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GitLab

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<h3>

 Marge Bot pushed to branch wip/marge_bot_batch_merge_job

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

</h3>

<h4>

Commits:

</h4>

<ul>

<li>

<strong><a href="https://gitlab.haskell.org/ghc/ghc/commit/1d43d4a3e45d86261fa63591e99749cb7d3f68ed">1d43d4a3</a></strong>

<div>

<span>by Nathan Collins</span>

<i>at 2019-06-01T03:55:49Z</i>

</div>

<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Improve ThreadId Show instance

By making it include parens when a derived instance would. For example, this changes the (hypothetical) code `show (Just (ThreadId 3))` to produce `"Just (ThreadId 3)"` instead of the current `"Just ThreadId 3"`.

</pre>

</li>

<li>

<strong><a href="https://gitlab.haskell.org/ghc/ghc/commit/45f88494293bea20cc3aca025ee6fe84087987ce">45f88494</a></strong>

<div>

<span>by Ryan Scott</span>

<i>at 2019-06-01T03:56:27Z</i>

</div>

<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Reject nested foralls in foreign imports (#16702)

This replaces a panic observed in #16702 with a simple error message

stating that nested `forall`s simply aren't allowed in the type

signature of a `foreign import` (at least, not at present).

Fixes #16702.

</pre>

</li>

<li>

<strong><a href="https://gitlab.haskell.org/ghc/ghc/commit/76e5889017ee4ac688901d37f2fa684e807769b6">76e58890</a></strong>

<div>

<span>by Ryan Scott</span>

<i>at 2019-06-01T03:57:05Z</i>

</div>

<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Fix space leaks in dynLoadObjs (#16708)

When running the test suite on a GHC built with the `quick` build

flavour, `-fghci-leak-check` noticed some space leaks. Careful

investigation led to `Linker.dynLoadObjs` being the culprit.

Pattern-matching on `PeristentLinkerState` and a dash of `$!` were

sufficient to fix the issue. (ht to mpickering for his suggestions,

which were crucial to discovering a fix)

Fixes #16708.

</pre>

</li>

<li>

<strong><a href="https://gitlab.haskell.org/ghc/ghc/commit/d9d0e51435b7cedd687cb2e3ca7c49923b754a20">d9d0e514</a></strong>

<div>

<span>by Ömer Sinan Ağacan</span>

<i>at 2019-06-01T09:58:48Z</i>

</div>

<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Fix rewriting invalid shifts to errors

Fixes #16449.

5341edf3 removed a code in rewrite rules for bit shifts, which broke the

"silly shift guard", causing generating invalid bit shifts or heap

overflow in compile time while trying to evaluate those invalid bit

shifts.

The "guard" is explained in Note [Guarding against silly shifts] in

PrelRules.hs.

More specifically, this was the breaking change:

    --- a/compiler/prelude/PrelRules.hs

    +++ b/compiler/prelude/PrelRules.hs

    @@ -474,12 +474,11 @@ shiftRule shift_op

            ; case e1 of

                _ | shift_len == 0

                  -> return e1

    -             | shift_len < 0 || wordSizeInBits dflags < shift_len

    -             -> return (mkRuntimeErrorApp rUNTIME_ERROR_ID wordPrimTy

    -                                        ("Bad shift length" ++ show shift_len))

This patch reverts this change.

Two new tests added:

- T16449_1: The original reproducer in #16449. This was previously

  casing a heap overflow in compile time when CmmOpt tries to evaluate

  the large (invalid) bit shift in compile time, using `Integer` as the

  result type. Now it builds as expected. We now generate an error for

  the shift as expected.

- T16449_2: Tests code generator for large (invalid) bit shifts.

</pre>

</li>

<li>

<strong><a href="https://gitlab.haskell.org/ghc/ghc/commit/26736f3c71df568f5fb71e2fb25d2534efb94759">26736f3c</a></strong>

<div>

<span>by Ömer Sinan Ağacan</span>

<i>at 2019-06-01T09:58:50Z</i>

</div>

<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">rts: Remove unused decls from CNF.h

</pre>

</li>

</ul>

<h4>14 changed files:</h4>

<ul>

<li class="file-stats">

<a href="#47f4bea1d308dee249030e6063d92071b5aac240">

compiler/ghci/Linker.hs

</a>

</li>

<li class="file-stats">

<a href="#844514241b3e1a009f66bf594cbb57fef61482fb">

compiler/prelude/PrelRules.hs

</a>

</li>

<li class="file-stats">

<a href="#e5d0de6b086bbc65938b566dbebcc274be64dab8">

compiler/typecheck/TcForeign.hs

</a>

</li>

<li class="file-stats">

<a href="#2b8f04584fafff0b8f78c8867b06665527f31762">

docs/users_guide/ffi-chap.rst

</a>

</li>

<li class="file-stats">

<a href="#484e50173b324b5842d294580ec9ed8a7b0d5d38">

libraries/base/GHC/Conc/Sync.hs

</a>

</li>

<li class="file-stats">

<a href="#4759adf3cad00f03c51fce00cc09f617b36d46d0">

rts/sm/CNF.h

</a>

</li>

<li class="file-stats">

<a href="#ae1ed6d198d50aee849f1e070a5a69aa07a92f2e">

<span class="new-file">

+

testsuite/tests/codeGen/should_compile/T16449_1.hs

</span>

</a>

</li>

<li class="file-stats">

<a href="#6b1c188363067aa37c05e3a281dad45535511b14">

testsuite/tests/codeGen/should_compile/all.T

</a>

</li>

<li class="file-stats">

<a href="#4d59cf0c96c12a05bf8356f74fc6e243511066d1">

<span class="new-file">

+

testsuite/tests/codeGen/should_run/T16449_2.hs

</span>

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<li class="file-stats">

<a href="#fc71411b980ba2e43ce1a3ea8b896057e74537a6">

<span class="new-file">

+

testsuite/tests/codeGen/should_run/T16449_2.stderr

</span>

</a>

</li>

<li class="file-stats">

<a href="#b9bba9766faf563ab195fb1402f14fa78ad5c66f">

testsuite/tests/codeGen/should_run/all.T

</a>

</li>

<li class="file-stats">

<a href="#8ae3403efd5151d893f104397ad6327ed8e69e13">

<span class="new-file">

+

testsuite/tests/ffi/should_fail/T16702.hs

</span>

</a>

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<li class="file-stats">

<a href="#8b6a43d3ade5c92512bc0e2778dcf489b246d024">

<span class="new-file">

+

testsuite/tests/ffi/should_fail/T16702.stderr

</span>

</a>

</li>

<li class="file-stats">

<a href="#959604952ad853722a516e17c23d0cf7a5aa7815">

testsuite/tests/ffi/should_fail/all.T

</a>

</li>

</ul>

<h4>Changes:</h4>

<li id="47f4bea1d308dee249030e6063d92071b5aac240">

<a href="https://gitlab.haskell.org/ghc/ghc/compare/3c8d1989a19faa65287c976fecfdbde96995d367...26736f3c71df568f5fb71e2fb25d2534efb94759#47f4bea1d308dee249030e6063d92071b5aac240"><strong>compiler/ghci/Linker.hs</strong></a>

<hr>

<table class="code white" style="font-family: monospace; font-size: 90%;" bgcolor="#fff" width="100%" cellpadding="0" cellspacing="0">

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

<td class="diff-line-num unfold js-unfold old_line" data-linenumber="115" 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="115" 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">@@ -115,7 +115,7 @@ readPLS dl =</td>

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

<td class="diff-line-num old_line" data-linenumber="115" 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">

115

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<td class="diff-line-num new_line" data-linenumber="115" 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">

115

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

<pre style="margin: 0;"> <span id="LC115" class="line" lang="haskell"></span>

</pre>

</td>

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

<td class="diff-line-num old_line" data-linenumber="116" 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">

116

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<td class="diff-line-num new_line" data-linenumber="116" 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">

