCallOp</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">CCall</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">CCallSpec</span> <span class="kr" style="font-weight: 600;">_</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">safe</span><span class="p">))</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">)</span> <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">return</span> <span class="o" style="font-weight: 600;">$!</span> <span class="n" style="color: #333;">not</span> <span class="p">(</span><span class="n" style="color: #333;">playSafe</span> <span class="n" style="color: #333;">safe</span><span class="p">)</span></span>

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<td class="diff-line-num new new_line" data-linenumber="580" 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">

580

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<pre style="margin: 0;">+<span id="LC580" class="line" lang="haskell"><span class="n" style="color: #333;">isSimpleOp</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">StgFCallOp</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">CCall</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">CCallSpec</span> <span class="kr" style="font-weight: 600;">_</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">safe</span><span class="p">))</span> <span class="kr" style="font-weight: 600;">_</span><span class="idiff left"> </span><span class="kr" style="font-weight: 600;"><span class="idiff right">_</span></span><span class="p">)</span> <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">return</span> <span class="o" style="font-weight: 600;">$!</span> <span class="n" style="color: #333;">not</span> <span class="p">(</span><span class="n" style="color: #333;">playSafe</span> <span class="n" style="color: #333;">safe</span><span class="p">)</span></span>

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581

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581

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<pre style="margin: 0;"> <span id="LC581" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- dataToTag# evalautes its argument, see Note [dataToTag#] in primops.txt.pp</span></span>

</pre>

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582

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582

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<pre style="margin: 0;"> <span id="LC582" class="line" lang="haskell"><span class="n" style="color: #333;">isSimpleOp</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">StgPrimOp</span> <span class="kt" style="color: #458; font-weight: 600;">DataToTagOp</span><span class="p">)</span> <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">return</span> <span class="kt" style="color: #458; font-weight: 600;">False</span></span>

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<td class="diff-line-num new_line" data-linenumber="583" 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">

583

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<pre style="margin: 0;"> <span id="LC583" class="line" lang="haskell"><span class="n" style="color: #333;">isSimpleOp</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">StgPrimOp</span> <span class="n" style="color: #333;">op</span><span class="p">)</span> <span class="n" style="color: #333;">stg_args</span>                  <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span></span>

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</li>

<li id="ae667aa599c96310c85c0258e4e7d72b00275ae5">

<a href="https://gitlab.haskell.org/ghc/ghc/commit/db78ac6f5d69618ff143ab4b572e7f58a1805687#ae667aa599c96310c85c0258e4e7d72b00275ae5"><strong>compiler/codeGen/StgCmmForeign.hs</strong></a>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="34" 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="34" 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">@@ -34,7 +34,6 @@ import CmmUtils</td>

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<pre style="margin: 0;"> <span id="LC34" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">MkGraph</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC35" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Type</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC36" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">RepType</span></span>

</pre>

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<td class="diff-line-num new_line old" data-linenumber="37" 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="LC37" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">TysPrim</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC37" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">CLabel</span></span>

</pre>

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<td class="diff-line-num new_line" data-linenumber="38" 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="LC38" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">SMRep</span></span>

</pre>

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<td class="diff-line-num new_line" data-linenumber="39" 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="LC39" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">ForeignCall</span></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="44" 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="43" 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">@@ -44,20 +43,26 @@ import Outputable</td>

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<pre style="margin: 0;"> <span id="LC43" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">UniqSupply</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC44" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">BasicTypes</span></span>

</pre>

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<td class="diff-line-num new_line" data-linenumber="45" 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="LC45" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="47" 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="46" 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="LC46" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">TyCoRep</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="47" 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="47" 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="LC47" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">TysPrim</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="47" 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="48" 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="LC48" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Util</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">zipEqual</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="47" 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="49" 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="LC49" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="47" 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="50" 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="LC50" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Control.Monad</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="48" 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="51" 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="LC51" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="49" 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="52" 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="LC52" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-----------------------------------------------------------------------------</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="50" 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="53" 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="LC53" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Code generation for Foreign Calls</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="51" 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="54" 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="LC54" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-----------------------------------------------------------------------------</span></span>

</pre>

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<td class="diff-line-num new_line" data-linenumber="55" 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="LC55" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;">-<span id="LC53" class="line" lang="haskell"><span class="cd">-- | emit code for a foreign call, and return the results to the sequel.</span></span>

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<pre style="margin: 0;">-<span id="LC54" 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="LC56" class="line" lang="haskell"><span class="cd">-- | Emit code for a foreign call, and return the results to the sequel.</span></span>

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<pre style="margin: 0;">+<span id="LC57" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Precondition: the length of the arguments list is the same as the</span></span>

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<pre style="margin: 0;">+<span id="LC58" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- arity of the foreign function.</span></span>

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<pre style="margin: 0;"> <span id="LC59" class="line" lang="haskell"><span class="n" style="color: #333;">cgForeignCall</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">ForeignCall</span>            <span class="c1" style="color: #998; font-style: italic;">-- the op</span></span>

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<pre style="margin: 0;">+<span id="LC60" class="line" lang="haskell">              <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Type</span>                   <span class="c1" style="color: #998; font-style: italic;">-- type of foreign function</span></span>

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<pre style="margin: 0;"> <span id="LC61" 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;">StgArg</span><span class="p">]</span>               <span class="c1" style="color: #998; font-style: italic;">-- x,y    arguments</span></span>

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<pre style="margin: 0;"> <span id="LC62" class="line" lang="haskell">              <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Type</span>                   <span class="c1" style="color: #998; font-style: italic;">-- result type</span></span>

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<pre style="margin: 0;"> <span id="LC63" class="line" lang="haskell">              <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">FCode</span> <span class="kt" style="color: #458; font-weight: 600;">ReturnKind</span></span>

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<pre style="margin: 0;"> <span id="LC64" class="line" lang="haskell"></span>

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<pre style="margin: 0;">-<span id="LC60" class="line" lang="haskell"><span class="n" style="color: #333;">cgForeignCall</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">CCall</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">CCallSpec</span> <span class="n" style="color: #333;">target</span> <span class="n" style="color: #333;">cconv</span> <span class="n" style="color: #333;">safety</span><span class="p">))</span> <span class="n" style="color: #333;">stg_args</span> <span class="n" style="color: #333;">res_ty</span></span>

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<pre style="margin: 0;">+<span id="LC65" class="line" lang="haskell"><span class="n" style="color: #333;">cgForeignCall</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">CCall</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">CCallSpec</span> <span class="n" style="color: #333;">target</span> <span class="n" style="color: #333;">cconv</span> <span class="n" style="color: #333;">safety</span><span class="p">))</span> <span class="n" style="color: #333;"><span class="idiff left">typ</span></span><span class="idiff right"> </span><span class="n" style="color: #333;">stg_args</span> <span class="n" style="color: #333;">res_ty</span></span>

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<pre style="margin: 0;"> <span id="LC66" 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;">dflags</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">getDynFlags</span></span>

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<pre style="margin: 0;"> <span id="LC67" class="line" lang="haskell">        <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="c1" style="color: #998; font-style: italic;">-- in the stdcall calling convention, the symbol needs @size appended</span></span>

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<pre style="margin: 0;"> <span id="LC68" class="line" lang="haskell">              <span class="c1" style="color: #998; font-style: italic;">-- to it, where size is the total number of bytes of arguments.  We</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">@@ -70,7 +75,7 @@ cgForeignCall (CCall (CCallSpec target cconv safety)) stg_args res_ty</td>

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<pre style="margin: 0;"> <span id="LC75" class="line" lang="haskell">              <span class="c1" style="color: #998; font-style: italic;">-- ToDo: this might not be correct for 64-bit API</span></span>

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<pre style="margin: 0;"> <span id="LC76" class="line" lang="haskell">            <span class="n" style="color: #333;">arg_size</span> <span class="p">(</span><span class="n" style="color: #333;">arg</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;">max</span> <span class="p">(</span><span class="n" style="color: #333;">widthInBytes</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">typeWidth</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">cmmExprType</span> <span class="n" style="color: #333;">dflags</span> <span class="n" style="color: #333;">arg</span><span class="p">)</span></span>

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<pre style="margin: 0;"> <span id="LC77" class="line" lang="haskell">                                     <span class="p">(</span><span class="n" style="color: #333;">wORD_SIZE</span> <span class="n" style="color: #333;">dflags</span><span class="p">)</span></span>

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<pre style="margin: 0;">-<span id="LC73" class="line" lang="haskell">        <span class="p">;</span> <span class="n" style="color: #333;">cmm_args</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">getFCallArgs</span> <span class="n" style="color: #333;">stg_args</span></span>

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<pre style="margin: 0;">+<span id="LC78" class="line" lang="haskell">        <span class="p">;</span> <span class="n" style="color: #333;">cmm_args</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">getFCallArgs</span> <span class="n" style="color: #333;">stg_args</span><span class="idiff left"> </span><span class="n" style="color: #333;"><span class="idiff right">typ</span></span></span>

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<pre style="margin: 0;"> <span id="LC79" class="line" lang="haskell">        <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">res_regs</span><span class="p">,</span> <span class="n" style="color: #333;">res_hints</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">newUnboxedTupleRegs</span> <span class="n" style="color: #333;">res_ty</span></span>

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<pre style="margin: 0;"> <span id="LC80" 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;">call_args</span><span class="p">,</span> <span class="n" style="color: #333;">arg_hints</span><span class="p">),</span> <span class="n" style="color: #333;">cmm_target</span><span class="p">)</span></span>

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<pre style="margin: 0;"> <span id="LC81" class="line" lang="haskell">                <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">target</span> <span class="kr" style="font-weight: 600;">of</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">@@ -492,43 +497,128 @@ stack_SP     dflags = closureField dflags (oFFSET_StgStack_sp dflags)</td>

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<pre style="margin: 0;"> <span id="LC497" class="line" lang="haskell"><span class="n" style="color: #333;">closureField</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">DynFlags</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">ByteOff</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">ByteOff</span></span>

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<pre style="margin: 0;"> <span id="LC498" class="line" lang="haskell"><span class="n" style="color: #333;">closureField</span> <span class="n" style="color: #333;">dflags</span> <span class="n" style="color: #333;">off</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">off</span> <span class="o" style="font-weight: 600;">+</span> <span class="n" style="color: #333;">fixedHdrSize</span> <span class="n" style="color: #333;">dflags</span></span>

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<pre style="margin: 0;"> <span id="LC499" class="line" lang="haskell"></span>

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<pre style="margin: 0;">-<span id="LC495" 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="LC500" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Note [Unlifted boxed arguments to foreign calls]</span></span>

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<pre style="margin: 0;">+<span id="LC501" 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="LC502" 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="LC503" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- For certain types passed to foreign calls, we adjust the actual</span></span>

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<pre style="margin: 0;">-<span id="LC497" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- value passed to the call.  For ByteArray#/Array# we pass the</span></span>

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<pre style="margin: 0;">-<span id="LC498" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- address of the actual array, not the address of the heap object.</span></span>

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<pre style="margin: 0;">-<span id="LC499" class="line" lang="haskell"></span>

</pre>

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500

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<pre style="margin: 0;">-<span id="LC500" class="line" lang="haskell"><span class="n" style="color: #333;">getFCallArgs</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">StgArg</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">FCode</span> <span class="p">[(</span><span class="kt" style="color: #458; font-weight: 600;">CmmExpr</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">ForeignHint</span><span class="p">)]</span></span>

</pre>

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504

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<pre style="margin: 0;">+<span id="LC504" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- value passed to the call.  For ByteArray#, Array#, SmallArray#,</span></span>

</pre>

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505

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<pre style="margin: 0;">+<span id="LC505" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- and ArrayArray#, we pass the address of the array's payload, not</span></span>

</pre>

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506

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<pre style="margin: 0;">+<span id="LC506" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- the address of the heap object. For example, consider</span></span>

</pre>

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507

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<pre style="margin: 0;">+<span id="LC507" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--   foreign import "c_foo" foo :: ByteArray# -> Int# -> IO ()</span></span>

</pre>

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508

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<pre style="margin: 0;">+<span id="LC508" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- At a Haskell call like `foo x y`, we'll generate a C call that</span></span>

</pre>

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509

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<pre style="margin: 0;">+<span id="LC509" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- is more like</span></span>

</pre>

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510

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<pre style="margin: 0;">+<span id="LC510" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--   c_foo( x+8, y )</span></span>

</pre>

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511

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<pre style="margin: 0;">+<span id="LC511" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- where the "+8" takes the heap pointer (x :: ByteArray#) and moves</span></span>

</pre>

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512

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<pre style="margin: 0;">+<span id="LC512" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- it past the header words of the ByteArray object to point directly</span></span>

</pre>

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513

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<pre style="margin: 0;">+<span id="LC513" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- to the data inside the ByteArray#. (The exact offset depends</span></span>

</pre>

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514

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<pre style="margin: 0;">+<span id="LC514" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- on the target architecture and on profiling) By contrast, (y :: Int#)</span></span>

</pre>

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515

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<pre style="margin: 0;">+<span id="LC515" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- requires no such adjustment.</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC516" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC517" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- This adjustment is performed by 'add_shim'. The size of the</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="518" 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">

518

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<pre style="margin: 0;">+<span id="LC518" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- adjustment depends on the type of heap object. But</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="519" 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">

519

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<pre style="margin: 0;">+<span id="LC519" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- how can we determine that type? There are two available options.</span></span>

</pre>

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520

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<pre style="margin: 0;">+<span id="LC520" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- We could use the types of the actual values that the foreign call</span></span>

</pre>

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521

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<pre style="margin: 0;">+<span id="LC521" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- has been applied to, or we could use the types present in the</span></span>

</pre>

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522

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<pre style="margin: 0;">+<span id="LC522" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- foreign function's type. Prior to GHC 8.10, we used the former</span></span>

</pre>

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523

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<pre style="margin: 0;">+<span id="LC523" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- strategy since it's a little more simple. However, in issue #16650</span></span>

</pre>

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524

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<pre style="margin: 0;">+<span id="LC524" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- and more compellingly in the comments of</span></span>

</pre>

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525

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<pre style="margin: 0;">+<span id="LC525" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- https://gitlab.haskell.org/ghc/ghc/merge_requests/939, it was</span></span>

</pre>

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526

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<pre style="margin: 0;">+<span id="LC526" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- demonstrated that this leads to bad behavior in the presence</span></span>

</pre>

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527

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<pre style="margin: 0;">+<span id="LC527" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- of unsafeCoerce#. Returning to the above example, suppose the</span></span>

</pre>

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528

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<pre style="margin: 0;">+<span id="LC528" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Haskell call looked like</span></span>

</pre>

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529

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<pre style="margin: 0;">+<span id="LC529" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--   foo (unsafeCoerce# p) </span></span>

</pre>

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530

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<pre style="margin: 0;">+<span id="LC530" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- where the types of expressions comprising the arguments are</span></span>

</pre>

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531

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<pre style="margin: 0;">+<span id="LC531" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--   p :: (Any :: TYPE 'UnliftedRep)</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC532" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--   i :: Int#</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC533" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- so that the unsafe-coerce is between Any and ByteArray#.</span></span>

</pre>

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534

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<pre style="margin: 0;">+<span id="LC534" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- These two types have the same kind (they are both represented by</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC535" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- a heap pointer) so no GC errors will occur if we do this unsafe coerce.</span></span>

</pre>

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536

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<pre style="margin: 0;">+<span id="LC536" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- By the time this gets to the code generator the cast has been</span></span>

</pre>

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537

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<pre style="margin: 0;">+<span id="LC537" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- discarded so we have</span></span>

</pre>

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538

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<pre style="margin: 0;">+<span id="LC538" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--   foo p y</span></span>

</pre>

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539

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<pre style="margin: 0;">+<span id="LC539" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- But we *must* adjust the pointer to p by a ByteArray# shim,</span></span>

</pre>

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540

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<pre style="margin: 0;">+<span id="LC540" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- *not* by an Any shim (the Any shim involves no offset at all).</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC541" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC542" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- To avoid this bad behavior, we adopt the second strategy: use</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="543" 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">

543

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<pre style="margin: 0;">+<span id="LC543" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- the types present in the foreign function's type.</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC544" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- In collectStgFArgTypes, we convert the foreign function's</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC545" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- type to a list of StgFArgType. Then, in add_shim, we interpret</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC546" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- these as numeric offsets.</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC547" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;">+<span id="LC548" class="line" lang="haskell"><span class="n" style="color: #333;">getFCallArgs</span> <span class="o" style="font-weight: 600;">::</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC549" class="line" lang="haskell">     <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">StgArg</span><span class="p">]</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC550" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Type</span> <span class="c1" style="color: #998; font-style: italic;">-- the type of the foreign function</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC551" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">FCode</span> <span class="p">[(</span><span class="kt" style="color: #458; font-weight: 600;">CmmExpr</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">ForeignHint</span><span class="p">)]</span></span>

</pre>

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501

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<pre style="margin: 0;"> <span id="LC552" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- (a) Drop void args</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC553" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- (b) Add foreign-call shim code</span></span>

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<pre style="margin: 0;"> <span id="LC554" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- It's (b) that makes this differ from getNonVoidArgAmodes</span></span>

</pre>

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<pre style="margin: 0;">-<span id="LC504" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;">-<span id="LC505" class="line" lang="haskell"><span class="n" style="color: #333;">getFCallArgs</span> <span class="n" style="color: #333;">args</span></span>

</pre>

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<pre style="margin: 0;">-<span id="LC506" 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;">mb_cmms</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">mapM</span> <span class="n" style="color: #333;">get</span> <span class="n" style="color: #333;">args</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC555" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Precondition: args and typs have the same length</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC556" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See Note [Unlifted boxed arguments to foreign calls]</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC557" class="line" lang="haskell"><span class="n" style="color: #333;">getFCallArgs</span> <span class="n" style="color: #333;">args</span> <span class="n" style="color: #333;">typ</span></span>

</pre>

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</td>

<td class="diff-line-num new new_line" data-linenumber="558" 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">

558

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<pre style="margin: 0;">+<span id="LC558" 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;">mb_cmms</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">mapM</span> <span class="n" style="color: #333;">get</span> <span class="p">(</span><span class="n" style="color: #333;">zipEqual</span> <span class="s" style="color: #d14;">"getFCallArgs"</span> <span class="n" style="color: #333;">args</span> <span class="p">(</span><span class="n" style="color: #333;">collectStgFArgTypes</span> <span class="n" style="color: #333;">typ</span><span class="p">))</span></span>

</pre>

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507

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559

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<pre style="margin: 0;"> <span id="LC559" 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;">catMaybes</span> <span class="n" style="color: #333;">mb_cmms</span><span class="p">)</span> <span class="p">}</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="508" 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">

508

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<td class="diff-line-num new_line" data-linenumber="560" 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">

560

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<pre style="margin: 0;"> <span id="LC560" 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 old_line" data-linenumber="509" 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">

509

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<pre style="margin: 0;">-<span id="LC509" class="line" lang="haskell">    <span class="n" style="color: #333;">get</span> <span class="n" style="color: #333;">arg</span> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">null</span> <span class="n" style="color: #333;">arg_reps</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="510" 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">

510

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<td class="diff-line-num new_line old" data-linenumber="561" 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="LC510" class="line" lang="haskell">            <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">return</span> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="511" 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">

511

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<pre style="margin: 0;">-<span id="LC511" class="line" lang="haskell">            <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">otherwise</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="512" 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">

512

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<pre style="margin: 0;">-<span id="LC512" 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;">cmm</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">getArgAmode</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">NonVoid</span> <span class="n" style="color: #333;">arg</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="513" 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">

513

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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;">dflags</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">getDynFlags</span></span>

</pre>

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514

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<pre style="margin: 0;">-<span id="LC514" class="line" lang="haskell">                 <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="p">(</span><span class="n" style="color: #333;">add_shim</span> <span class="n" style="color: #333;">dflags</span> <span class="n" style="color: #333;">arg_ty</span> <span class="n" style="color: #333;">cmm</span><span class="p">,</span> <span class="n" style="color: #333;">hint</span><span class="p">))</span> <span class="p">}</span></span>

</pre>

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

515

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<td class="diff-line-num new_line old" data-linenumber="561" 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="LC515" 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 old_line" data-linenumber="516" 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">

516

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<pre style="margin: 0;">-<span id="LC516" class="line" lang="haskell">              <span class="n" style="color: #333;">arg_ty</span>   <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">stgArgType</span> <span class="n" style="color: #333;">arg</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="517" 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">

517

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<pre style="margin: 0;">-<span id="LC517" class="line" lang="haskell">              <span class="n" style="color: #333;">arg_reps</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">typePrimRep</span> <span class="n" style="color: #333;">arg_ty</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="518" 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">

518

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<td class="diff-line-num new_line old" data-linenumber="561" 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="LC518" class="line" lang="haskell">              <span class="n" style="color: #333;">hint</span>     <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">typeForeignHint</span> <span class="n" style="color: #333;">arg_ty</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="519" 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">

519

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<td class="diff-line-num new_line old" data-linenumber="561" 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="LC519" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="520" 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">

520

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<pre style="margin: 0;">-<span id="LC520" class="line" lang="haskell"><span class="n" style="color: #333;">add_shim</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">DynFlags</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Type</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">CmmExpr</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">CmmExpr</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="521" 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">

521

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<pre style="margin: 0;">-<span id="LC521" class="line" lang="haskell"><span class="n" style="color: #333;">add_shim</span> <span class="n" style="color: #333;">dflags</span> <span class="n" style="color: #333;">arg_ty</span> <span class="n" style="color: #333;">expr</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="522" 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">

522

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<pre style="margin: 0;">-<span id="LC522" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">tycon</span> <span class="o" style="font-weight: 600;">==</span> <span class="n" style="color: #333;">arrayPrimTyCon</span> <span class="o" style="font-weight: 600;">||</span> <span class="n" style="color: #333;">tycon</span> <span class="o" style="font-weight: 600;">==</span> <span class="n" style="color: #333;">mutableArrayPrimTyCon</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="523" 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">

523

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<td class="diff-line-num new_line old" data-linenumber="561" 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="LC523" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">cmmOffsetB</span> <span class="n" style="color: #333;">dflags</span> <span class="n" style="color: #333;">expr</span> <span class="p">(</span><span class="n" style="color: #333;">arrPtrsHdrSize</span> <span class="n" style="color: #333;">dflags</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="524" 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">

524

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<td class="diff-line-num new_line old" data-linenumber="561" 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="LC524" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="525" 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">

525

</td>

<td class="diff-line-num new_line old" data-linenumber="561" 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>

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<pre style="margin: 0;">-<span id="LC525" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">tycon</span> <span class="o" style="font-weight: 600;">==</span> <span class="n" style="color: #333;">smallArrayPrimTyCon</span> <span class="o" style="font-weight: 600;">||</span> <span class="n" style="color: #333;">tycon</span> <span class="o" style="font-weight: 600;">==</span> <span class="n" style="color: #333;">smallMutableArrayPrimTyCon</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="526" 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">

526

</td>

<td class="diff-line-num new_line old" data-linenumber="561" 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="LC526" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">cmmOffsetB</span> <span class="n" style="color: #333;">dflags</span> <span class="n" style="color: #333;">expr</span> <span class="p">(</span><span class="n" style="color: #333;">smallArrPtrsHdrSize</span> <span class="n" style="color: #333;">dflags</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="527" 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">

527

</td>

<td class="diff-line-num new_line old" data-linenumber="561" 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="LC527" class="line" lang="haskell"></span>

</pre>

</td>

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<td class="diff-line-num old old_line" data-linenumber="528" 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">

528

</td>

<td class="diff-line-num new_line old" data-linenumber="561" 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="LC528" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">tycon</span> <span class="o" style="font-weight: 600;">==</span> <span class="n" style="color: #333;">byteArrayPrimTyCon</span> <span class="o" style="font-weight: 600;">||</span> <span class="n" style="color: #333;">tycon</span> <span class="o" style="font-weight: 600;">==</span> <span class="n" style="color: #333;">mutableByteArrayPrimTyCon</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="529" 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">

529

</td>

<td class="diff-line-num new_line old" data-linenumber="561" 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="LC529" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">cmmOffsetB</span> <span class="n" style="color: #333;">dflags</span> <span class="n" style="color: #333;">expr</span> <span class="p">(</span><span class="n" style="color: #333;">arrWordsHdrSize</span> <span class="n" style="color: #333;">dflags</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="530" 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">

530

</td>

<td class="diff-line-num new_line old" data-linenumber="561" 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="LC530" class="line" lang="haskell"></span>

</pre>

</td>

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<td class="diff-line-num old old_line" data-linenumber="531" 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">

531

</td>

<td class="diff-line-num new_line old" data-linenumber="561" 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>

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<pre style="margin: 0;">-<span id="LC531" 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;">expr</span></span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="532" 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="561" 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">

561

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<pre style="margin: 0;">+<span id="LC561" class="line" lang="haskell">    <span class="n" style="color: #333;">get</span> <span class="p">(</span><span class="n" style="color: #333;">arg</span><span class="p">,</span><span class="n" style="color: #333;">typ</span><span class="p">)</span></span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="532" 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="562" 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">

562

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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="LC562" class="line" lang="haskell">      <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">null</span> <span class="n" style="color: #333;">arg_reps</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="532" 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="563" 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">

563

</td>

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

<pre style="margin: 0;">+<span id="LC563" class="line" lang="haskell">      <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">return</span> <span class="kt" style="color: #458; font-weight: 600;">Nothing</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="532" 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="564" 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">

564

</td>

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

<pre style="margin: 0;">+<span id="LC564" class="line" lang="haskell">      <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">otherwise</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="532" 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="565" 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">

565

</td>

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

<pre style="margin: 0;">+<span id="LC565" 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;">cmm</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">getArgAmode</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">NonVoid</span> <span class="n" style="color: #333;">arg</span><span class="p">)</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="532" 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="566" 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">

566

</td>

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

<pre style="margin: 0;">+<span id="LC566" class="line" lang="haskell">           <span class="p">;</span> <span class="n" style="color: #333;">dflags</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">getDynFlags</span></span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="532" 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="567" 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">

567

</td>

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

<pre style="margin: 0;">+<span id="LC567" class="line" lang="haskell">           <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="p">(</span><span class="n" style="color: #333;">add_shim</span> <span class="n" style="color: #333;">dflags</span> <span class="n" style="color: #333;">typ</span> <span class="n" style="color: #333;">cmm</span><span class="p">,</span> <span class="n" style="color: #333;">hint</span><span class="p">))</span> <span class="p">}</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="532" 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="568" 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">

568

</td>

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

<pre style="margin: 0;">+<span id="LC568" class="line" lang="haskell">      <span class="kr" style="font-weight: 600;">where</span></span>

</pre>

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569

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<pre style="margin: 0;">+<span id="LC569" class="line" lang="haskell">        <span class="n" style="color: #333;">arg_ty</span>   <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">stgArgType</span> <span class="n" style="color: #333;">arg</span></span>

</pre>

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570

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<pre style="margin: 0;">+<span id="LC570" class="line" lang="haskell">        <span class="n" style="color: #333;">arg_reps</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">typePrimRep</span> <span class="n" style="color: #333;">arg_ty</span></span>

</pre>

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</td>

<td class="diff-line-num new new_line" data-linenumber="571" 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">

571

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<pre style="margin: 0;">+<span id="LC571" class="line" lang="haskell">        <span class="n" style="color: #333;">hint</span>     <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">typeForeignHint</span> <span class="n" style="color: #333;">arg_ty</span></span>

</pre>

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</td>

<td class="diff-line-num new new_line" data-linenumber="572" 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">

572

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<pre style="margin: 0;">+<span id="LC572" class="line" lang="haskell"></span>

</pre>

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</td>

<td class="diff-line-num new new_line" data-linenumber="573" 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">