116

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

<pre style="margin: 0;"> <span id="LC116" class="line" lang="haskell"><span class="n" style="color: #333;">modifyMbPLS_</span></span>

</pre>

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

<td class="diff-line-num old_line" data-linenumber="117" 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">

117

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<td class="diff-line-num new_line" data-linenumber="117" 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">

117

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

<pre style="margin: 0;"> <span id="LC117" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">DynLinker</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="kt" style="color: #458; font-weight: 600;">PersistentLinkerState</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">IO</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="kt" style="color: #458; font-weight: 600;">PersistentLinkerState</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="nb" style="color: #0086b3;">()</span></span>

</pre>

</td>

</tr>

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

<td class="diff-line-num old old_line" data-linenumber="118" 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">

118

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<td class="diff-line-num new_line old" data-linenumber="118" 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="LC118" class="line" lang="haskell"><span class="n" style="color: #333;">modifyMbPLS_</span> <span class="n" style="color: #333;">dl</span> <span class="n" style="color: #333;">f</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">modifyMVar_</span> <span class="p">(</span><span class="n" style="color: #333;">dl_mpls</span> <span class="n" style="color: #333;">dl</span><span class="p">)</span> <span class="n" style="color: #333;">f</span><span class="idiff left right"> </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="119" 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="118" 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="LC118" class="line" lang="haskell"><span class="n" style="color: #333;">modifyMbPLS_</span> <span class="n" style="color: #333;">dl</span> <span class="n" style="color: #333;">f</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">modifyMVar_</span> <span class="p">(</span><span class="n" style="color: #333;">dl_mpls</span> <span class="n" style="color: #333;">dl</span><span class="p">)</span> <span class="n" style="color: #333;">f</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="119" 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="119" 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="LC119" class="line" lang="haskell"></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="120" 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">

120

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<td class="diff-line-num new_line" data-linenumber="120" 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="LC120" class="line" lang="haskell"><span class="n" style="color: #333;">emptyPLS</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;">PersistentLinkerState</span></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="121" 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">

121

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<td class="diff-line-num new_line" data-linenumber="121" 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="LC121" class="line" lang="haskell"><span class="n" style="color: #333;">emptyPLS</span> <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">PersistentLinkerState</span> <span class="p">{</span></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="881" 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="881" 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">@@ -881,8 +881,8 @@ dynLinkObjs hsc_env pls objs = do</td>

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<td class="diff-line-num old_line" data-linenumber="881" 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">

881

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<pre style="margin: 0;"> <span id="LC881" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;"> <span id="LC882" class="line" lang="haskell"><span class="n" style="color: #333;">dynLoadObjs</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">HscEnv</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">PersistentLinkerState</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">FilePath</span><span class="p">]</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC883" class="line" lang="haskell">            <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;">PersistentLinkerState</span></span>

</pre>

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<pre style="margin: 0;">-<span id="LC884" class="line" lang="haskell"><span class="n" style="color: #333;">dynLoadObjs</span> <span class="kr" style="font-weight: 600;">_</span>       <span class="n" style="color: #333;">pls</span> <span class="kt" style="color: #458; font-weight: 600;">[]</span>   <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">return</span> <span class="n" style="color: #333;">pls</span></span>

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<pre style="margin: 0;">-<span id="LC885" class="line" lang="haskell"><span class="n" style="color: #333;">dynLoadObjs</span> <span class="n" style="color: #333;">hsc_env</span> <span class="n" style="color: #333;">pls</span> <span class="n" style="color: #333;">objs</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span></span>

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<pre style="margin: 0;">+<span id="LC884" class="line" lang="haskell"><span class="n" style="color: #333;">dynLoadObjs</span> <span class="kr" style="font-weight: 600;">_</span>       <span class="n" style="color: #333;">pls</span> <span class="idiff left right">                          </span><span class="kt" style="color: #458; font-weight: 600;">[]</span>   <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">return</span> <span class="n" style="color: #333;">pls</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC885" class="line" lang="haskell"><span class="n" style="color: #333;">dynLoadObjs</span> <span class="n" style="color: #333;">hsc_env</span> <span class="n" style="color: #333;">pls</span><span class="o" style="font-weight: 600;"><span class="idiff left">@</span></span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">PersistentLinkerState</span></span><span class="p"><span class="idiff">{</span></span><span class="o" style="font-weight: 600;"><span class="idiff">..</span></span><span class="p"><span class="idiff right">}</span></span> <span class="n" style="color: #333;">objs</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span></span>

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<pre style="margin: 0;"> <span id="LC886" class="line" lang="haskell">    <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">dflags</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">hsc_dflags</span> <span class="n" style="color: #333;">hsc_env</span></span>

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<pre style="margin: 0;"> <span id="LC887" class="line" lang="haskell">    <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">platform</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">targetPlatform</span> <span class="n" style="color: #333;">dflags</span></span>

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<pre style="margin: 0;"> <span id="LC888" class="line" lang="haskell">    <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">minus_ls</span> <span class="o" style="font-weight: 600;">=</span> <span class="p">[</span> <span class="n" style="color: #333;">lib</span> <span class="o" style="font-weight: 600;">|</span> <span class="kt" style="color: #458; font-weight: 600;">Option</span> <span class="p">(</span><span class="sc" style="color: #d14;">'-'</span><span class="o" style="font-weight: 600;">:</span><span class="sc" style="color: #d14;">'l'</span><span class="o" style="font-weight: 600;">:</span><span class="n" style="color: #333;">lib</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">ldInputs</span> <span class="n" style="color: #333;">dflags</span> <span class="p">]</span></span>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="899" 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="899" 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">@@ -899,13 +899,13 @@ dynLoadObjs hsc_env pls objs = do</td>

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<pre style="margin: 0;"> <span id="LC899" class="line" lang="haskell">                      <span class="c1" style="color: #998; font-style: italic;">-- library.</span></span>

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<pre style="margin: 0;"> <span id="LC900" class="line" lang="haskell">                      <span class="n" style="color: #333;">ldInputs</span> <span class="o" style="font-weight: 600;">=</span></span>

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<pre style="margin: 0;"> <span id="LC901" class="line" lang="haskell">                           <span class="n" style="color: #333;">concatMap</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">l</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span> <span class="kt" style="color: #458; font-weight: 600;">Option</span> <span class="p">(</span><span class="s" style="color: #d14;">"-l"</span> <span class="o" style="font-weight: 600;">++</span> <span class="n" style="color: #333;">l</span><span class="p">)</span> <span class="p">])</span></span>

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<pre style="margin: 0;">-<span id="LC902" class="line" lang="haskell">                                     <span class="p">(</span><span class="n" style="color: #333;">nub</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">snd</span> <span class="o" style="font-weight: 600;"><$></span> <span class="n" style="color: #333;">temp_sos</span><span class="idiff left"> </span><span class="n" style="color: #333;"><span class="idiff right">pls</span></span><span class="p">)</span></span>

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<pre style="margin: 0;">+<span id="LC902" class="line" lang="haskell">                                     <span class="p">(</span><span class="n" style="color: #333;">nub</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">snd</span> <span class="o" style="font-weight: 600;"><$></span> <span class="n" style="color: #333;">temp_sos</span><span class="p">)</span></span>

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<pre style="margin: 0;"> <span id="LC903" class="line" lang="haskell">                        <span class="o" style="font-weight: 600;">++</span> <span class="n" style="color: #333;">concatMap</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">lp</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span> <span class="kt" style="color: #458; font-weight: 600;">Option</span> <span class="p">(</span><span class="s" style="color: #d14;">"-L"</span> <span class="o" style="font-weight: 600;">++</span> <span class="n" style="color: #333;">lp</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="904" 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">

904

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<td class="diff-line-num new_line" data-linenumber="904" 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">

904

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<pre style="margin: 0;"> <span id="LC904" class="line" lang="haskell">                                                    <span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Option</span> <span class="s" style="color: #d14;">"-Xlinker"</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="905" 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">