573

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<pre style="margin: 0;">+<span id="LC573" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- The minimum amount of information needed to determine</span></span>

</pre>

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</td>

<td class="diff-line-num new new_line" data-linenumber="574" 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">

574

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<pre style="margin: 0;">+<span id="LC574" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- the offset to apply to an argument to a foreign call.</span></span>

</pre>

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</td>

<td class="diff-line-num new new_line" data-linenumber="575" 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">

575

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<pre style="margin: 0;">+<span id="LC575" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See Note [Unlifted boxed arguments to foreign calls]</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="576" 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">

576

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<pre style="margin: 0;">+<span id="LC576" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">data</span> <span class="kt" style="color: #458; font-weight: 600;">StgFArgType</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="577" 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">

577

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<pre style="margin: 0;">+<span id="LC577" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">StgPlainType</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="578" 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">

578

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<pre style="margin: 0;">+<span id="LC578" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">|</span> <span class="kt" style="color: #458; font-weight: 600;">StgArrayType</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="579" 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">

579

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<pre style="margin: 0;">+<span id="LC579" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">|</span> <span class="kt" style="color: #458; font-weight: 600;">StgSmallArrayType</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="580" 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">

580

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<pre style="margin: 0;">+<span id="LC580" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">|</span> <span class="kt" style="color: #458; font-weight: 600;">StgByteArrayType</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="581" 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">

581

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<pre style="margin: 0;">+<span id="LC581" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="582" 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">

582

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<pre style="margin: 0;">+<span id="LC582" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See Note [Unlifted boxed arguments to foreign calls]</span></span>

</pre>

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583

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<pre style="margin: 0;">+<span id="LC583" class="line" lang="haskell"><span class="n" style="color: #333;">add_shim</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">DynFlags</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">StgFArgType</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">CmmExpr</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">CmmExpr</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="584" 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">

584

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<pre style="margin: 0;">+<span id="LC584" class="line" lang="haskell"><span class="n" style="color: #333;">add_shim</span> <span class="n" style="color: #333;">dflags</span> <span class="n" style="color: #333;">ty</span> <span class="n" style="color: #333;">expr</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">ty</span> <span class="kr" style="font-weight: 600;">of</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="585" 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">

585

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<pre style="margin: 0;">+<span id="LC585" class="line" lang="haskell">  <span class="kt" style="color: #458; font-weight: 600;">StgPlainType</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">expr</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="586" 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">

586

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<pre style="margin: 0;">+<span id="LC586" class="line" lang="haskell">  <span class="kt" style="color: #458; font-weight: 600;">StgArrayType</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">cmmOffsetB</span> <span class="n" style="color: #333;">dflags</span> <span class="n" style="color: #333;">expr</span> <span class="p">(</span><span class="n" style="color: #333;">arrPtrsHdrSize</span> <span class="n" style="color: #333;">dflags</span><span class="p">)</span></span>

</pre>

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587

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<pre style="margin: 0;">+<span id="LC587" class="line" lang="haskell">  <span class="kt" style="color: #458; font-weight: 600;">StgSmallArrayType</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">cmmOffsetB</span> <span class="n" style="color: #333;">dflags</span> <span class="n" style="color: #333;">expr</span> <span class="p">(</span><span class="n" style="color: #333;">smallArrPtrsHdrSize</span> <span class="n" style="color: #333;">dflags</span><span class="p">)</span></span>

</pre>

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588

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<pre style="margin: 0;">+<span id="LC588" class="line" lang="haskell">  <span class="kt" style="color: #458; font-weight: 600;">StgByteArrayType</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">cmmOffsetB</span> <span class="n" style="color: #333;">dflags</span> <span class="n" style="color: #333;">expr</span> <span class="p">(</span><span class="n" style="color: #333;">arrWordsHdrSize</span> <span class="n" style="color: #333;">dflags</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="589" 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">

589

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<pre style="margin: 0;">+<span id="LC589" class="line" lang="haskell"></span>

</pre>

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</td>

<td class="diff-line-num new new_line" data-linenumber="590" 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">

590

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<pre style="margin: 0;">+<span id="LC590" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- From a function, extract information needed to determine</span></span>

</pre>

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</td>

<td class="diff-line-num new new_line" data-linenumber="591" 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">

591

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<pre style="margin: 0;">+<span id="LC591" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- the offset of each argument when used as a C FFI argument.</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="592" 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">

592

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<pre style="margin: 0;">+<span id="LC592" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See Note [Unlifted boxed arguments to foreign calls]</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="593" 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">

593

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<pre style="margin: 0;">+<span id="LC593" class="line" lang="haskell"><span class="n" style="color: #333;">collectStgFArgTypes</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Type</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">StgFArgType</span><span class="p">]</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="594" 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">

594

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<pre style="margin: 0;">+<span id="LC594" class="line" lang="haskell"><span class="n" style="color: #333;">collectStgFArgTypes</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">go</span> <span class="kt" style="color: #458; font-weight: 600;">[]</span> </span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="595" 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">

595

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<pre style="margin: 0;">+<span id="LC595" class="line" lang="haskell">  <span class="kr" style="font-weight: 600;">where</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="596" 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">

596

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<pre style="margin: 0;">+<span id="LC596" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">-- Skip foralls</span></span>

</pre>

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597

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<pre style="margin: 0;">+<span id="LC597" class="line" lang="haskell">    <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">bs</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">ForAllTy</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">res</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">bs</span> <span class="n" style="color: #333;">res</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="598" 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="LC598" class="line" lang="haskell">    <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">bs</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">AppTy</span><span class="p">{})</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">reverse</span> <span class="n" style="color: #333;">bs</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="599" 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">

599

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<pre style="margin: 0;">+<span id="LC599" class="line" lang="haskell">    <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">bs</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">TyConApp</span><span class="p">{})</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">reverse</span> <span class="n" style="color: #333;">bs</span></span>

</pre>

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600

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<pre style="margin: 0;">+<span id="LC600" class="line" lang="haskell">    <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">bs</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">LitTy</span><span class="p">{})</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">reverse</span> <span class="n" style="color: #333;">bs</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="601" 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="LC601" class="line" lang="haskell">    <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">bs</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">TyVarTy</span><span class="p">{})</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">reverse</span> <span class="n" style="color: #333;">bs</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="602" 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">

602

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<pre style="margin: 0;">+<span id="LC602" class="line" lang="haskell">    <span class="n" style="color: #333;">go</span>  <span class="kr" style="font-weight: 600;">_</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">CastTy</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;">"myCollectTypeArgs: CastTy"</span></span>

</pre>

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603

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<pre style="margin: 0;">+<span id="LC603" class="line" lang="haskell">    <span class="n" style="color: #333;">go</span>  <span class="kr" style="font-weight: 600;">_</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">CoercionTy</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;">"myCollectTypeArgs: CoercionTy"</span></span>

</pre>

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604

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<pre style="margin: 0;">+<span id="LC604" class="line" lang="haskell">    <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">bs</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">FunTy</span> <span class="p">{</span><span class="n" style="color: #333;">ft_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;">ft_res</span><span class="o" style="font-weight: 600;">=</span><span class="n" style="color: #333;">res</span><span class="p">})</span> <span class="o" style="font-weight: 600;">=</span></span>

</pre>

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605

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<pre style="margin: 0;">+<span id="LC605" class="line" lang="haskell">      <span class="n" style="color: #333;">go</span> <span class="p">(</span><span class="n" style="color: #333;">typeToStgFArgType</span> <span class="n" style="color: #333;">arg</span><span class="o" style="font-weight: 600;">:</span><span class="n" style="color: #333;">bs</span><span class="p">)</span> <span class="n" style="color: #333;">res</span></span>

</pre>

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606

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<pre style="margin: 0;">+<span id="LC606" class="line" lang="haskell"></span>

</pre>

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607

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<pre style="margin: 0;">+<span id="LC607" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Choose the offset based on the type. For anything other</span></span>

</pre>

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608

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<pre style="margin: 0;">+<span id="LC608" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- than an unlifted boxed type, there is no offset.</span></span>

</pre>

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609

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<pre style="margin: 0;">+<span id="LC609" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See Note [Unlifted boxed arguments to foreign calls]</span></span>

</pre>

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610

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<pre style="margin: 0;">+<span id="LC610" class="line" lang="haskell"><span class="n" style="color: #333;">typeToStgFArgType</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Type</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">StgFArgType</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="611" 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">

611

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<pre style="margin: 0;">+<span id="LC611" class="line" lang="haskell"><span class="n" style="color: #333;">typeToStgFArgType</span> <span class="n" style="color: #333;">typ</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="612" 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="LC612" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">tycon</span> <span class="o" style="font-weight: 600;">==</span> <span class="n" style="color: #333;">arrayPrimTyCon</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">StgArrayType</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC613" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">tycon</span> <span class="o" style="font-weight: 600;">==</span> <span class="n" style="color: #333;">mutableArrayPrimTyCon</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">StgArrayType</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="614" 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="LC614" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">tycon</span> <span class="o" style="font-weight: 600;">==</span> <span class="n" style="color: #333;">arrayArrayPrimTyCon</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">StgArrayType</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="615" 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="LC615" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">tycon</span> <span class="o" style="font-weight: 600;">==</span> <span class="n" style="color: #333;">mutableArrayArrayPrimTyCon</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">StgArrayType</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="616" 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="LC616" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">tycon</span> <span class="o" style="font-weight: 600;">==</span> <span class="n" style="color: #333;">smallArrayPrimTyCon</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">StgSmallArrayType</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="617" 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="LC617" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">tycon</span> <span class="o" style="font-weight: 600;">==</span> <span class="n" style="color: #333;">smallMutableArrayPrimTyCon</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">StgSmallArrayType</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="618" 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="LC618" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">tycon</span> <span class="o" style="font-weight: 600;">==</span> <span class="n" style="color: #333;">byteArrayPrimTyCon</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">StgByteArrayType</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="619" 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="LC619" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">tycon</span> <span class="o" style="font-weight: 600;">==</span> <span class="n" style="color: #333;">mutableByteArrayPrimTyCon</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">StgByteArrayType</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC620" 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="kt" style="color: #458; font-weight: 600;">StgPlainType</span></span>

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532

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621

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<pre style="margin: 0;"> <span id="LC621" class="line" lang="haskell">  <span class="kr" style="font-weight: 600;">where</span></span>

</pre>

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533

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<pre style="margin: 0;">-<span id="LC533" class="line" lang="haskell">    <span class="n" style="color: #333;">tycon</span>           <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tyConAppTyCon</span> <span class="p">(</span><span class="n" style="color: #333;">unwrapType</span> <span class="n" style="color: #333;">arg_ty</span><span class="p">)</span></span>

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534

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<pre style="margin: 0;">-<span id="LC534" class="line" lang="haskell">        <span class="c1" style="color: #998; font-style: italic;">-- should be a tycon app, since this is a foreign call</span></span></pre>

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622

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<pre style="margin: 0;">+<span id="LC622" class="line" lang="haskell">  <span class="c1" style="color: #998; font-style: italic;">-- should be a tycon app, since this is a foreign call</span></span>

</pre>

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623

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<pre style="margin: 0;">+<span id="LC623" class="line" lang="haskell">  <span class="n" style="color: #333;">tycon</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tyConAppTyCon</span> <span class="p">(</span><span class="n" style="color: #333;">unwrapType</span> <span class="n" style="color: #333;">typ</span><span class="p">)</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC624" class="line" lang="haskell"></span></pre>

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<li id="731b07c16b2f4bb31dd7defa4ceef54e74473cc7">

<a href="https://gitlab.haskell.org/ghc/ghc/commit/db78ac6f5d69618ff143ab4b572e7f58a1805687#731b07c16b2f4bb31dd7defa4ceef54e74473cc7"><strong>compiler/codeGen/StgCmmPrim.hs</strong></a>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="71" 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="71" 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">@@ -71,8 +71,8 @@ cgOpApp :: StgOp        -- The op</td>

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71

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<pre style="margin: 0;"> <span id="LC71" class="line" lang="haskell">        <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">FCode</span> <span class="kt" style="color: #458; font-weight: 600;">ReturnKind</span></span>

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72

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<pre style="margin: 0;"> <span id="LC72" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;"> <span id="LC73" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Foreign calls</span></span>

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<pre style="margin: 0;">-<span id="LC74" class="line" lang="haskell"><span class="n" style="color: #333;">cgOpApp</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">StgFCallOp</span> <span class="n" style="color: #333;">fcall</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">)</span> <span class="n" style="color: #333;">stg_args</span> <span class="n" style="color: #333;">res_ty</span></span>

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75

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<pre style="margin: 0;">-<span id="LC75" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">cgForeignCall</span> <span class="n" style="color: #333;">fcall</span> <span class="n" style="color: #333;">stg_args</span> <span class="n" style="color: #333;">res_ty</span></span>

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<pre style="margin: 0;">+<span id="LC74" class="line" lang="haskell"><span class="n" style="color: #333;">cgOpApp</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">StgFCallOp</span> <span class="n" style="color: #333;">fcall</span> <span class="n" style="color: #333;"><span class="idiff left">ty</span></span><span class="idiff right"> </span><span class="kr" style="font-weight: 600;">_</span><span class="p">)</span> <span class="n" style="color: #333;">stg_args</span> <span class="n" style="color: #333;">res_ty</span></span>

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75

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<pre style="margin: 0;">+<span id="LC75" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">cgForeignCall</span> <span class="n" style="color: #333;">fcall</span> <span class="n" style="color: #333;"><span class="idiff left">ty</span></span><span class="idiff right"> </span><span class="n" style="color: #333;">stg_args</span> <span class="n" style="color: #333;">res_ty</span></span>

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76

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<pre style="margin: 0;"> <span id="LC76" class="line" lang="haskell">      <span class="c1" style="color: #998; font-style: italic;">-- Note [Foreign call results]</span></span>

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<pre style="margin: 0;"> <span id="LC77" class="line" lang="haskell"></span>

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78

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<pre style="margin: 0;"> <span id="LC78" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- tagToEnum# is special: we need to pull the constructor</span></span>

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<li id="268617cbbb60bb1447a471b156b77fb5b7ff05cc">

<a href="https://gitlab.haskell.org/ghc/ghc/commit/db78ac6f5d69618ff143ab4b572e7f58a1805687#268617cbbb60bb1447a471b156b77fb5b7ff05cc"><strong>compiler/stgSyn/CoreToStg.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">@@ -539,7 +539,7 @@ coreToStgApp _ f args ticks = do</td>

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<pre style="margin: 0;"> <span id="LC539" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;"> <span id="LC540" class="line" lang="haskell">                <span class="c1" style="color: #998; font-style: italic;">-- A regular foreign call.</span></span>

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<pre style="margin: 0;"> <span id="LC541" class="line" lang="haskell">                <span class="kt" style="color: #458; font-weight: 600;">FCallId</span> <span class="n" style="color: #333;">call</span>     <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">ASSERT</span><span class="p">(</span> <span class="n" style="color: #333;">saturated</span> <span class="p">)</span></span>

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<pre style="margin: 0;">-<span id="LC542" class="line" lang="haskell">                                    <span class="kt" style="color: #458; font-weight: 600;">StgOpApp</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">StgFCallOp</span> <span class="n" style="color: #333;">call</span> <span class="p">(</span><span class="n" style="color: #333;">idUnique</span> <span class="n" style="color: #333;">f</span><span class="p">))</span> <span class="n" style="color: #333;">args'</span> <span class="n" style="color: #333;">res_ty</span></span>

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<pre style="margin: 0;">+<span id="LC542" class="line" lang="haskell">                                    <span class="kt" style="color: #458; font-weight: 600;">StgOpApp</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">StgFCallOp</span> <span class="n" style="color: #333;">call</span> <span class="p">(</span><span class="n" style="color: #333;">id<span class="idiff left">Type</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">f</span></span><span class="p"><span class="idiff">)</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="n" style="color: #333;"><span class="idiff right">id</span>Unique</span> <span class="n" style="color: #333;">f</span><span class="p">))</span> <span class="n" style="color: #333;">args'</span> <span class="n" style="color: #333;">res_ty</span></span>

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<pre style="margin: 0;"> <span id="LC543" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;"> <span id="LC544" class="line" lang="haskell">                <span class="kt" style="color: #458; font-weight: 600;">TickBoxOpId</span> <span class="p">{}</span>   <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">pprPanic</span> <span class="s" style="color: #d14;">"coreToStg TickBox"</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">ppr</span> <span class="p">(</span><span class="n" style="color: #333;">f</span><span class="p">,</span><span class="n" style="color: #333;">args'</span><span class="p">)</span></span>

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<pre style="margin: 0;"> <span id="LC545" class="line" lang="haskell">                <span class="n" style="color: #333;">_other</span>           <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">StgApp</span> <span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">args'</span></span>

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<br>

</li>

<li id="da0b7b01ca96b39115ee464b3e723c9fd3df8136">

<a href="https://gitlab.haskell.org/ghc/ghc/commit/db78ac6f5d69618ff143ab4b572e7f58a1805687#da0b7b01ca96b39115ee464b3e723c9fd3df8136"><strong>compiler/stgSyn/StgSyn.hs</strong></a>

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<td class="diff-line-num unfold js-unfold new_line" data-linenumber="686" 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>

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<pre style="margin: 0;"> <span id="LC686" class="line" lang="haskell"></span>

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<pre style="margin: 0;"> <span id="LC687" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">|</span> <span class="kt" style="color: #458; font-weight: 600;">StgPrimCallOp</span> <span class="kt" style="color: #458; font-weight: 600;">PrimCall</span></span>

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<pre style="margin: 0;"> <span id="LC688" class="line" lang="haskell"></span>

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<pre style="margin: 0;">-<span id="LC689" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">|</span> <span class="kt" style="color: #458; font-weight: 600;">StgFCallOp</span> <span class="kt" style="color: #458; font-weight: 600;">ForeignCall</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left right">Unique</span></span></span>

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<pre style="margin: 0;">+<span id="LC689" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">|</span> <span class="kt" style="color: #458; font-weight: 600;">StgFCallOp</span> <span class="kt" style="color: #458; font-weight: 600;">ForeignCall</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left">Type</span></span><span class="idiff"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">Unique</span></span><span class="idiff right"> </span></span>

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<pre style="margin: 0;"> <span id="LC690" class="line" lang="haskell">        <span class="c1" style="color: #998; font-style: italic;">-- The Unique is occasionally needed by the C pretty-printer</span></span>

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<pre style="margin: 0;"> <span id="LC691" class="line" lang="haskell">        <span class="c1" style="color: #998; font-style: italic;">-- (which lacks a unique supply), notably when generating a</span></span>

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<pre style="margin: 0;">-<span id="LC692" class="line" lang="haskell">        <span class="c1" style="color: #998; font-style: italic;">-- typedef for foreign-export-dynamic</span></span>

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<pre style="margin: 0;">+<span id="LC692" class="line" lang="haskell">        <span class="c1" style="color: #998; font-style: italic;">-- typedef for foreign-export-dynamic. The Type, which is</span></span>

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<pre style="margin: 0;">+<span id="LC693" class="line" lang="haskell">        <span class="c1" style="color: #998; font-style: italic;">-- obtained from the foreign import declaration itself, is</span></span>

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<pre style="margin: 0;">+<span id="LC694" class="line" lang="haskell">        <span class="c1" style="color: #998; font-style: italic;">-- needed by the stg-to-cmm pass to determine the offset to</span></span>

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<pre style="margin: 0;">+<span id="LC695" class="line" lang="haskell">        <span class="c1" style="color: #998; font-style: italic;">-- apply to unlifted boxed arguments in StgCmmForeign.</span></span>

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<pre style="margin: 0;">+<span id="LC696" class="line" lang="haskell">        <span class="c1" style="color: #998; font-style: italic;">-- See Note [Unlifted boxed arguments to foreign calls]</span></span>

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<pre style="margin: 0;"> <span id="LC697" class="line" lang="haskell"></span>

</pre>

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698

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<pre style="margin: 0;"> <span id="LC698" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">{-</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC699" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">************************************************************************</span></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="860" 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>

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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">@@ -860,7 +864,7 @@ pprStgAlt indent (con, params, expr)</td>

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860

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<pre style="margin: 0;"> <span id="LC864" class="line" lang="haskell"><span class="n" style="color: #333;">pprStgOp</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">StgOp</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">SDoc</span></span>

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<pre style="margin: 0;"> <span id="LC865" class="line" lang="haskell"><span class="n" style="color: #333;">pprStgOp</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">StgPrimOp</span>  <span class="n" style="color: #333;">op</span><span class="p">)</span>   <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">op</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC866" class="line" lang="haskell"><span class="n" style="color: #333;">pprStgOp</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">StgPrimCallOp</span> <span class="n" style="color: #333;">op</span><span class="p">)</span><span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">op</span></span>

</pre>

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<pre style="margin: 0;">-<span id="LC863" class="line" lang="haskell"><span class="n" style="color: #333;">pprStgOp</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">StgFCallOp</span> <span class="n" style="color: #333;">op</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;">ppr</span> <span class="n" style="color: #333;">op</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC867" class="line" lang="haskell"><span class="n" style="color: #333;">pprStgOp</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">StgFCallOp</span> <span class="n" style="color: #333;">op</span> <span class="kr" style="font-weight: 600;">_</span><span class="idiff left"> </span><span class="kr" style="font-weight: 600;"><span class="idiff right">_</span></span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">op</span></span>

</pre>

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868

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<pre style="margin: 0;"> <span id="LC868" class="line" lang="haskell"></span>

</pre>

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865

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869

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<pre style="margin: 0;"> <span id="LC869" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">instance</span> <span class="kt" style="color: #458; font-weight: 600;">Outputable</span> <span class="kt" style="color: #458; font-weight: 600;">AltType</span> <span class="kr" style="font-weight: 600;">where</span></span>

</pre>

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<td class="diff-line-num new_line" data-linenumber="870" 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">

870

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<pre style="margin: 0;"> <span id="LC870" class="line" lang="haskell">  <span class="n" style="color: #333;">ppr</span> <span class="kt" style="color: #458; font-weight: 600;">PolyAlt</span>         <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"Polymorphic"</span></span>

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<br>

</li>

<li id="a7e5813f0bf3dd985b53ad4d03db88386dd4c99f">

<a href="https://gitlab.haskell.org/ghc/ghc/commit/db78ac6f5d69618ff143ab4b572e7f58a1805687#a7e5813f0bf3dd985b53ad4d03db88386dd4c99f"><strong>testsuite/tests/ffi/should_compile/ReducingFfiSignature.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 ForeignFunctionInterface #-}</span></span>

</pre>

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2

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<pre style="margin: 0;">+<span id="LC2" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# LANGUAGE TypeFamilies #-}</span></span>

</pre>

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3

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<pre style="margin: 0;">+<span id="LC3" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# LANGUAGE UnliftedFFITypes #-}</span></span>

</pre>

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4

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<pre style="margin: 0;">+<span id="LC4" class="line" lang="haskell"></span>

</pre>

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5

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<pre style="margin: 0;">+<span id="LC5" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">module</span> <span class="nn" style="color: #555;">ReducingFfiSignature</span></span>

</pre>

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6

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<pre style="margin: 0;">+<span id="LC6" class="line" lang="haskell">  <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;">c_pow_1</span></span>

</pre>

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7

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<pre style="margin: 0;">+<span id="LC7" class="line" lang="haskell">  <span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">c_pow_2</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="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">c_pow_3</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="p">)</span> <span class="kr" style="font-weight: 600;">where</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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11

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<pre style="margin: 0;">+<span id="LC11" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Foreign.C.Types</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">CDouble</span><span class="p">(</span><span class="o" style="font-weight: 600;">..</span><span class="p">))</span></span>

</pre>

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12

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<pre style="margin: 0;">+<span id="LC12" 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>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="13" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

13

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<pre style="margin: 0;">+<span id="LC13" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="14" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

14

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<pre style="margin: 0;">+<span id="LC14" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="n" style="color: #333;">family</span> <span class="kt" style="color: #458; font-weight: 600;">Foo</span> <span class="p">(</span><span class="n" style="color: #333;">x</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>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="15" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

15

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<pre style="margin: 0;">+<span id="LC15" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="16" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC16" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kr" style="font-weight: 600;">instance</span> <span class="kt" style="color: #458; font-weight: 600;">Foo</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">CDouble</span></span>

</pre>

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<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;">type</span> <span class="kr" style="font-weight: 600;">instance</span> <span class="kt" style="color: #458; font-weight: 600;">Foo</span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">CDouble</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">CDouble</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="18" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

18

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<pre style="margin: 0;">+<span id="LC18" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kr" style="font-weight: 600;">instance</span> <span class="kt" style="color: #458; font-weight: 600;">Foo</span> <span class="kt" style="color: #458; font-weight: 600;">CDouble</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">CDouble</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">CDouble</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">CDouble</span></span>

</pre>

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19

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<pre style="margin: 0;">+<span id="LC19" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;">+<span id="LC20" class="line" lang="haskell"><span class="n" style="color: #333;">foreign</span> <span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">ccall</span> <span class="s" style="color: #d14;">"math.h pow"</span></span>

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<pre style="margin: 0;">+<span id="LC21" class="line" lang="haskell">  <span class="n" style="color: #333;">c_pow_1</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">CDouble</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">CDouble</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Foo</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC22" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;">+<span id="LC23" class="line" lang="haskell"><span class="n" style="color: #333;">foreign</span> <span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">ccall</span> <span class="s" style="color: #d14;">"math.h pow"</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC24" class="line" lang="haskell">  <span class="n" style="color: #333;">c_pow_2</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">CDouble</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Foo</span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC25" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;">+<span id="LC26" class="line" lang="haskell"><span class="n" style="color: #333;">foreign</span> <span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">ccall</span> <span class="s" style="color: #d14;">"math.h pow"</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC27" class="line" lang="haskell">  <span class="n" style="color: #333;">c_pow_3</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Foo</span> <span class="kt" style="color: #458; font-weight: 600;">CDouble</span></span></pre>

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<br>

</li>

<li id="2d522582226c5b506f235d327c55398645c7877c">

<a href="https://gitlab.haskell.org/ghc/ghc/commit/db78ac6f5d69618ff143ab4b572e7f58a1805687#2d522582226c5b506f235d327c55398645c7877c"><strong>testsuite/tests/ffi/should_compile/all.T</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">@@ -23,6 +23,7 @@ test('cc011', normal, compile, [''])</td>

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<pre style="margin: 0;"> <span id="LC23" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">(</span><span class="s" style="color: #d14;">'cc012'</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="LC24" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">(</span><span class="s" style="color: #d14;">'cc013'</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="LC25" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">(</span><span class="s" style="color: #d14;">'cc014'</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="LC26" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">(</span><span class="s" style="color: #d14;">'ReducingFfiSignature'</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="LC27" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">(</span><span class="s" style="color: #d14;">'ffi-deriv1'</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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<td class="diff-line-num new_line" data-linenumber="28" 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="LC28" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">(</span><span class="s" style="color: #d14;">'T1357'</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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<td class="diff-line-num new_line" data-linenumber="29" 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="LC29" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">(</span><span class="s" style="color: #d14;">'T3624'</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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<br>

</li>

<li id="c148e2393c0c59e15b422e561ec8182d89aaaea0">

<a href="https://gitlab.haskell.org/ghc/ghc/commit/db78ac6f5d69618ff143ab4b572e7f58a1805687#c148e2393c0c59e15b422e561ec8182d89aaaea0"><strong>testsuite/tests/ffi/should_fail/NonreducingFfiSignature.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 ForeignFunctionInterface #-}</span></span>

</pre>

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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 TypeFamilies #-}</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC3" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# LANGUAGE UnliftedFFITypes #-}</span></span>