905

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<td class="diff-line-num new_line" data-linenumber="905" 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">

905

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<pre style="margin: 0;"> <span id="LC905" class="line" lang="haskell">                                                    <span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Option</span> <span class="s" style="color: #d14;">"-rpath"</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="906" 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">

906

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<td class="diff-line-num new_line" data-linenumber="906" 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">

906

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<pre style="margin: 0;"> <span id="LC906" class="line" lang="haskell">                                                    <span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Option</span> <span class="s" style="color: #d14;">"-Xlinker"</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="907" 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">

907

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<td class="diff-line-num new_line" data-linenumber="907" 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">

907

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<pre style="margin: 0;"> <span id="LC907" class="line" lang="haskell">                                                    <span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Option</span> <span class="n" style="color: #333;">lp</span> <span class="p">])</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="908" 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">

908

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<td class="diff-line-num new_line old" data-linenumber="908" 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="LC908" class="line" lang="haskell">                                     <span class="p">(</span><span class="n" style="color: #333;">nub</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">fst</span> <span class="o" style="font-weight: 600;"><$></span> <span class="n" style="color: #333;">temp_sos</span><span class="idiff left"> </span><span class="n" style="color: #333;"><span class="idiff right">pls</span></span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="909" 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="908" 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">

908

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<pre style="margin: 0;">+<span id="LC908" class="line" lang="haskell">                                     <span class="p">(</span><span class="n" style="color: #333;">nub</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">fst</span> <span class="o" style="font-weight: 600;"><$></span> <span class="n" style="color: #333;">temp_sos</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="909" 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">

909

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<td class="diff-line-num new_line" data-linenumber="909" 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">

909

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<pre style="margin: 0;"> <span id="LC909" class="line" lang="haskell">                        <span class="o" style="font-weight: 600;">++</span> <span class="n" style="color: #333;">concatMap</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="910" 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">

910

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<td class="diff-line-num new_line" data-linenumber="910" 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">

910

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<pre style="margin: 0;"> <span id="LC910" class="line" lang="haskell">                             <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">lp</span> <span class="o" style="font-weight: 600;">-></span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="911" 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">

911

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<td class="diff-line-num new_line" data-linenumber="911" 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">

911

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<pre style="margin: 0;"> <span id="LC911" class="line" lang="haskell">                                 <span class="p">[</span> <span class="kt" style="color: #458; font-weight: 600;">Option</span> <span class="p">(</span><span class="s" style="color: #d14;">"-L"</span> <span class="o" style="font-weight: 600;">++</span> <span class="n" style="color: #333;">lp</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="933" 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="933" 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">@@ -933,13 +933,13 @@ dynLoadObjs hsc_env pls objs = do</td>

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<td class="diff-line-num old_line" data-linenumber="933" 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">

933

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<td class="diff-line-num new_line" data-linenumber="933" 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">

933

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<pre style="margin: 0;"> <span id="LC933" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">-- link all "loaded packages" so symbols in those can be resolved</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="934" 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">

934

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<td class="diff-line-num new_line" data-linenumber="934" 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">

934

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<pre style="margin: 0;"> <span id="LC934" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">-- Note: We are loading packages with local scope, so to see the</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="935" 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">

935

</td>

<td class="diff-line-num new_line" data-linenumber="935" 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">

935

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<pre style="margin: 0;"> <span id="LC935" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">-- symbols in this link we must link all loaded packages again.</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="936" 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">

936

</td>

<td class="diff-line-num new_line old" data-linenumber="936" 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="LC936" class="line" lang="haskell">    <span class="n" style="color: #333;">linkDynLib</span> <span class="n" style="color: #333;">dflags2</span> <span class="n" style="color: #333;">objs</span> <span class="p"><span class="idiff left">(</span></span><span class="n" style="color: #333;"><span class="idiff">pkgs_loaded</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">pls</span></span><span class="p"><span class="idiff right">)</span></span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="937" 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="936" 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">

936

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<pre style="margin: 0;">+<span id="LC936" class="line" lang="haskell">    <span class="n" style="color: #333;">linkDynLib</span> <span class="n" style="color: #333;">dflags2</span> <span class="n" style="color: #333;">objs</span> <span class="n" style="color: #333;"><span class="idiff left right">pkgs_loaded</span></span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="937" 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">

937

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<td class="diff-line-num new_line" data-linenumber="937" 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">

937

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<pre style="margin: 0;"> <span id="LC937" class="line" lang="haskell"></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="938" 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">

938

</td>

<td class="diff-line-num new_line" data-linenumber="938" 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">

938

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<pre style="margin: 0;"> <span id="LC938" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">-- if we got this far, extend the lifetime of the library file</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="939" 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">

939

</td>

<td class="diff-line-num new_line" data-linenumber="939" 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">

939

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<pre style="margin: 0;"> <span id="LC939" class="line" lang="haskell">    <span class="n" style="color: #333;">changeTempFilesLifetime</span> <span class="n" style="color: #333;">dflags</span> <span class="kt" style="color: #458; font-weight: 600;">TFL_GhcSession</span> <span class="p">[</span><span class="n" style="color: #333;">soFile</span><span class="p">]</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC940" class="line" lang="haskell">    <span class="n" style="color: #333;">m</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">loadDLL</span> <span class="n" style="color: #333;">hsc_env</span> <span class="n" style="color: #333;">soFile</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC941" class="line" lang="haskell">    <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">m</span> <span class="kr" style="font-weight: 600;">of</span></span>

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<pre style="margin: 0;">-<span id="LC942" class="line" lang="haskell">        <span class="kt" style="color: #458; font-weight: 600;">Nothing</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">return</span> <span class="n" style="color: #333;"><span class="idiff left">pls</span></span><span class="idiff"> </span><span class="p"><span class="idiff">{</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">temp_sos</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><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">libPath</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">libName</span></span><span class="p"><span class="idiff">)</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">:</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">temp_sos</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">pl</span>s</span> <span class="p">}</span></span>

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<pre style="margin: 0;">+<span id="LC942" class="line" lang="haskell">        <span class="kt" style="color: #458; font-weight: 600;">Nothing</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 class="idiff left">$!</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">pls</span></span><span class="idiff"> </span><span class="p"><span class="idiff">{</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">temp_sos</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><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">libPath</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">libName</span></span><span class="p"><span class="idiff">)</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">:</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">temp_so</span>s</span> <span class="p">}</span></span>

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<pre style="margin: 0;"> <span id="LC943" class="line" lang="haskell">        <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="n" style="color: #333;">err</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">panic</span> <span class="p">(</span><span class="s" style="color: #d14;">"Loading temp shared object failed: "</span> <span class="o" style="font-weight: 600;">++</span> <span class="n" style="color: #333;">err</span><span class="p">)</span></span>

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<pre style="margin: 0;"> <span id="LC944" class="line" lang="haskell"></span>

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<pre style="margin: 0;"> <span id="LC945" class="line" lang="haskell"><span class="n" style="color: #333;">rmDupLinkables</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">Linkable</span><span class="p">]</span>    <span class="c1" style="color: #998; font-style: italic;">-- Already loaded</span></span>

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</li>

<li id="844514241b3e1a009f66bf594cbb57fef61482fb">

<a href="https://gitlab.haskell.org/ghc/ghc/compare/3c8d1989a19faa65287c976fecfdbde96995d367...26736f3c71df568f5fb71e2fb25d2534efb94759#844514241b3e1a009f66bf594cbb57fef61482fb"><strong>compiler/prelude/PrelRules.hs</strong></a>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="467" 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">@@ -467,13 +467,16 @@ shiftRule :: (DynFlags -> Integer -> Int -> Integer) -> RuleM CoreExpr</td>

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<pre style="margin: 0;"> <span id="LC467" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Used for shift primops</span></span>

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<pre style="margin: 0;"> <span id="LC468" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--    ISllOp, ISraOp, ISrlOp :: Word# -> Int# -> Word#</span></span>