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<pre style="margin: 0;">+<span id="LC4" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;">+<span id="LC5" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">module</span> <span class="nn" style="color: #555;">NonreducingFfiSignature</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">c_pow</span><span class="p">)</span> <span class="kr" style="font-weight: 600;">where</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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<pre style="margin: 0;">+<span id="LC7" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Foreign.C.Types</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">CDouble</span><span class="p">(</span><span class="o" style="font-weight: 600;">..</span><span class="p">))</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC8" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Data.Kind</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Type</span><span class="p">)</span></span>

</pre>

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9

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<pre style="margin: 0;">+<span id="LC9" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;">+<span id="LC10" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="n" style="color: #333;">family</span> <span class="kt" style="color: #458; font-weight: 600;">Foo</span> <span class="p">(</span><span class="n" style="color: #333;">x</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>

</pre>

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11

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<pre style="margin: 0;">+<span id="LC11" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;">+<span id="LC12" class="line" lang="haskell"><span class="n" style="color: #333;">foreign</span> <span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">ccall</span> <span class="s" style="color: #d14;">"math.h pow"</span></span>

</pre>

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13

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<pre style="margin: 0;">+<span id="LC13" class="line" lang="haskell">  <span class="n" style="color: #333;">c_pow</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">CDouble</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">CDouble</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Foo</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span></span></pre>

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<li id="f817bc0e574a53bbd4547e74fb30876ce7c9559e">

<a href="https://gitlab.haskell.org/ghc/ghc/commit/db78ac6f5d69618ff143ab4b572e7f58a1805687#f817bc0e574a53bbd4547e74fb30876ce7c9559e"><strong>testsuite/tests/ffi/should_fail/NonreducingFfiSignature.stderr</strong></a>

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1

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<pre style="margin: 0;">+<span id="LC1" class="line" lang="plaintext">NonreducingFfiSignature.hs:12:1:</span>

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<pre style="margin: 0;">+<span id="LC2" class="line" lang="plaintext">     Unacceptable result type in foreign declaration:</span>

</pre>

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<pre style="margin: 0;">+<span id="LC3" class="line" lang="plaintext">        ‘Foo Int’ cannot be marshalled in a foreign call</span>

</pre>

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4

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<pre style="margin: 0;">+<span id="LC4" class="line" lang="plaintext">     When checking declaration:</span>

</pre>

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<pre style="margin: 0;">+<span id="LC5" class="line" lang="plaintext">        foreign import ccall safe "math.h pow" c_pow</span>

</pre>

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<pre style="margin: 0;">+<span id="LC6" class="line" lang="plaintext">          :: CDouble -> CDouble -> Foo Int</span></pre>

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</li>

<li id="959604952ad853722a516e17c23d0cf7a5aa7815">

<a href="https://gitlab.haskell.org/ghc/ghc/commit/db78ac6f5d69618ff143ab4b572e7f58a1805687#959604952ad853722a516e17c23d0cf7a5aa7815"><strong>testsuite/tests/ffi/should_fail/all.T</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">@@ -10,6 +10,7 @@ test('ccfail004', [extra_files(['Ccfail004A.hs'])], multimod_compile_fail, ['ccf</td>

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<pre style="margin: 0;"> <span id="LC10" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">(</span><span class="s" style="color: #d14;">'ccfail005'</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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11

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<pre style="margin: 0;"> <span id="LC11" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">(</span><span class="s" style="color: #d14;">'ccall_value'</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="LC12" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">(</span><span class="s" style="color: #d14;">'capi_value_function'</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="LC13" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">(</span><span class="s" style="color: #d14;">'NonreducingFfiSignature'</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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13

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14

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<pre style="margin: 0;"> <span id="LC14" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">(</span><span class="s" style="color: #d14;">'T5664'</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;">'-v0'</span><span class="p">])</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC15" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">(</span><span class="s" style="color: #d14;">'T7506'</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="LC16" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">(</span><span class="s" style="color: #d14;">'T7243'</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="ac5631f34010f408a6ba390a97385726d3e1bf0e">

<a href="https://gitlab.haskell.org/ghc/ghc/commit/db78ac6f5d69618ff143ab4b572e7f58a1805687#ac5631f34010f408a6ba390a97385726d3e1bf0e"><strong>testsuite/tests/ffi/should_run/T16650a.hs</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="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# language GADTSyntax #-}</span></span>

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

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2

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<pre style="margin: 0;">+<span id="LC2" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# language KindSignatures #-}</span></span>

</pre>

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

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<td class="diff-line-num new new_line" data-linenumber="3" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC3" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# language UnliftedFFITypes #-}</span></span>

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

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<td class="diff-line-num new new_line" data-linenumber="4" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC4" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# language ForeignFunctionInterface #-}</span></span>

</pre>

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

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

</pre>

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<td class="diff-line-num new new_line" data-linenumber="6" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC6" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# language UnboxedTuples #-}</span></span>

</pre>

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7

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

</pre>

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8

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<pre style="margin: 0;">+<span id="LC8" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Test for shims when passing a ByteArray# to a foreign function.</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="9" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

9

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<pre style="margin: 0;">+<span id="LC9" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- The bad behavior here was initially observed in the MR</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC10" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- https://gitlab.haskell.org/ghc/ghc/merge_requests/939,</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC11" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- but this test has been named after issue #16650 since it</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC12" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- is closely related to the unexpected behavior there.</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC13" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;">+<span id="LC14" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Exts</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC15" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Word</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC16" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.IO</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC17" 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>

</pre>

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<pre style="margin: 0;">+<span id="LC18" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;">+<span id="LC19" 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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<pre style="margin: 0;">+<span id="LC20" 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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<pre style="margin: 0;">+<span id="LC21" class="line" lang="haskell">  <span class="n" style="color: #333;">mb0</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">luckySingleton</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC22" class="line" lang="haskell">  <span class="n" style="color: #333;">print</span> <span class="o" style="font-weight: 600;">=<<</span> <span class="n" style="color: #333;">readByteArray</span> <span class="n" style="color: #333;">mb0</span> <span class="mi" style="color: #099;">0</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC23" class="line" lang="haskell">  <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">box</span> <span class="n" style="color: #333;">mb0</span> <span class="kr" style="font-weight: 600;">of</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC24" class="line" lang="haskell">    <span class="kt" style="color: #458; font-weight: 600;">Box</span> <span class="n" style="color: #333;">x</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">print</span> <span class="o" style="font-weight: 600;">=<<</span> <span class="n" style="color: #333;">c_head_bytearray</span> <span class="p">(</span><span class="n" style="color: #333;">unsafeCoerce</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">x</span><span class="p">)</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC25" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;">+<span id="LC26" class="line" lang="haskell"><span class="n" style="color: #333;">foreign</span> <span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">ccall</span> <span class="n" style="color: #333;">unsafe</span> <span class="s" style="color: #d14;">"head_bytearray"</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC27" class="line" lang="haskell">  <span class="n" style="color: #333;">c_head_bytearray</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">MutableByteArray</span><span class="o" style="font-weight: 600;">#</span> <span class="kt" style="color: #458; font-weight: 600;">RealWorld</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">IO</span> <span class="kt" style="color: #458; font-weight: 600;">Word8</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC28" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="29" 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="LC29" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">data</span> <span class="kt" style="color: #458; font-weight: 600;">Box</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Type</span> <span class="kr" style="font-weight: 600;">where</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC30" class="line" lang="haskell">  <span class="kt" style="color: #458; font-weight: 600;">Box</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Any</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TYPE</span> <span class="sc" style="color: #d14;">'U</span><span class="err" style="color: #a61717; background-color: #e3d2d2;">n</span><span class="n" style="color: #333;">liftedRep</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Box</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC31" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="32" 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="LC32" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">data</span> <span class="kt" style="color: #458; font-weight: 600;">MutableByteArray</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Type</span> <span class="kr" style="font-weight: 600;">where</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="33" 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="LC33" class="line" lang="haskell">  <span class="kt" style="color: #458; font-weight: 600;">MutableByteArray</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">MutableByteArray</span><span class="o" style="font-weight: 600;">#</span> <span class="kt" style="color: #458; font-weight: 600;">RealWorld</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">MutableByteArray</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC34" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;">+<span id="LC35" class="line" lang="haskell"><span class="n" style="color: #333;">box</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">MutableByteArray</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Box</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="36" 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="LC36" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# noinline box #-}</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC37" class="line" lang="haskell"><span class="n" style="color: #333;">box</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">MutableByteArray</span> <span class="n" style="color: #333;">x</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">Box</span> <span class="p">(</span><span class="n" style="color: #333;">unsafeCoerce</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">x</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="38" 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="LC38" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="39" 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="LC39" class="line" lang="haskell"><span class="n" style="color: #333;">luckySingleton</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">IO</span> <span class="kt" style="color: #458; font-weight: 600;">MutableByteArray</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="40" 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="LC40" class="line" lang="haskell"><span class="n" style="color: #333;">luckySingleton</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">IO</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;">s0</span> <span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">newByteArray</span><span class="o" style="font-weight: 600;">#</span> <span class="mi" style="color: #099;">1</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">s0</span> <span class="kr" style="font-weight: 600;">of</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="41" 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="LC41" class="line" lang="haskell">  <span class="p">(</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">s1</span><span class="p">,</span> <span class="n" style="color: #333;">marr</span><span class="o" style="font-weight: 600;">#</span> <span class="o" style="font-weight: 600;">#</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">writeWord8Array</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">marr</span><span class="o" style="font-weight: 600;">#</span> <span class="mi" style="color: #099;">0</span><span class="o" style="font-weight: 600;">#</span> <span class="mi" style="color: #099;">42</span><span class="o" style="font-weight: 600;">##</span> <span class="n" style="color: #333;">s1</span> <span class="kr" style="font-weight: 600;">of</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="42" 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="LC42" class="line" lang="haskell">    <span class="n" style="color: #333;">s2</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">s2</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">MutableByteArray</span> <span class="n" style="color: #333;">marr</span><span class="o" style="font-weight: 600;">#</span> <span class="o" style="font-weight: 600;">#</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="43" 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="LC43" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;">+<span id="LC44" class="line" lang="haskell"><span class="n" style="color: #333;">readByteArray</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">MutableByteArray</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Int</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">IO</span> <span class="kt" style="color: #458; font-weight: 600;">Word8</span></span>

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<pre style="margin: 0;">+<span id="LC45" class="line" lang="haskell"><span class="n" style="color: #333;">readByteArray</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">MutableByteArray</span> <span class="n" style="color: #333;">b</span><span class="o" style="font-weight: 600;">#</span><span class="p">)</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">I</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">i</span><span class="o" style="font-weight: 600;">#</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">IO</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;">s0</span> <span class="o" style="font-weight: 600;">-></span></span>

</pre>

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46

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<pre style="margin: 0;">+<span id="LC46" class="line" lang="haskell">  <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">readWord8Array</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">b</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">i</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">s0</span> <span class="kr" style="font-weight: 600;">of</span></span>

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47

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<pre style="margin: 0;">+<span id="LC47" class="line" lang="haskell">    <span class="p">(</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">s1</span><span class="p">,</span> <span class="n" style="color: #333;">w</span> <span class="o" style="font-weight: 600;">#</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">s1</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">W8</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">w</span> <span class="o" style="font-weight: 600;">#</span><span class="p">)</span></span></pre>

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<br>

</li>

<li id="4d2d59cc53760e43a02f436de1c11670d264e133">

<a href="https://gitlab.haskell.org/ghc/ghc/commit/db78ac6f5d69618ff143ab4b572e7f58a1805687#4d2d59cc53760e43a02f436de1c11670d264e133"><strong>testsuite/tests/ffi/should_run/T16650a.stdout</strong></a>

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1

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<pre style="margin: 0;">+<span id="LC1" class="line" lang="plaintext">42</span>

</pre>

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2

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<pre style="margin: 0;">+<span id="LC2" class="line" lang="plaintext">42</span></pre>

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<br>

</li>

<li id="e1e9c1dbdb856798dfd55469d8b8158db35128b8">

<a href="https://gitlab.haskell.org/ghc/ghc/commit/db78ac6f5d69618ff143ab4b572e7f58a1805687#e1e9c1dbdb856798dfd55469d8b8158db35128b8"><strong>testsuite/tests/ffi/should_run/T16650a_c.c</strong></a>

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1

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<pre style="margin: 0;">+<span id="LC1" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#include <stdint.h></span></span>

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2

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<pre style="margin: 0;">+<span id="LC2" class="line" lang="c"></span>

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3

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<pre style="margin: 0;">+<span id="LC3" class="line" lang="c"><span class="c1" style="color: #998; font-style: italic;">// Take the first element of a byte array. The array</span></span>

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4

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<pre style="margin: 0;">+<span id="LC4" class="line" lang="c"><span class="c1" style="color: #998; font-style: italic;">// must have length >= 1.</span></span>

</pre>

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5

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<pre style="margin: 0;">+<span id="LC5" class="line" lang="c"><span class="kt" style="color: #458; font-weight: 600;">uint8_t</span> <span class="nf" style="color: #900; font-weight: 600;">head_bytearray</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">uint8_t</span> <span class="o" style="font-weight: 600;">*</span><span class="n" style="color: #333;">arr</span><span class="p">)</span> <span class="p">{</span></span>

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<pre style="margin: 0;">+<span id="LC6" class="line" lang="c">  <span class="k" style="font-weight: 600;">return</span> <span class="n" style="color: #333;">arr</span><span class="p">[</span><span class="mi" style="color: #099;">0</span><span class="p">];</span></span>

</pre>

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7

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

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</li>

<li id="15e06e98c80167eeb2f4865df32f52f8dd4a027a">

<a href="https://gitlab.haskell.org/ghc/ghc/commit/db78ac6f5d69618ff143ab4b572e7f58a1805687#15e06e98c80167eeb2f4865df32f52f8dd4a027a"><strong>testsuite/tests/ffi/should_run/T16650b.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="cp" style="color: #999; font-weight: 600;">{-# language GADTSyntax #-}</span></span>

</pre>

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2

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<pre style="margin: 0;">+<span id="LC2" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# language KindSignatures #-}</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="3" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

3

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<pre style="margin: 0;">+<span id="LC3" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# language UnliftedFFITypes #-}</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="cp" style="color: #999; font-weight: 600;">{-# language ForeignFunctionInterface #-}</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;">{-# language MagicHash #-}</span></span>

</pre>

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6

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<pre style="margin: 0;">+<span id="LC6" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# language UnboxedTuples #-}</span></span>

</pre>

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7

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

</pre>

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<td class="diff-line-num new new_line" data-linenumber="8" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

8

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<pre style="margin: 0;">+<span id="LC8" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Test for shims when passing an array of unlifted values</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="9" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

9

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<pre style="margin: 0;">+<span id="LC9" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- to a foreign function.</span></span>

</pre>

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10

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<pre style="margin: 0;">+<span id="LC10" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See test T16650a for more commentary.</span></span>

</pre>

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11

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<pre style="margin: 0;">+<span id="LC11" class="line" lang="haskell"></span>

</pre>

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12

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<pre style="margin: 0;">+<span id="LC12" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Exts</span></span>

</pre>

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13

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<pre style="margin: 0;">+<span id="LC13" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Word</span></span>

</pre>

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14

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<pre style="margin: 0;">+<span id="LC14" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.IO</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC15" 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>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="16" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

16

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<pre style="margin: 0;">+<span id="LC16" class="line" lang="haskell"></span>

</pre>

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17

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<pre style="margin: 0;">+<span id="LC17" 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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<td class="diff-line-num new new_line" data-linenumber="18" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

18

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<pre style="margin: 0;">+<span id="LC18" 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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<pre style="margin: 0;">+<span id="LC19" class="line" lang="haskell">  <span class="n" style="color: #333;">mb0</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">luckySingleton</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="20" 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="LC20" class="line" lang="haskell">  <span class="n" style="color: #333;">mb1</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">luckySingleton</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="21" 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="LC21" class="line" lang="haskell">  <span class="n" style="color: #333;">mbs</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">newByteArrays</span> <span class="mi" style="color: #099;">2</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="22" 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="LC22" class="line" lang="haskell">  <span class="n" style="color: #333;">writeByteArrays</span> <span class="n" style="color: #333;">mbs</span> <span class="mi" style="color: #099;">0</span> <span class="n" style="color: #333;">mb0</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC23" class="line" lang="haskell">  <span class="n" style="color: #333;">writeByteArrays</span> <span class="n" style="color: #333;">mbs</span> <span class="mi" style="color: #099;">1</span> <span class="n" style="color: #333;">mb0</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC24" class="line" lang="haskell">  <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">box</span> <span class="n" style="color: #333;">mbs</span> <span class="kr" style="font-weight: 600;">of</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC25" class="line" lang="haskell">    <span class="kt" style="color: #458; font-weight: 600;">Box</span> <span class="n" style="color: #333;">x</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">print</span> <span class="o" style="font-weight: 600;">=<<</span> <span class="n" style="color: #333;">c_is_doubleton_homogeneous</span> <span class="p">(</span><span class="n" style="color: #333;">unsafeCoerce</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">x</span><span class="p">)</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC26" class="line" lang="haskell">  <span class="n" style="color: #333;">writeByteArrays</span> <span class="n" style="color: #333;">mbs</span> <span class="mi" style="color: #099;">1</span> <span class="n" style="color: #333;">mb1</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC27" class="line" lang="haskell">  <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">box</span> <span class="n" style="color: #333;">mbs</span> <span class="kr" style="font-weight: 600;">of</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="28" 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="LC28" class="line" lang="haskell">    <span class="kt" style="color: #458; font-weight: 600;">Box</span> <span class="n" style="color: #333;">x</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">print</span> <span class="o" style="font-weight: 600;">=<<</span> <span class="n" style="color: #333;">c_is_doubleton_homogeneous</span> <span class="p">(</span><span class="n" style="color: #333;">unsafeCoerce</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">x</span><span class="p">)</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC29" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;">+<span id="LC30" class="line" lang="haskell"><span class="n" style="color: #333;">foreign</span> <span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">ccall</span> <span class="n" style="color: #333;">unsafe</span> <span class="s" style="color: #d14;">"is_doubleton_homogenous"</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC31" class="line" lang="haskell">  <span class="n" style="color: #333;">c_is_doubleton_homogeneous</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">MutableArrayArray</span><span class="o" style="font-weight: 600;">#</span> <span class="kt" style="color: #458; font-weight: 600;">RealWorld</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">IO</span> <span class="kt" style="color: #458; font-weight: 600;">Word8</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="32" 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">

32

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<pre style="margin: 0;">+<span id="LC32" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;">+<span id="LC33" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">data</span> <span class="kt" style="color: #458; font-weight: 600;">Box</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Type</span> <span class="kr" style="font-weight: 600;">where</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="34" 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="LC34" class="line" lang="haskell">  <span class="kt" style="color: #458; font-weight: 600;">Box</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Any</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TYPE</span> <span class="sc" style="color: #d14;">'U</span><span class="err" style="color: #a61717; background-color: #e3d2d2;">n</span><span class="n" style="color: #333;">liftedRep</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Box</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="35" 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="LC35" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="36" 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="LC36" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- An array of bytes</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="37" 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="LC37" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">data</span> <span class="kt" style="color: #458; font-weight: 600;">MutableByteArray</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Type</span> <span class="kr" style="font-weight: 600;">where</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="38" 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="LC38" class="line" lang="haskell">  <span class="kt" style="color: #458; font-weight: 600;">MutableByteArray</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">MutableByteArray</span><span class="o" style="font-weight: 600;">#</span> <span class="kt" style="color: #458; font-weight: 600;">RealWorld</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">MutableByteArray</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="39" 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">

39

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<pre style="margin: 0;">+<span id="LC39" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="40" 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="LC40" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- A mutable array of mutable byte arrays</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="41" 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="LC41" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">data</span> <span class="kt" style="color: #458; font-weight: 600;">MutableByteArrays</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="LC42" class="line" lang="haskell">  <span class="kt" style="color: #458; font-weight: 600;">MutableByteArrays</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">MutableArrayArray</span><span class="o" style="font-weight: 600;">#</span> <span class="kt" style="color: #458; font-weight: 600;">RealWorld</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">MutableByteArrays</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="43" 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="LC43" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;">+<span id="LC44" class="line" lang="haskell"><span class="n" style="color: #333;">box</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">MutableByteArrays</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Box</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="45" 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="LC45" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# noinline box #-}</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC46" class="line" lang="haskell"><span class="n" style="color: #333;">box</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">MutableByteArrays</span> <span class="n" style="color: #333;">x</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">Box</span> <span class="p">(</span><span class="n" style="color: #333;">unsafeCoerce</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">x</span><span class="p">)</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC47" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;">+<span id="LC48" class="line" lang="haskell"><span class="n" style="color: #333;">luckySingleton</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">IO</span> <span class="kt" style="color: #458; font-weight: 600;">MutableByteArray</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC49" class="line" lang="haskell"><span class="n" style="color: #333;">luckySingleton</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">IO</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;">s0</span> <span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">newByteArray</span><span class="o" style="font-weight: 600;">#</span> <span class="mi" style="color: #099;">1</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">s0</span> <span class="kr" style="font-weight: 600;">of</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC50" class="line" lang="haskell">  <span class="p">(</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">s1</span><span class="p">,</span> <span class="n" style="color: #333;">marr</span><span class="o" style="font-weight: 600;">#</span> <span class="o" style="font-weight: 600;">#</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">writeWord8Array</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">marr</span><span class="o" style="font-weight: 600;">#</span> <span class="mi" style="color: #099;">0</span><span class="o" style="font-weight: 600;">#</span> <span class="mi" style="color: #099;">42</span><span class="o" style="font-weight: 600;">##</span> <span class="n" style="color: #333;">s1</span> <span class="kr" style="font-weight: 600;">of</span></span>

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<pre style="margin: 0;">+<span id="LC51" class="line" lang="haskell">    <span class="n" style="color: #333;">s2</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">s2</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">MutableByteArray</span> <span class="n" style="color: #333;">marr</span><span class="o" style="font-weight: 600;">#</span> <span class="o" style="font-weight: 600;">#</span><span class="p">)</span></span>

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<pre style="margin: 0;">+<span id="LC52" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;">+<span id="LC53" class="line" lang="haskell"><span class="n" style="color: #333;">readByteArray</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">MutableByteArray</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Int</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">IO</span> <span class="kt" style="color: #458; font-weight: 600;">Word8</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC54" class="line" lang="haskell"><span class="n" style="color: #333;">readByteArray</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">MutableByteArray</span> <span class="n" style="color: #333;">b</span><span class="o" style="font-weight: 600;">#</span><span class="p">)</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">I</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">i</span><span class="o" style="font-weight: 600;">#</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">IO</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;">s0</span> <span class="o" style="font-weight: 600;">-></span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC55" class="line" lang="haskell">  <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">readWord8Array</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">b</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">i</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">s0</span> <span class="kr" style="font-weight: 600;">of</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC56" class="line" lang="haskell">    <span class="p">(</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">s1</span><span class="p">,</span> <span class="n" style="color: #333;">w</span> <span class="o" style="font-weight: 600;">#</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">s1</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">W8</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">w</span> <span class="o" style="font-weight: 600;">#</span><span class="p">)</span></span>

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<pre style="margin: 0;">+<span id="LC57" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;">+<span id="LC58" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Write a mutable byte array to the array of mutable byte arrays</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="59" 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="LC59" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- at the given index.</span></span>

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<pre style="margin: 0;">+<span id="LC60" class="line" lang="haskell"><span class="n" style="color: #333;">writeByteArrays</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">MutableByteArrays</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Int</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">MutableByteArray</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>

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<pre style="margin: 0;">+<span id="LC61" class="line" lang="haskell"><span class="n" style="color: #333;">writeByteArrays</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">MutableByteArrays</span> <span class="n" style="color: #333;">maa</span><span class="o" style="font-weight: 600;">#</span><span class="p">)</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">I</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">i</span><span class="o" style="font-weight: 600;">#</span><span class="p">)</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">MutableByteArray</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;">IO</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;">s0</span> <span class="o" style="font-weight: 600;">-></span></span>

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<pre style="margin: 0;">+<span id="LC62" class="line" lang="haskell">  <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">writeMutableByteArrayArray</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">maa</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">i</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">a</span> <span class="n" style="color: #333;">s0</span> <span class="kr" style="font-weight: 600;">of</span></span>

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<pre style="margin: 0;">+<span id="LC63" class="line" lang="haskell">    <span class="n" style="color: #333;">s1</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">s1</span><span class="p">,</span> <span class="nb" style="color: #0086b3;">()</span> <span class="o" style="font-weight: 600;">#</span><span class="p">)</span></span>

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<pre style="margin: 0;">+<span id="LC64" class="line" lang="haskell"></span>

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<pre style="margin: 0;">+<span id="LC65" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Allocate a new array of mutable byte arrays. All elements are</span></span>

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<pre style="margin: 0;">+<span id="LC66" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- uninitialized. Attempting to read them will cause a crash.</span></span>

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<pre style="margin: 0;">+<span id="LC67" class="line" lang="haskell"><span class="n" style="color: #333;">newByteArrays</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">IO</span> <span class="kt" style="color: #458; font-weight: 600;">MutableByteArrays</span></span>

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<pre style="margin: 0;">+<span id="LC68" class="line" lang="haskell"><span class="n" style="color: #333;">newByteArrays</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">I</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">len</span><span class="o" style="font-weight: 600;">#</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">IO</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;">s0</span> <span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">newArrayArray</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">len</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">s0</span> <span class="kr" style="font-weight: 600;">of</span></span>

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<pre style="margin: 0;">+<span id="LC69" class="line" lang="haskell">  <span class="p">(</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">s1</span><span class="p">,</span> <span class="n" style="color: #333;">a</span><span class="o" style="font-weight: 600;">#</span> <span class="o" style="font-weight: 600;">#</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">s1</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">MutableByteArrays</span> <span class="n" style="color: #333;">a</span><span class="o" style="font-weight: 600;">#</span> <span class="o" style="font-weight: 600;">#</span><span class="p">)</span></span></pre>

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<li id="004a6787d0b874142497e2e3eb2ef9680587b87a">

<a href="https://gitlab.haskell.org/ghc/ghc/commit/db78ac6f5d69618ff143ab4b572e7f58a1805687#004a6787d0b874142497e2e3eb2ef9680587b87a"><strong>testsuite/tests/ffi/should_run/T16650b.stdout</strong></a>

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<pre style="margin: 0;">+<span id="LC1" class="line" lang="plaintext">1</span>

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<pre style="margin: 0;">+<span id="LC2" class="line" lang="plaintext">0</span></pre>

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<li id="cbdb500ea44f8e79a26002d89bb9498917705584">

<a href="https://gitlab.haskell.org/ghc/ghc/commit/db78ac6f5d69618ff143ab4b572e7f58a1805687#cbdb500ea44f8e79a26002d89bb9498917705584"><strong>testsuite/tests/ffi/should_run/T16650b_c.c</strong></a>

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<pre style="margin: 0;">+<span id="LC1" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#include <stdint.h></span></span>

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<pre style="margin: 0;">+<span id="LC2" class="line" lang="c"></span>

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<pre style="margin: 0;">+<span id="LC3" class="line" lang="c"><span class="c1" style="color: #998; font-style: italic;">// Check to see if the first two elements in the array are</span></span>

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<pre style="margin: 0;">+<span id="LC4" class="line" lang="c"><span class="c1" style="color: #998; font-style: italic;">// the same pointer. Technically, GHC only promises that this is</span></span>

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<pre style="margin: 0;">+<span id="LC5" class="line" lang="c"><span class="c1" style="color: #998; font-style: italic;">// deterministic for arrays of unlifted identity-supporting</span></span>