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<pre style="margin: 0;"> <span id="LC469" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--    SllOp, SrlOp           :: Word# -> Int# -> Word#</span></span>

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<pre style="margin: 0;">-<span id="LC470" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See Note [Guarding against silly shifts]</span></span>

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<pre style="margin: 0;"> <span id="LC470" class="line" lang="haskell"><span class="n" style="color: #333;">shiftRule</span> <span class="n" style="color: #333;">shift_op</span></span>

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<pre style="margin: 0;"> <span id="LC471" 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="LC472" class="line" lang="haskell">       <span class="p">;</span> <span class="p">[</span><span class="n" style="color: #333;">e1</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Lit</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">LitNumber</span> <span class="kt" style="color: #458; font-weight: 600;">LitNumInt</span> <span class="n" style="color: #333;">shift_len</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;">getArgs</span></span>

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<pre style="margin: 0;"> <span id="LC473" class="line" lang="haskell">       <span class="p">;</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">e1</span> <span class="kr" style="font-weight: 600;">of</span></span>

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<pre style="margin: 0;"> <span id="LC474" class="line" lang="haskell">           <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">shift_len</span> <span class="o" style="font-weight: 600;">==</span> <span class="mi" style="color: #099;">0</span></span>

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<pre style="margin: 0;"> <span id="LC475" class="line" lang="haskell">             <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">return</span> <span class="n" style="color: #333;">e1</span></span>

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<pre style="margin: 0;">+<span id="LC476" class="line" lang="haskell">             <span class="c1" style="color: #998; font-style: italic;">-- See Note [Guarding against silly shifts]</span></span>

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<pre style="margin: 0;">+<span id="LC477" class="line" lang="haskell">             <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">shift_len</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="n" style="color: #333;">shift_len</span> <span class="o" style="font-weight: 600;">></span> <span class="n" style="color: #333;">wordSizeInBits</span> <span class="n" style="color: #333;">dflags</span></span>

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<pre style="margin: 0;">+<span id="LC478" class="line" lang="haskell">             <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;">mkRuntimeErrorApp</span> <span class="n" style="color: #333;">rUNTIME_ERROR_ID</span> <span class="n" style="color: #333;">wordPrimTy</span></span>

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<pre style="margin: 0;">+<span id="LC479" class="line" lang="haskell">                           <span class="p">(</span><span class="s" style="color: #d14;">"Bad shift length "</span> <span class="o" style="font-weight: 600;">++</span> <span class="n" style="color: #333;">show</span> <span class="n" style="color: #333;">shift_len</span><span class="p">)</span></span>

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<pre style="margin: 0;"> <span id="LC480" class="line" lang="haskell"></span>

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<pre style="margin: 0;"> <span id="LC481" class="line" lang="haskell">           <span class="c1" style="color: #998; font-style: italic;">-- Do the shift at type Integer, but shift length is Int</span></span>

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<pre style="margin: 0;"> <span id="LC482" class="line" lang="haskell">           <span class="kt" style="color: #458; font-weight: 600;">Lit</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">LitNumber</span> <span class="n" style="color: #333;">nt</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">t</span><span class="p">)</span></span>

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<br>

</li>

<li id="e5d0de6b086bbc65938b566dbebcc274be64dab8">

<a href="https://gitlab.haskell.org/ghc/ghc/compare/3c8d1989a19faa65287c976fecfdbde96995d367...26736f3c71df568f5fb71e2fb25d2534efb94759#e5d0de6b086bbc65938b566dbebcc274be64dab8"><strong>compiler/typecheck/TcForeign.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">@@ -64,7 +64,6 @@ import Hooks</td>

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<pre style="margin: 0;"> <span id="LC64" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="k" style="font-weight: 600;">qualified</span> <span class="nn" style="color: #555;">GHC.LanguageExtensions</span> <span class="k" style="font-weight: 600;">as</span> <span class="n" style="color: #333;">LangExt</span></span>

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<pre style="margin: 0;"> <span id="LC65" class="line" lang="haskell"></span>

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<pre style="margin: 0;"> <span id="LC66" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Control.Monad</span></span>

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<pre style="margin: 0;">-<span id="LC67" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Data.Maybe</span></span>

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<pre style="margin: 0;"> <span id="LC67" class="line" lang="haskell"></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;">-- Defines a binding</span></span>

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<pre style="margin: 0;"> <span id="LC69" class="line" lang="haskell"><span class="n" style="color: #333;">isForeignImport</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">LForeignDecl</span> <span class="n" style="color: #333;">name</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span></span>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="251" 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="250" 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">@@ -251,8 +250,7 @@ tcFImport (L dloc fo@(ForeignImport { fd_name = L nloc nm, fd_sig_ty = hs_ty</td>

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<pre style="margin: 0;"> <span id="LC250" class="line" lang="haskell">       <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span></span>

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<pre style="margin: 0;"> <span id="LC251" class="line" lang="haskell">           <span class="c1" style="color: #998; font-style: italic;">-- Drop the foralls before inspecting the</span></span>

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<pre style="margin: 0;"> <span id="LC252" class="line" lang="haskell">           <span class="c1" style="color: #998; font-style: italic;">-- structure of the foreign type.</span></span>

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<pre style="margin: 0;">-<span id="LC254" class="line" lang="haskell">             <span class="p">(</span><span class="n" style="color: #333;">bndrs</span><span class="p">,</span> <span class="n" style="color: #333;">res_ty</span><span class="p">)</span>   <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tcSplitPiTys</span> <span class="n" style="color: #333;">norm_sig_ty</span></span>

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<pre style="margin: 0;">-<span id="LC255" class="line" lang="haskell">             <span class="n" style="color: #333;">arg_tys</span>           <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mapMaybe</span> <span class="n" style="color: #333;">binderRelevantType_maybe</span> <span class="n" style="color: #333;">bndrs</span></span>

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<pre style="margin: 0;">+<span id="LC253" class="line" lang="haskell">             <span class="p">(</span><span class="n" style="color: #333;">arg_tys</span><span class="p">,</span> <span class="n" style="color: #333;">res_ty</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tcSplitFunTys</span> <span class="p">(</span><span class="n" style="color: #333;">dropForAlls</span> <span class="n" style="color: #333;">norm_sig_ty</span><span class="p">)</span></span>

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<pre style="margin: 0;"> <span id="LC254" class="line" lang="haskell">             <span class="n" style="color: #333;">id</span>                <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mkLocalId</span> <span class="n" style="color: #333;">nm</span> <span class="n" style="color: #333;">sig_ty</span></span>

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<pre style="margin: 0;"> <span id="LC255" class="line" lang="haskell">                 <span class="c1" style="color: #998; font-style: italic;">-- Use a LocalId to obey the invariant that locally-defined</span></span>

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<pre style="margin: 0;"> <span id="LC256" class="line" lang="haskell">                 <span class="c1" style="color: #998; font-style: italic;">-- things are LocalIds.  However, it does not need zonking,</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">@@ -424,10 +422,9 @@ tcCheckFEType sig_ty (CExport (L l (CExportStatic esrc str cconv)) src) = do</td>

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<pre style="margin: 0;"> <span id="LC422" class="line" lang="haskell">    <span class="n" style="color: #333;">checkForeignRes</span> <span class="n" style="color: #333;">nonIOok</span> <span class="n" style="color: #333;">noCheckSafe</span> <span class="n" style="color: #333;">isFFIExportResultTy</span> <span class="n" style="color: #333;">res_ty</span></span>

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<pre style="margin: 0;"> <span id="LC423" class="line" lang="haskell">    <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">CExport</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="n" style="color: #333;">l</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">CExportStatic</span> <span class="n" style="color: #333;">esrc</span> <span class="n" style="color: #333;">str</span> <span class="n" style="color: #333;">cconv'</span><span class="p">))</span> <span class="n" style="color: #333;">src</span><span class="p">)</span></span>