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<pre style="margin: 0;">+<span id="LC6" class="line" lang="c"><span class="c1" style="color: #998; font-style: italic;">// types (MutableByteArray#, TVar#, MutVar#, etc.). However,</span></span>

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7

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<pre style="margin: 0;">+<span id="LC7" class="line" lang="c"><span class="c1" style="color: #998; font-style: italic;">// in the tests, we assume that even for types that do not</span></span>

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<pre style="margin: 0;">+<span id="LC8" class="line" lang="c"><span class="c1" style="color: #998; font-style: italic;">// support identity (all lifted types, ByteArray#, Array#, etc.),</span></span>

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9

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<pre style="margin: 0;">+<span id="LC9" class="line" lang="c"><span class="c1" style="color: #998; font-style: italic;">// GHC initializes every element in an array to the same pointer</span></span>

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<pre style="margin: 0;">+<span id="LC10" class="line" lang="c"><span class="c1" style="color: #998; font-style: italic;">// with newArray#. This is the GHC's actual behavior, and if</span></span>

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<pre style="margin: 0;">+<span id="LC11" class="line" lang="c"><span class="c1" style="color: #998; font-style: italic;">// newArray# stopped behaving this way, even if it wouldn't</span></span>

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<pre style="margin: 0;">+<span id="LC12" class="line" lang="c"><span class="c1" style="color: #998; font-style: italic;">// be a semantic bug, it would be a performance bug. Consequently,</span></span>

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<pre style="margin: 0;">+<span id="LC13" class="line" lang="c"><span class="c1" style="color: #998; font-style: italic;">// we assume this behavior in tests T16650c and T16650d.</span></span>

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<pre style="margin: 0;">+<span id="LC14" class="line" lang="c"><span class="kt" style="color: #458; font-weight: 600;">uint8_t</span> <span class="nf" style="color: #900; font-weight: 600;">is_doubleton_homogenous</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">void</span> <span class="o" style="font-weight: 600;">**</span><span class="n" style="color: #333;">arr</span><span class="p">)</span> <span class="p">{</span></span>

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<pre style="margin: 0;">+<span id="LC15" class="line" lang="c">  <span class="k" style="font-weight: 600;">return</span> <span class="p">(</span><span class="n" style="color: #333;">arr</span><span class="p">[</span><span class="mi" style="color: #099;">0</span><span class="p">]</span> <span class="o" style="font-weight: 600;">==</span> <span class="n" style="color: #333;">arr</span><span class="p">[</span><span class="mi" style="color: #099;">1</span><span class="p">]);</span></span>

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<pre style="margin: 0;">+<span id="LC16" class="line" lang="c"><span class="p">}</span></span>

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<pre style="margin: 0;">+<span id="LC17" class="line" lang="c"></span></pre>

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<li id="3078312f527c4d01c4785687ab3c900d52b424dc">

<a href="https://gitlab.haskell.org/ghc/ghc/commit/db78ac6f5d69618ff143ab4b572e7f58a1805687#3078312f527c4d01c4785687ab3c900d52b424dc"><strong>testsuite/tests/ffi/should_run/T16650c.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 GADTSyntax #-}</span></span>

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2

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<pre style="margin: 0;">+<span id="LC2" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# language KindSignatures #-}</span></span>

</pre>

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3

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<pre style="margin: 0;">+<span id="LC3" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# language UnliftedFFITypes #-}</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="cp" style="color: #999; font-weight: 600;">{-# language ForeignFunctionInterface #-}</span></span>

</pre>

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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;">{-# language MagicHash #-}</span></span>

</pre>

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6

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<pre style="margin: 0;">+<span id="LC6" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# language UnboxedTuples #-}</span></span>

</pre>

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7

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<pre style="margin: 0;">+<span id="LC7" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# language ExplicitForAll #-}</span></span>

</pre>

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8

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<pre style="margin: 0;">+<span id="LC8" class="line" lang="haskell"></span>

</pre>

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9

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<pre style="margin: 0;">+<span id="LC9" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Test for shims when passing an array of lifted values</span></span>

</pre>

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10

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<pre style="margin: 0;">+<span id="LC10" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- to a foreign function.</span></span>

</pre>

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11

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<pre style="margin: 0;">+<span id="LC11" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See test T16650a for more commentary.</span></span>

</pre>

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12

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<pre style="margin: 0;">+<span id="LC12" class="line" lang="haskell"></span>

</pre>

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13

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<pre style="margin: 0;">+<span id="LC13" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Exts</span></span>

</pre>

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14

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<pre style="margin: 0;">+<span id="LC14" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Word</span></span>

</pre>

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15

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<pre style="margin: 0;">+<span id="LC15" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.IO</span></span>

</pre>

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16

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<pre style="margin: 0;">+<span id="LC16" 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>

</pre>

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17

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<pre style="margin: 0;">+<span id="LC17" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="18" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

18

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<pre style="margin: 0;">+<span id="LC18" 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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19

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<pre style="margin: 0;">+<span id="LC19" 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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20

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<pre style="margin: 0;">+<span id="LC20" class="line" lang="haskell">  <span class="n" style="color: #333;">mbs</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">newArray</span> <span class="mi" style="color: #099;">2</span> <span class="p">((</span><span class="o" style="font-weight: 600;">+</span><span class="mi" style="color: #099;">55</span><span class="p">)</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Int</span><span class="p">)</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC21" class="line" lang="haskell">  <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">box</span> <span class="n" style="color: #333;">mbs</span> <span class="kr" style="font-weight: 600;">of</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC22" class="line" lang="haskell">    <span class="kt" style="color: #458; font-weight: 600;">Box</span> <span class="n" style="color: #333;">x</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">print</span> <span class="o" style="font-weight: 600;">=<<</span> <span class="n" style="color: #333;">c_is_doubleton_homogeneous</span> <span class="p">(</span><span class="n" style="color: #333;">unsafeCoerce</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">x</span><span class="p">)</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC23" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;">+<span id="LC24" class="line" lang="haskell"><span class="n" style="color: #333;">foreign</span> <span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">ccall</span> <span class="n" style="color: #333;">unsafe</span> <span class="s" style="color: #d14;">"is_doubleton_homogenous"</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC25" class="line" lang="haskell">  <span class="n" style="color: #333;">c_is_doubleton_homogeneous</span> <span class="o" style="font-weight: 600;">::</span> <span class="n" style="color: #333;">forall</span> <span class="p">(</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;">Type</span><span class="p">)</span><span class="o" style="font-weight: 600;">.</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC26" class="line" lang="haskell">    <span class="kt" style="color: #458; font-weight: 600;">MutableArray</span><span class="o" style="font-weight: 600;">#</span> <span class="kt" style="color: #458; font-weight: 600;">RealWorld</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;">IO</span> <span class="kt" style="color: #458; font-weight: 600;">Word8</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC27" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;">+<span id="LC28" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">data</span> <span class="kt" style="color: #458; font-weight: 600;">Box</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Type</span> <span class="kr" style="font-weight: 600;">where</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC29" class="line" lang="haskell">  <span class="kt" style="color: #458; font-weight: 600;">Box</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Any</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TYPE</span> <span class="sc" style="color: #d14;">'U</span><span class="err" style="color: #a61717; background-color: #e3d2d2;">n</span><span class="n" style="color: #333;">liftedRep</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Box</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC30" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;">+<span id="LC31" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- An array of unary integer functions</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC32" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">data</span> <span class="kt" style="color: #458; font-weight: 600;">MutableArray</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Type</span> <span class="kr" style="font-weight: 600;">where</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="33" 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="LC33" class="line" lang="haskell">  <span class="kt" style="color: #458; font-weight: 600;">MutableArray</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">MutableArray</span><span class="o" style="font-weight: 600;">#</span> <span class="kt" style="color: #458; font-weight: 600;">RealWorld</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Int</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Int</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">MutableArray</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC34" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;">+<span id="LC35" class="line" lang="haskell"><span class="n" style="color: #333;">box</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">MutableArray</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Box</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="36" 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="LC36" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# noinline box #-}</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="37" 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="LC37" class="line" lang="haskell"><span class="n" style="color: #333;">box</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">MutableArray</span> <span class="n" style="color: #333;">x</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">Box</span> <span class="p">(</span><span class="n" style="color: #333;">unsafeCoerce</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">x</span><span class="p">)</span></span>

</pre>

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38

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<pre style="margin: 0;">+<span id="LC38" class="line" lang="haskell"></span>

</pre>

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39

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<pre style="margin: 0;">+<span id="LC39" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Allocate a new array of unary integer functions.</span></span>

</pre>

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40

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<pre style="margin: 0;">+<span id="LC40" class="line" lang="haskell"><span class="n" style="color: #333;">newArray</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Int</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Int</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">IO</span> <span class="kt" style="color: #458; font-weight: 600;">MutableArray</span></span>

</pre>

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41

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<pre style="margin: 0;">+<span id="LC41" class="line" lang="haskell"><span class="n" style="color: #333;">newArray</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">I</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">len</span><span class="o" style="font-weight: 600;">#</span><span class="p">)</span> <span class="n" style="color: #333;">x</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">IO</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;">s0</span> <span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">newArray</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">len</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">s0</span> <span class="kr" style="font-weight: 600;">of</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="42" 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">

42

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<pre style="margin: 0;">+<span id="LC42" class="line" lang="haskell">  <span class="p">(</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">s1</span><span class="p">,</span> <span class="n" style="color: #333;">a</span><span class="o" style="font-weight: 600;">#</span> <span class="o" style="font-weight: 600;">#</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">s1</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">MutableArray</span> <span class="n" style="color: #333;">a</span><span class="o" style="font-weight: 600;">#</span> <span class="o" style="font-weight: 600;">#</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="43" 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">

43

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<pre style="margin: 0;">+<span id="LC43" class="line" lang="haskell"></span></pre>

</td>

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<br>

</li>

<li id="ff673ac0f2860f6a6d0c3697ca0f289bc98cf63b">

<a href="https://gitlab.haskell.org/ghc/ghc/commit/db78ac6f5d69618ff143ab4b572e7f58a1805687#ff673ac0f2860f6a6d0c3697ca0f289bc98cf63b"><strong>testsuite/tests/ffi/should_run/T16650c.stdout</strong></a>

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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">1</span></pre>

</td>

</tr>

</table>

<br>

</li>

<li id="d3dc8c6cbc46cd21172fee7060f3698d7526c30d">

<a href="https://gitlab.haskell.org/ghc/ghc/commit/db78ac6f5d69618ff143ab4b572e7f58a1805687#d3dc8c6cbc46cd21172fee7060f3698d7526c30d"><strong>testsuite/tests/ffi/should_run/T16650c_c.c</strong></a>

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1

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<pre style="margin: 0;">+<span id="LC1" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#include <stdint.h></span></span>

</pre>

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2

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<pre style="margin: 0;">+<span id="LC2" class="line" lang="c"></span>

</pre>

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<pre style="margin: 0;">+<span id="LC3" class="line" lang="c"><span class="c1" style="color: #998; font-style: italic;">// See T16650b_c.c for commentary.</span></span>

</pre>

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4

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<pre style="margin: 0;">+<span id="LC4" class="line" lang="c"><span class="kt" style="color: #458; font-weight: 600;">uint8_t</span> <span class="nf" style="color: #900; font-weight: 600;">is_doubleton_homogenous</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">void</span> <span class="o" style="font-weight: 600;">**</span><span class="n" style="color: #333;">arr</span><span class="p">)</span> <span class="p">{</span></span>

</pre>

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5

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<pre style="margin: 0;">+<span id="LC5" class="line" lang="c">  <span class="k" style="font-weight: 600;">return</span> <span class="p">(</span><span class="n" style="color: #333;">arr</span><span class="p">[</span><span class="mi" style="color: #099;">0</span><span class="p">]</span> <span class="o" style="font-weight: 600;">==</span> <span class="n" style="color: #333;">arr</span><span class="p">[</span><span class="mi" style="color: #099;">1</span><span class="p">]);</span></span>

</pre>

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6

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

</pre>

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7

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

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<br>

</li>

<li id="84963a6e62c5eb5c328d4fcde3c495f3e2b80f24">

<a href="https://gitlab.haskell.org/ghc/ghc/commit/db78ac6f5d69618ff143ab4b572e7f58a1805687#84963a6e62c5eb5c328d4fcde3c495f3e2b80f24"><strong>testsuite/tests/ffi/should_run/T16650d.hs</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="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# language GADTSyntax #-}</span></span>

</pre>

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2

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<pre style="margin: 0;">+<span id="LC2" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# language KindSignatures #-}</span></span>

</pre>

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3

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<pre style="margin: 0;">+<span id="LC3" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# language UnliftedFFITypes #-}</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="cp" style="color: #999; font-weight: 600;">{-# language ForeignFunctionInterface #-}</span></span>

</pre>

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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;">{-# language MagicHash #-}</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="6" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

6

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<pre style="margin: 0;">+<span id="LC6" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# language UnboxedTuples #-}</span></span>

</pre>

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7

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<pre style="margin: 0;">+<span id="LC7" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# language ExplicitForAll #-}</span></span>

</pre>

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8

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<pre style="margin: 0;">+<span id="LC8" class="line" lang="haskell"></span>

</pre>

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9

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<pre style="margin: 0;">+<span id="LC9" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Test for shims when passing an array of lifted values</span></span>

</pre>

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10

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<pre style="margin: 0;">+<span id="LC10" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- to a foreign function.</span></span>

</pre>

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11

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<pre style="margin: 0;">+<span id="LC11" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See test T16650a for more commentary.</span></span>

</pre>

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12

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<pre style="margin: 0;">+<span id="LC12" class="line" lang="haskell"></span>

</pre>

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13

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<pre style="margin: 0;">+<span id="LC13" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Exts</span></span>

</pre>

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14

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<pre style="margin: 0;">+<span id="LC14" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Word</span></span>

</pre>

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15

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<pre style="margin: 0;">+<span id="LC15" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.IO</span></span>

</pre>

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16

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<pre style="margin: 0;">+<span id="LC16" 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>

</pre>

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<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>

</pre>

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18

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<pre style="margin: 0;">+<span id="LC18" 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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19

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<pre style="margin: 0;">+<span id="LC19" 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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<td class="diff-line-num new new_line" data-linenumber="20" 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">

20

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<pre style="margin: 0;">+<span id="LC20" class="line" lang="haskell">  <span class="n" style="color: #333;">mbs</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">newSmallArray</span> <span class="mi" style="color: #099;">2</span> <span class="p">((</span><span class="o" style="font-weight: 600;">+</span><span class="mi" style="color: #099;">55</span><span class="p">)</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Int</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="21" 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">

21

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<pre style="margin: 0;">+<span id="LC21" class="line" lang="haskell">  <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">box</span> <span class="n" style="color: #333;">mbs</span> <span class="kr" style="font-weight: 600;">of</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC22" class="line" lang="haskell">    <span class="kt" style="color: #458; font-weight: 600;">Box</span> <span class="n" style="color: #333;">x</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">print</span> <span class="o" style="font-weight: 600;">=<<</span> <span class="n" style="color: #333;">c_is_doubleton_homogeneous</span> <span class="p">(</span><span class="n" style="color: #333;">unsafeCoerce</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">x</span><span class="p">)</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC23" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;">+<span id="LC24" class="line" lang="haskell"><span class="n" style="color: #333;">foreign</span> <span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">ccall</span> <span class="n" style="color: #333;">unsafe</span> <span class="s" style="color: #d14;">"is_doubleton_homogenous"</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC25" class="line" lang="haskell">  <span class="n" style="color: #333;">c_is_doubleton_homogeneous</span> <span class="o" style="font-weight: 600;">::</span> <span class="n" style="color: #333;">forall</span> <span class="p">(</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;">Type</span><span class="p">)</span><span class="o" style="font-weight: 600;">.</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC26" class="line" lang="haskell">    <span class="kt" style="color: #458; font-weight: 600;">SmallMutableArray</span><span class="o" style="font-weight: 600;">#</span> <span class="kt" style="color: #458; font-weight: 600;">RealWorld</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;">IO</span> <span class="kt" style="color: #458; font-weight: 600;">Word8</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC27" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="28" 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="LC28" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">data</span> <span class="kt" style="color: #458; font-weight: 600;">Box</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Type</span> <span class="kr" style="font-weight: 600;">where</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC29" class="line" lang="haskell">  <span class="kt" style="color: #458; font-weight: 600;">Box</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Any</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TYPE</span> <span class="sc" style="color: #d14;">'U</span><span class="err" style="color: #a61717; background-color: #e3d2d2;">n</span><span class="n" style="color: #333;">liftedRep</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Box</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC30" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;">+<span id="LC31" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- An array of unary integer functions</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="32" 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="LC32" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">data</span> <span class="kt" style="color: #458; font-weight: 600;">SmallMutableArray</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Type</span> <span class="kr" style="font-weight: 600;">where</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="33" 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="LC33" class="line" lang="haskell">  <span class="kt" style="color: #458; font-weight: 600;">SmallMutableArray</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">SmallMutableArray</span><span class="o" style="font-weight: 600;">#</span> <span class="kt" style="color: #458; font-weight: 600;">RealWorld</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Int</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Int</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="34" 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="LC34" class="line" lang="haskell">                    <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">SmallMutableArray</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="35" 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="LC35" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;">+<span id="LC36" class="line" lang="haskell"><span class="n" style="color: #333;">box</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">SmallMutableArray</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Box</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="37" 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="LC37" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# noinline box #-}</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="38" 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="LC38" class="line" lang="haskell"><span class="n" style="color: #333;">box</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">SmallMutableArray</span> <span class="n" style="color: #333;">x</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">Box</span> <span class="p">(</span><span class="n" style="color: #333;">unsafeCoerce</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">x</span><span class="p">)</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC39" class="line" lang="haskell"></span>

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<pre style="margin: 0;">+<span id="LC40" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Allocate a new array of unary integer functions.</span></span>

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<pre style="margin: 0;">+<span id="LC41" class="line" lang="haskell"><span class="n" style="color: #333;">newSmallArray</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Int</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Int</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">IO</span> <span class="kt" style="color: #458; font-weight: 600;">SmallMutableArray</span></span>

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<pre style="margin: 0;">+<span id="LC42" class="line" lang="haskell"><span class="n" style="color: #333;">newSmallArray</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">I</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">len</span><span class="o" style="font-weight: 600;">#</span><span class="p">)</span> <span class="n" style="color: #333;">x</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">IO</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;">s0</span> <span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">newSmallArray</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">len</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">s0</span> <span class="kr" style="font-weight: 600;">of</span></span>

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<pre style="margin: 0;">+<span id="LC43" class="line" lang="haskell">  <span class="p">(</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">s1</span><span class="p">,</span> <span class="n" style="color: #333;">a</span><span class="o" style="font-weight: 600;">#</span> <span class="o" style="font-weight: 600;">#</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">s1</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">SmallMutableArray</span> <span class="n" style="color: #333;">a</span><span class="o" style="font-weight: 600;">#</span> <span class="o" style="font-weight: 600;">#</span><span class="p">)</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC44" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;">+<span id="LC45" class="line" lang="haskell"></span></pre>

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<br>

</li>

<li id="e4ec1949d3cab2e24fda47e4fcfac3cea5c1ce68">

<a href="https://gitlab.haskell.org/ghc/ghc/commit/db78ac6f5d69618ff143ab4b572e7f58a1805687#e4ec1949d3cab2e24fda47e4fcfac3cea5c1ce68"><strong>testsuite/tests/ffi/should_run/T16650d.stdout</strong></a>

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<pre style="margin: 0;">+<span id="LC1" class="line" lang="plaintext">1</span></pre>

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<li id="bbfeedf06c623aa0f3f487c2956212e97568a447">

<a href="https://gitlab.haskell.org/ghc/ghc/commit/db78ac6f5d69618ff143ab4b572e7f58a1805687#bbfeedf06c623aa0f3f487c2956212e97568a447"><strong>testsuite/tests/ffi/should_run/T16650d_c.c</strong></a>

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<pre style="margin: 0;">+<span id="LC1" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#include <stdint.h></span></span>

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<pre style="margin: 0;">+<span id="LC2" class="line" lang="c"></span>

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<pre style="margin: 0;">+<span id="LC3" class="line" lang="c"><span class="c1" style="color: #998; font-style: italic;">// See T16650b_c.c for commentary.</span></span>

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<pre style="margin: 0;">+<span id="LC4" class="line" lang="c"><span class="kt" style="color: #458; font-weight: 600;">uint8_t</span> <span class="nf" style="color: #900; font-weight: 600;">is_doubleton_homogenous</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">void</span> <span class="o" style="font-weight: 600;">**</span><span class="n" style="color: #333;">arr</span><span class="p">)</span> <span class="p">{</span></span>

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<pre style="margin: 0;">+<span id="LC5" class="line" lang="c">  <span class="k" style="font-weight: 600;">return</span> <span class="p">(</span><span class="n" style="color: #333;">arr</span><span class="p">[</span><span class="mi" style="color: #099;">0</span><span class="p">]</span> <span class="o" style="font-weight: 600;">==</span> <span class="n" style="color: #333;">arr</span><span class="p">[</span><span class="mi" style="color: #099;">1</span><span class="p">]);</span></span>

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

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

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<li id="fbea9a6392407b0fa9ede5b9aa0bb2445af9de4b">

<a href="https://gitlab.haskell.org/ghc/ghc/commit/db78ac6f5d69618ff143ab4b572e7f58a1805687#fbea9a6392407b0fa9ede5b9aa0bb2445af9de4b"><strong>testsuite/tests/ffi/should_run/all.T</strong></a>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="191" 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>

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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">@@ -191,6 +191,14 @@ test('T12134', [omit_ways(['ghci'])], compile_and_run, ['T12134_c.c'])</td>

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191

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<td class="diff-line-num new_line" data-linenumber="191" 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">

191

</td>

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

<pre style="margin: 0;"> <span id="LC191" class="line" lang="perl"></span>

</pre>

</td>

</tr>

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

<td class="diff-line-num old_line" data-linenumber="192" 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">

192

</td>

<td class="diff-line-num new_line" data-linenumber="192" 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">

192

</td>

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

<pre style="margin: 0;"> <span id="LC192" class="line" lang="perl"><span class="s" style="color: #d14;">test('</span><span class="nv" style="color: #008080;">T12614</span><span class="s" style="color: #d14;">', [omit_ways(['</span><span class="nv" style="color: #008080;">ghci</span><span class="s" style="color: #d14;">'])], compile_and_run, ['</span><span class="nv" style="color: #008080;">T12614_c</span><span class="o" style="font-weight: 600;">.</span><span class="nv" style="color: #008080;">c</span><span class="s" style="color: #d14;">'])</span></span>

</pre>

</td>

</tr>

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

<td class="diff-line-num old_line" data-linenumber="193" 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">

193

</td>

<td class="diff-line-num new_line" data-linenumber="193" 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">

193

</td>

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

<pre style="margin: 0;"> <span id="LC193" class="line" lang="perl"></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="194" 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="194" 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">

194

</td>

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

<pre style="margin: 0;">+<span id="LC194" class="line" lang="perl"><span class="s" style="color: #d14;">test('</span><span class="nv" style="color: #008080;">T16650a</span><span class="s" style="color: #d14;">', [omit_ways(['</span><span class="nv" style="color: #008080;">ghci</span><span class="s" style="color: #d14;">'])], compile_and_run, ['</span><span class="nv" style="color: #008080;">T16650a_c</span><span class="o" style="font-weight: 600;">.</span><span class="nv" style="color: #008080;">c</span><span class="s" style="color: #d14;">'])</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="194" 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="195" 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">

195

</td>

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

<pre style="margin: 0;">+<span id="LC195" class="line" lang="perl"></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="194" 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="196" 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">

196

</td>

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

<pre style="margin: 0;">+<span id="LC196" class="line" lang="perl"><span class="s" style="color: #d14;">test('</span><span class="nv" style="color: #008080;">T16650b</span><span class="s" style="color: #d14;">', [omit_ways(['</span><span class="nv" style="color: #008080;">ghci</span><span class="s" style="color: #d14;">'])], compile_and_run, ['</span><span class="nv" style="color: #008080;">T16650b_c</span><span class="o" style="font-weight: 600;">.</span><span class="nv" style="color: #008080;">c</span><span class="s" style="color: #d14;">'])</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="194" 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="197" 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">

197

</td>

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

<pre style="margin: 0;">+<span id="LC197" class="line" lang="perl"></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="194" 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="198" 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">

198

</td>

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

<pre style="margin: 0;">+<span id="LC198" class="line" lang="perl"><span class="s" style="color: #d14;">test('</span><span class="nv" style="color: #008080;">T16650c</span><span class="s" style="color: #d14;">', [omit_ways(['</span><span class="nv" style="color: #008080;">ghci</span><span class="s" style="color: #d14;">'])], compile_and_run, ['</span><span class="nv" style="color: #008080;">T16650c_c</span><span class="o" style="font-weight: 600;">.</span><span class="nv" style="color: #008080;">c</span><span class="s" style="color: #d14;">'])</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="194" 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="199" 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">

199

</td>

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

<pre style="margin: 0;">+<span id="LC199" class="line" lang="perl"></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="194" 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="200" 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">

200

</td>

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

<pre style="margin: 0;">+<span id="LC200" class="line" lang="perl"><span class="s" style="color: #d14;">test('</span><span class="nv" style="color: #008080;">T16650d</span><span class="s" style="color: #d14;">', [omit_ways(['</span><span class="nv" style="color: #008080;">ghci</span><span class="s" style="color: #d14;">'])], compile_and_run, ['</span><span class="nv" style="color: #008080;">T16650d_c</span><span class="o" style="font-weight: 600;">.</span><span class="nv" style="color: #008080;">c</span><span class="s" style="color: #d14;">'])</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="194" 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="201" 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">

201

</td>

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

<pre style="margin: 0;">+<span id="LC201" class="line" lang="perl"></span>

</pre>

</td>

</tr>

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

<td class="diff-line-num old_line" data-linenumber="194" 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">

194

</td>

<td class="diff-line-num new_line" data-linenumber="202" 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">

202

</td>

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

<pre style="margin: 0;"> <span id="LC202" class="line" lang="perl"><span class="s" style="color: #d14;">test('</span><span class="nv" style="color: #008080;">PrimFFIInt8</span><span class="s" style="color: #d14;">', [omit_ways(['</span><span class="nv" style="color: #008080;">ghci</span><span class="s" style="color: #d14;">'])], compile_and_run, ['</span><span class="nv" style="color: #008080;">PrimFFIInt8_c</span><span class="o" style="font-weight: 600;">.</span><span class="nv" style="color: #008080;">c</span><span class="s" style="color: #d14;">'])</span></span>

</pre>

</td>

</tr>

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

<td class="diff-line-num old_line" data-linenumber="195" 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">

195

</td>

<td class="diff-line-num new_line" data-linenumber="203" 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">

203

</td>

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

<pre style="margin: 0;"> <span id="LC203" class="line" lang="perl"></span>

</pre>

</td>

</tr>

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

<td class="diff-line-num old_line" data-linenumber="196" 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">

196

</td>

<td class="diff-line-num new_line" data-linenumber="204" 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">

204

</td>

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

<pre style="margin: 0;"> <span id="LC204" class="line" lang="perl"><span class="s" style="color: #d14;">test('</span><span class="nv" style="color: #008080;">PrimFFIWord8</span><span class="s" style="color: #d14;">', [omit_ways(['</span><span class="nv" style="color: #008080;">ghci</span><span class="s" style="color: #d14;">'])], compile_and_run, ['</span><span class="nv" style="color: #008080;">PrimFFIWord8_c</span><span class="o" style="font-weight: 600;">.</span><span class="nv" style="color: #008080;">c</span><span class="s" style="color: #d14;">'])</span></span>

</pre>

</td>

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