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<pre style="margin: 0;"> <span id="LC424" class="line" lang="haskell">  <span class="kr" style="font-weight: 600;">where</span></span>

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<pre style="margin: 0;">-<span id="LC427" class="line" lang="haskell">      <span class="c1" style="color: #998; font-style: italic;">-- Drop the foralls before inspecting<span class="idiff left right"> n</span></span></span>

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<pre style="margin: 0;">+<span id="LC425" class="line" lang="haskell">      <span class="c1" style="color: #998; font-style: italic;">-- Drop the foralls before inspecting</span></span>

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<pre style="margin: 0;"> <span id="LC426" class="line" lang="haskell">      <span class="c1" style="color: #998; font-style: italic;">-- the structure of the foreign type.</span></span>

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<pre style="margin: 0;">-<span id="LC429" class="line" lang="haskell">    <span class="p">(</span><span class="n" style="color: #333;">bndrs</span><span class="p">,</span> <span class="n" style="color: #333;">res_ty</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tcSplitPiTys</span> <span class="n" style="color: #333;">sig_ty</span></span>

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<pre style="margin: 0;">-<span id="LC430" class="line" lang="haskell">    <span class="n" style="color: #333;">arg_tys</span>         <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mapMaybe</span> <span class="n" style="color: #333;">binderRelevantType_maybe</span> <span class="n" style="color: #333;">bndrs</span></span>

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<pre style="margin: 0;">+<span id="LC427" class="line" lang="haskell">    <span class="p">(</span><span class="n" style="color: #333;">arg_tys</span><span class="p">,</span> <span class="n" style="color: #333;">res_ty</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tcSplitFunTys</span> <span class="p">(</span><span class="n" style="color: #333;">dropForAlls</span> <span class="n" style="color: #333;">sig_ty</span><span class="p">)</span></span>

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<pre style="margin: 0;"> <span id="LC428" class="line" lang="haskell"></span>

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<pre style="margin: 0;"> <span id="LC429" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">{-</span></span>

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<pre style="margin: 0;"> <span id="LC430" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">************************************************************************</span></span>

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<td class="diff-line-num unfold js-unfold new_line" data-linenumber="455" 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">@@ -458,6 +455,11 @@ checkForeignRes non_io_result_ok check_safe pred_res_ty ty</td>

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<pre style="margin: 0;"> <span id="LC455" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span>     <span class="c1" style="color: #998; font-style: italic;">-- Got an IO result type, that's always fine!</span></span>

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<pre style="margin: 0;"> <span id="LC456" class="line" lang="haskell">     <span class="n" style="color: #333;">check</span> <span class="p">(</span><span class="n" style="color: #333;">pred_res_ty</span> <span class="n" style="color: #333;">res_ty</span><span class="p">)</span> <span class="p">(</span><span class="n" style="color: #333;">illegalForeignTyErr</span> <span class="n" style="color: #333;">result</span><span class="p">)</span></span>

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<pre style="margin: 0;"> <span id="LC457" class="line" lang="haskell"></span>

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<pre style="margin: 0;">+<span id="LC458" class="line" lang="haskell">  <span class="c1" style="color: #998; font-style: italic;">-- We disallow nested foralls in foreign types</span></span>

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<pre style="margin: 0;">+<span id="LC459" class="line" lang="haskell">  <span class="c1" style="color: #998; font-style: italic;">-- (at least, for the time being). See #16702.</span></span>

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<pre style="margin: 0;">+<span id="LC460" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">tcIsForAllTy</span> <span class="n" style="color: #333;">ty</span></span>

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<pre style="margin: 0;">+<span id="LC461" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">addErrTc</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">illegalForeignTyErr</span> <span class="n" style="color: #333;">result</span> <span class="p">(</span><span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"Unexpected nested forall"</span><span class="p">)</span></span>

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<pre style="margin: 0;">+<span id="LC462" class="line" lang="haskell"></span>

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<pre style="margin: 0;"> <span id="LC463" class="line" lang="haskell">  <span class="c1" style="color: #998; font-style: italic;">-- Case for non-IO result type with FFI Import</span></span>

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<pre style="margin: 0;"> <span id="LC464" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">not</span> <span class="n" style="color: #333;">non_io_result_ok</span></span>

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<pre style="margin: 0;"> <span id="LC465" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">addErrTc</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">illegalForeignTyErr</span> <span class="n" style="color: #333;">result</span> <span class="p">(</span><span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"IO result type expected"</span><span class="p">)</span></span>

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<br>

</li>

<li id="2b8f04584fafff0b8f78c8867b06665527f31762">

<a href="https://gitlab.haskell.org/ghc/ghc/compare/3c8d1989a19faa65287c976fecfdbde96995d367...26736f3c71df568f5fb71e2fb25d2534efb94759#2b8f04584fafff0b8f78c8867b06665527f31762"><strong>docs/users_guide/ffi-chap.rst</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">@@ -14,9 +14,10 @@ Foreign function interface (FFI)</td>

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<pre style="margin: 0;"> <span id="LC14" class="line" lang="plaintext"></span>

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<pre style="margin: 0;"> <span id="LC15" class="line" lang="plaintext">    Allow use of the Haskell foreign function interface.</span>

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<td class="diff-line-num old_line" data-linenumber="16" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

16

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16

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

</pre>

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<td class="diff-line-num old old_line" data-linenumber="17" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

17

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<td class="diff-line-num new_line old" data-linenumber="17" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC17" class="line" lang="plaintext">GHC (mostly) conforms to the Haskell Foreign Function Interface, whose</span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="18" 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">

18

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<td class="diff-line-num new_line old" data-linenumber="17" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC18" class="line" lang="plaintext">definition is part of the Haskell Report on</span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="19" 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">

19

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<td class="diff-line-num new_line old" data-linenumber="17" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC19" class="line" lang="plaintext">`http://www.haskell.org/ <http://www.haskell.org/>`__.</span>

</pre>

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<td class="diff-line-num new old_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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<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="plaintext">GHC (mostly) conforms to the Haskell Foreign Function Interface as specified</span>

</pre>

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<td class="diff-line-num new old_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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<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="plaintext">in the Haskell Report. Refer to the `relevant chapter</span>

</pre>

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<td class="diff-line-num new old_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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<td class="diff-line-num new new_line" data-linenumber="19" 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">

19

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<pre style="margin: 0;">+<span id="LC19" class="line" lang="plaintext"><https://www.haskell.org/onlinereport/haskell2010/haskellch8.html>_`</span>

</pre>

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<td class="diff-line-num new old_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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<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="plaintext">of the Haskell Report for more details.</span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="20" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

20

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21

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<pre style="margin: 0;"> <span id="LC21" class="line" lang="plaintext"></span>

</pre>

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

21

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<td class="diff-line-num new_line" data-linenumber="22" 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">

22

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<pre style="margin: 0;"> <span id="LC22" class="line" lang="plaintext">FFI support is enabled by default, but can be enabled or disabled</span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="22" 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">

22

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<td class="diff-line-num new_line" data-linenumber="23" 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">

23

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

<pre style="margin: 0;"> <span id="LC23" class="line" lang="plaintext">explicitly with the :extension:`ForeignFunctionInterface` flag.</span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="102" 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="103" 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">@@ -102,6 +103,25 @@ OK: ::</td>

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<td class="diff-line-num old_line" data-linenumber="102" 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">

102

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<td class="diff-line-num new_line" data-linenumber="103" 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="LC103" class="line" lang="plaintext">       foreign import foo :: Int -> MyIO Int</span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="103" 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="104" 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="LC104" class="line" lang="plaintext">       foreign import "dynamic" baz :: (Int -> MyIO Int) -> CInt -> MyIO Int</span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="104" 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="105" 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="LC105" class="line" lang="plaintext"></span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="105" 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="106" 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="LC106" class="line" lang="plaintext">.. _ffi-foralls:</span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="105" 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="107" 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="LC107" class="line" lang="plaintext"></span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="105" 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="108" 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="LC108" class="line" lang="plaintext">Explicit ``forall``s in foreign types</span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="105" 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="109" 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="LC109" class="line" lang="plaintext">~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~</span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="105" 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="110" 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">

110

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<pre style="margin: 0;">+<span id="LC110" class="line" lang="plaintext"></span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="105" 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="111" 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">

111

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<pre style="margin: 0;">+<span id="LC111" class="line" lang="plaintext">The type variables in the type of a foreign declaration may be quantified with</span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="105" 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="112" 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">

112

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<pre style="margin: 0;">+<span id="LC112" class="line" lang="plaintext">an explicit ``forall`` by using the :extension:`ExplicitForAll` language</span>

</pre>

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<pre style="margin: 0;">+<span id="LC113" class="line" lang="plaintext">extension, as in the following example: ::</span>

</pre>

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<pre style="margin: 0;">+<span id="LC114" class="line" lang="plaintext"></span>

</pre>

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<pre style="margin: 0;">+<span id="LC115" class="line" lang="plaintext">    {-# LANGUAGE ExplicitForAll #-}</span>

</pre>

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<pre style="margin: 0;">+<span id="LC116" class="line" lang="plaintext">    foreign import ccall "mmap" c_mmap :: forall a. CSize -> IO (Ptr a)</span>

</pre>

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<pre style="margin: 0;">+<span id="LC117" class="line" lang="plaintext"></span>

</pre>

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<pre style="margin: 0;">+<span id="LC118" class="line" lang="plaintext">Note that an explicit ``forall`` must appear at the front of the type signature</span>

</pre>

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<pre style="margin: 0;">+<span id="LC119" class="line" lang="plaintext">and is not permitted to appear nested within the type, as in the following</span>

</pre>

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<pre style="margin: 0;">+<span id="LC120" class="line" lang="plaintext">(erroneous) examples: ::</span>

</pre>

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<pre style="margin: 0;">+<span id="LC121" class="line" lang="plaintext"></span>

</pre>

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<pre style="margin: 0;">+<span id="LC122" class="line" lang="plaintext">    foreign import ccall "mmap" c_mmap' :: CSize -> forall a. IO (Ptr a)</span>

</pre>

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<pre style="margin: 0;">+<span id="LC123" class="line" lang="plaintext">    foreign import ccall quux :: (forall a. Ptr a) -> IO ()</span>

</pre>

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<pre style="margin: 0;">+<span id="LC124" class="line" lang="plaintext"></span>

</pre>

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<pre style="margin: 0;"> <span id="LC125" class="line" lang="plaintext">.. _ffi-prim:</span>

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<pre style="margin: 0;"> <span id="LC126" class="line" lang="plaintext"></span>

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<pre style="margin: 0;"> <span id="LC127" class="line" lang="plaintext">Primitive imports</span>

</pre>

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<br>

</li>

<li id="484e50173b324b5842d294580ec9ed8a7b0d5d38">

<a href="https://gitlab.haskell.org/ghc/ghc/compare/3c8d1989a19faa65287c976fecfdbde96995d367...26736f3c71df568f5fb71e2fb25d2534efb94759#484e50173b324b5842d294580ec9ed8a7b0d5d38"><strong>libraries/base/GHC/Conc/Sync.hs</strong></a>

<hr>

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<td class="diff-line-num unfold js-unfold new_line" data-linenumber="113" 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">@@ -113,7 +113,7 @@ import GHC.IORef</td>

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<pre style="margin: 0;"> <span id="LC113" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.MVar</span></span>

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<pre style="margin: 0;"> <span id="LC114" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Ptr</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC115" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Real</span>         <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;">fromIntegral</span> <span class="p">)</span></span>

</pre>

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<pre style="margin: 0;">-<span id="LC116" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Show</span>         <span class="p">(</span> <span class="kt" style="color: #458; font-weight: 600;">Show</span><span class="p">(</span><span class="o" style="font-weight: 600;">..</span><span class="p">),</span> <span class="nf" style="color: #900; font-weight: 600;">showString</span> <span class="p">)</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC116" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Show</span>         <span class="p">(</span> <span class="kt" style="color: #458; font-weight: 600;">Show</span><span class="p">(</span><span class="o" style="font-weight: 600;">..</span><span class="p">),</span> <span class="nf" style="color: #900; font-weight: 600;">show<span class="idiff left">Paren</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="nf" style="color: #900; font-weight: 600;"><span class="idiff right">show</span>String</span> <span class="p">)</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC117" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Stable</span>       <span class="p">(</span> <span class="kt" style="color: #458; font-weight: 600;">StablePtr</span><span class="p">(</span><span class="o" style="font-weight: 600;">..</span><span class="p">)</span> <span class="p">)</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC118" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Weak</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC119" class="line" lang="haskell"></span>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="145" 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="145" 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">@@ -145,7 +145,7 @@ This misfeature will hopefully be corrected at a later date.</td>

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<pre style="margin: 0;"> <span id="LC145" class="line" lang="haskell"></span>

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<td class="diff-line-num old_line" data-linenumber="146" 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="LC146" class="line" lang="haskell"><span class="cd">-- | @since 4.2.0.0</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="147" 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="LC147" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">instance</span> <span class="kt" style="color: #458; font-weight: 600;">Show</span> <span class="kt" style="color: #458; font-weight: 600;">ThreadId</span> <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="148" 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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<td class="diff-line-num new_line old" data-linenumber="148" 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="LC148" class="line" lang="haskell">   <span class="n" style="color: #333;">showsPrec</span> <span class="n" style="color: #333;">d</span> <span class="n" style="color: #333;">t</span> <span class="o" style="font-weight: 600;">=</span></span>

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<td class="diff-line-num new old_line" data-linenumber="149" 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="LC148" class="line" lang="haskell">   <span class="n" style="color: #333;">showsPrec</span> <span class="n" style="color: #333;">d</span> <span class="n" style="color: #333;">t</span> <span class="o" style="font-weight: 600;">=</span><span class="idiff left"> </span><span class="n" style="color: #333;"><span class="idiff">showParen</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="n" style="color: #333;"><span class="idiff">d</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">>=</span></span><span class="idiff"> </span><span class="mi" style="color: #099;"><span class="idiff">11</span></span><span class="p"><span class="idiff">)</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff right">$</span></span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC149" class="line" lang="haskell">        <span class="n" style="color: #333;">showString</span> <span class="s" style="color: #d14;">"ThreadId "</span> <span class="o" style="font-weight: 600;">.</span></span>

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<pre style="margin: 0;"> <span id="LC150" class="line" lang="haskell">        <span class="n" style="color: #333;">showsPrec</span> <span class="n" style="color: #333;">d</span> <span class="p">(</span><span class="n" style="color: #333;">getThreadId</span> <span class="p">(</span><span class="n" style="color: #333;">id2TSO</span> <span class="n" style="color: #333;">t</span><span class="p">))</span></span>

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<pre style="margin: 0;"> <span id="LC151" class="line" lang="haskell"></span>

</pre>

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<br>

</li>

<li id="4759adf3cad00f03c51fce00cc09f617b36d46d0">

<a href="https://gitlab.haskell.org/ghc/ghc/compare/3c8d1989a19faa65287c976fecfdbde96995d367...26736f3c71df568f5fb71e2fb25d2534efb94759#4759adf3cad00f03c51fce00cc09f617b36d46d0"><strong>rts/sm/CNF.h</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">@@ -15,9 +15,6 @@</td>

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

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<pre style="margin: 0;"> <span id="LC16" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#include "BeginPrivate.h"</span></span>

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

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<pre style="margin: 0;">-<span id="LC18" class="line" lang="c"><span class="kt" style="color: #458; font-weight: 600;">void</span>              <span class="n" style="color: #333;">initCompact</span>  <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">void</span><span class="p">);</span></span>

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<pre style="margin: 0;">-<span id="LC19" class="line" lang="c"><span class="kt" style="color: #458; font-weight: 600;">void</span>              <span class="n" style="color: #333;">exitCompact</span>  <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">void</span><span class="p">);</span></span>

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<pre style="margin: 0;">-<span id="LC20" class="line" lang="c"></span>

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<pre style="margin: 0;"> <span id="LC18" class="line" lang="c"><span class="n" style="color: #333;">StgCompactNFData</span> <span class="o" style="font-weight: 600;">*</span><span class="n" style="color: #333;">compactNew</span>   <span class="p">(</span><span class="n" style="color: #333;">Capability</span>      <span class="o" style="font-weight: 600;">*</span><span class="n" style="color: #333;">cap</span><span class="p">,</span></span>

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<pre style="margin: 0;"> <span id="LC19" class="line" lang="c">                                <span class="n" style="color: #333;">StgWord</span>          <span class="n" style="color: #333;">size</span><span class="p">);</span></span>

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<pre style="margin: 0;"> <span id="LC20" class="line" lang="c"><span class="kt" style="color: #458; font-weight: 600;">void</span>              <span class="n" style="color: #333;">compactResize</span><span class="p">(</span><span class="n" style="color: #333;">Capability</span>       <span class="o" style="font-weight: 600;">*</span><span class="n" style="color: #333;">cap</span><span class="p">,</span></span>

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</li>

<li id="ae1ed6d198d50aee849f1e070a5a69aa07a92f2e">

<a href="https://gitlab.haskell.org/ghc/ghc/compare/3c8d1989a19faa65287c976fecfdbde96995d367...26736f3c71df568f5fb71e2fb25d2534efb94759#ae1ed6d198d50aee849f1e070a5a69aa07a92f2e"><strong>testsuite/tests/codeGen/should_compile/T16449_1.hs</strong></a>

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<pre style="margin: 0;">+<span id="LC1" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">module</span> <span class="nn" style="color: #555;">T16449_1</span> <span class="kr" style="font-weight: 600;">where</span></span>

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

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<pre style="margin: 0;">+<span id="LC3" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Data.Bits</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">setBit</span><span class="p">)</span></span>

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

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<pre style="margin: 0;">+<span id="LC5" class="line" lang="haskell"><span class="n" style="color: #333;">f</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span></span>

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<pre style="margin: 0;">+<span id="LC6" class="line" lang="haskell"><span class="n" style="color: #333;">f</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">foldl</span> <span class="n" style="color: #333;">setter</span> <span class="mi" style="color: #099;">0</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">zip</span> <span class="p">[</span><span class="mi" style="color: #099;">0</span><span class="o" style="font-weight: 600;">..</span><span class="p">]</span> <span class="p">[</span><span class="nb" style="color: #0086b3;">()</span><span class="p">]</span></span>

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<pre style="margin: 0;">+<span id="LC7" class="line" lang="haskell">  <span class="kr" style="font-weight: 600;">where</span></span>

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<pre style="margin: 0;">+<span id="LC8" class="line" lang="haskell">    <span class="n" style="color: #333;">setter</span> <span class="n" style="color: #333;">v</span> <span class="p">(</span><span class="n" style="color: #333;">ix</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;">setBit</span> <span class="n" style="color: #333;">v</span> <span class="n" style="color: #333;">ix</span></span></pre>

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<br>

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<li id="6b1c188363067aa37c05e3a281dad45535511b14">

<a href="https://gitlab.haskell.org/ghc/ghc/compare/3c8d1989a19faa65287c976fecfdbde96995d367...26736f3c71df568f5fb71e2fb25d2534efb94759#6b1c188363067aa37c05e3a281dad45535511b14"><strong>testsuite/tests/codeGen/should_compile/all.T</strong></a>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="59" 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="59" 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">@@ -59,3 +59,5 @@ test('T15155',</td>

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<pre style="margin: 0;"> <span id="LC59" class="line" lang="perl"></span>

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<pre style="margin: 0;"> <span id="LC60" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">(</span><span class="s" style="color: #d14;">'T15155l'</span><span class="p">,</span> <span class="nv" style="color: #008080;">when</span><span class="p">(</span><span class="nv" style="color: #008080;">unregisterised</span><span class="p">(),</span> <span class="nv" style="color: #008080;">skip</span><span class="p">),</span></span>

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<pre style="margin: 0;"> <span id="LC61" class="line" lang="perl">     <span class="nv" style="color: #008080;">makefile_test</span><span class="p">,</span> <span class="o" style="font-weight: 600;">[]</span><span class="p">)</span></span>

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<pre style="margin: 0;">+<span id="LC62" class="line" lang="perl"></span>

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<pre style="margin: 0;">+<span id="LC63" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">(</span><span class="s" style="color: #d14;">'T16449_1'</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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</li>

<li id="4d59cf0c96c12a05bf8356f74fc6e243511066d1">

<a href="https://gitlab.haskell.org/ghc/ghc/compare/3c8d1989a19faa65287c976fecfdbde96995d367...26736f3c71df568f5fb71e2fb25d2534efb94759#4d59cf0c96c12a05bf8356f74fc6e243511066d1"><strong>testsuite/tests/codeGen/should_run/T16449_2.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 MagicHash #-}</span></span>

</pre>

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2

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

</pre>

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3

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<pre style="margin: 0;">+<span id="LC3" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">module</span> <span class="nn" style="color: #555;">Main</span> <span class="kr" style="font-weight: 600;">where</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;">import</span> <span class="nn" style="color: #555;">GHC.Prim</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="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Int</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;">-- Shift should be larger than the word size (e.g. 64 on 64-bit) for this test.</span></span>

</pre>

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9

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<pre style="margin: 0;">+<span id="LC9" class="line" lang="haskell"><span class="n" style="color: #333;">main</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">print</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="p">(</span><span class="n" style="color: #333;">uncheckedIShiftL</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="mi" style="color: #099;">1000</span><span class="o" style="font-weight: 600;">#</span><span class="p">))</span></span></pre>

</td>

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<br>

</li>

<li id="fc71411b980ba2e43ce1a3ea8b896057e74537a6">

<a href="https://gitlab.haskell.org/ghc/ghc/compare/3c8d1989a19faa65287c976fecfdbde96995d367...26736f3c71df568f5fb71e2fb25d2534efb94759#fc71411b980ba2e43ce1a3ea8b896057e74537a6"><strong>testsuite/tests/codeGen/should_run/T16449_2.stderr</strong></a>

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

1

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<pre style="margin: 0;">+<span id="LC1" class="line" lang="plaintext">T16449_2: Bad shift length 1000</span></pre>

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</li>

<li id="b9bba9766faf563ab195fb1402f14fa78ad5c66f">

<a href="https://gitlab.haskell.org/ghc/ghc/compare/3c8d1989a19faa65287c976fecfdbde96995d367...26736f3c71df568f5fb71e2fb25d2534efb94759#b9bba9766faf563ab195fb1402f14fa78ad5c66f"><strong>testsuite/tests/codeGen/should_run/all.T</strong></a>

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

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

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -195,3 +195,4 @@ test('T15892',</td>

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195

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<pre style="margin: 0;"> <span id="LC195" class="line" lang="perl">        <span class="nv" style="color: #008080;">extra_run_opts</span><span class="p">(</span><span class="s" style="color: #d14;">'+RTS -G1 -A32k -RTS'</span><span class="p">)</span> <span class="p">],</span></span>

</pre>

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196

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196

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<pre style="margin: 0;"> <span id="LC196" class="line" lang="perl">     <span class="nv" style="color: #008080;">compile_and_run</span><span class="p">,</span> <span class="p">[</span><span class="s" style="color: #d14;">'-O'</span><span class="p">])</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="197" 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">

197

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197

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<pre style="margin: 0;"> <span id="LC197" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">(</span><span class="s" style="color: #d14;">'T16617'</span><span class="p">,</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile_and_run</span><span class="p">,</span> <span class="p">[</span><span class="s" style="color: #d14;">''</span><span class="p">])</span></span>

</pre>

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<td class="diff-line-num new old_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">

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<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">

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<pre style="margin: 0;">+<span id="LC198" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">(</span><span class="s" style="color: #d14;">'T16449_2'</span><span class="p">,</span> <span class="nv" style="color: #008080;">exit_code</span><span class="p">(</span><span class="mi" style="color: #099;">1</span><span class="p">),</span> <span class="nv" style="color: #008080;">compile_and_run</span><span class="p">,</span> <span class="p">[</span><span class="s" style="color: #d14;">''</span><span class="p">])</span></span></pre>

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<li id="8ae3403efd5151d893f104397ad6327ed8e69e13">

<a href="https://gitlab.haskell.org/ghc/ghc/compare/3c8d1989a19faa65287c976fecfdbde96995d367...26736f3c71df568f5fb71e2fb25d2534efb94759#8ae3403efd5151d893f104397ad6327ed8e69e13"><strong>testsuite/tests/ffi/should_fail/T16702.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 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 class="cp" style="color: #999; font-weight: 600;">{-# LANGUAGE RankNTypes #-}</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="5" 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">

5

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

</pre>

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6

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<pre style="margin: 0;">+<span id="LC6" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">module</span> <span class="nn" style="color: #555;">T16702</span> <span class="kr" style="font-weight: 600;">where</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="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Foreign.C.Types</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="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Foreign.Ptr</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="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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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="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>

</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="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 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="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 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;">b</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Type</span><span class="p">)</span><span class="o" style="font-weight: 600;">.</span> <span class="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="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;">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;">"malloc"</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;">malloc1</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">CSize</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">forall</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="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Ptr</span> <span class="n" style="color: #333;">a</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="19" 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">

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;">"malloc"</span></span>

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<pre style="margin: 0;">+<span id="LC21" class="line" lang="haskell">  <span class="n" style="color: #333;">malloc2</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Show</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;">CSize</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">IO</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Ptr</span> <span class="n" style="color: #333;">a</span><span class="p">)</span></span>

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

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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;">"malloc"</span></span>

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<pre style="margin: 0;">+<span id="LC24" class="line" lang="haskell">  <span class="n" style="color: #333;">malloc3</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">CSize</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Show</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="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Ptr</span> <span class="n" style="color: #333;">a</span><span class="p">)</span></span></pre>

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<br>

</li>

<li id="8b6a43d3ade5c92512bc0e2778dcf489b246d024">

<a href="https://gitlab.haskell.org/ghc/ghc/compare/3c8d1989a19faa65287c976fecfdbde96995d367...26736f3c71df568f5fb71e2fb25d2534efb94759#8b6a43d3ade5c92512bc0e2778dcf489b246d024"><strong>testsuite/tests/ffi/should_fail/T16702.stderr</strong></a>

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

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<pre style="margin: 0;">+<span id="LC2" class="line" lang="plaintext">T16702.hs:12:1: error:</span>

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<pre style="margin: 0;">+<span id="LC3" class="line" lang="plaintext">    • Unacceptable result type in foreign declaration:</span>

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<pre style="margin: 0;">+<span id="LC4" class="line" lang="plaintext">        Unexpected nested forall</span>

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<pre style="margin: 0;">+<span id="LC5" class="line" lang="plaintext">    • When checking declaration:</span>

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<pre style="margin: 0;">+<span id="LC6" class="line" lang="plaintext">        foreign import ccall safe "math.h pow" c_pow</span>

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

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<pre style="margin: 0;">+<span id="LC8" class="line" lang="plaintext">             -> forall (a :: Type). CDouble -> forall (b :: Type). CDouble</span>

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

</pre>

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<pre style="margin: 0;">+<span id="LC10" class="line" lang="plaintext">T16702.hs:17:1: error:</span>

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<pre style="margin: 0;">+<span id="LC11" class="line" lang="plaintext">    • Unacceptable result type in foreign declaration:</span>

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<pre style="margin: 0;">+<span id="LC12" class="line" lang="plaintext">        Unexpected nested forall</span>

</pre>

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<pre style="margin: 0;">+<span id="LC13" class="line" lang="plaintext">    • When checking declaration:</span>

</pre>

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<pre style="margin: 0;">+<span id="LC14" class="line" lang="plaintext">        foreign import ccall safe "malloc" malloc1</span>

</pre>

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<pre style="margin: 0;">+<span id="LC15" class="line" lang="plaintext">          :: CSize -> forall a. IO (Ptr a)</span>

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

</pre>

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<pre style="margin: 0;">+<span id="LC17" class="line" lang="plaintext">T16702.hs:20:1: error:</span>

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<pre style="margin: 0;">+<span id="LC18" class="line" lang="plaintext">    • Unacceptable argument type in foreign declaration:</span>

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<pre style="margin: 0;">+<span id="LC19" class="line" lang="plaintext">        ‘Show a’ cannot be marshalled in a foreign call</span>

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<pre style="margin: 0;">+<span id="LC20" class="line" lang="plaintext">    • When checking declaration:</span>

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<pre style="margin: 0;">+<span id="LC21" class="line" lang="plaintext">        foreign import ccall safe "malloc" malloc2</span>

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<pre style="margin: 0;">+<span id="LC22" class="line" lang="plaintext">          :: Show a => CSize -> IO (Ptr a)</span>

</pre>

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

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<pre style="margin: 0;">+<span id="LC24" class="line" lang="plaintext">T16702.hs:23:1: error:</span>

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<pre style="margin: 0;">+<span id="LC25" class="line" lang="plaintext">    • Unacceptable argument type in foreign declaration:</span>

</pre>

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<pre style="margin: 0;">+<span id="LC26" class="line" lang="plaintext">        ‘Show a’ cannot be marshalled in a foreign call</span>

</pre>

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<pre style="margin: 0;">+<span id="LC27" class="line" lang="plaintext">    • When checking declaration:</span>

</pre>

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<pre style="margin: 0;">+<span id="LC28" class="line" lang="plaintext">        foreign import ccall safe "malloc" malloc3</span>

</pre>

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<pre style="margin: 0;">+<span id="LC29" class="line" lang="plaintext">          :: CSize -> Show a => IO (Ptr a)</span></pre>

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<br>

</li>

<li id="959604952ad853722a516e17c23d0cf7a5aa7815">

<a href="https://gitlab.haskell.org/ghc/ghc/compare/3c8d1989a19faa65287c976fecfdbde96995d367...26736f3c71df568f5fb71e2fb25d2534efb94759#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">@@ -14,6 +14,7 @@ test('T5664', normal, compile_fail, ['-v0'])</td>

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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;">'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>

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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;">'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>

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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;">'T10461'</span><span class="p">,</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile_fail</span><span class="p">,</span> <span class="p">[</span><span class="s" style="color: #d14;">''</span><span class="p">])</span></span>

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<pre style="margin: 0;">+<span id="LC17" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">(</span><span class="s" style="color: #d14;">'T16702'</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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<td class="diff-line-num old_line" data-linenumber="17" 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">

17

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<td class="diff-line-num new_line" data-linenumber="18" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

18

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

</pre>

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<td class="diff-line-num old_line" data-linenumber="18" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

18

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<td class="diff-line-num new_line" data-linenumber="19" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

19

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<pre style="margin: 0;"> <span id="LC19" class="line" lang="perl"><span class="c1" style="color: #998; font-style: italic;"># UnsafeReenter tests implementation of an undefined behavior (calling Haskell</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="19" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

19

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<td class="diff-line-num new_line" data-linenumber="20" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

20

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<pre style="margin: 0;"> <span id="LC20" class="line" lang="perl"><span class="c1" style="color: #998; font-style: italic;"># from an unsafe foreign function) and only makes sense in non-threaded way</span></span>

</pre>

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