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<h3>

Sven Tennie pushed to branch wip/ghc-debug

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/edc224a6d7de8eff05102f7b611be6be5af5022f">edc224a6</a></strong>

<div>

<span>by Sven Tennie</span>

<i>at 2020-08-09T17:53:09+02:00</i>

</div>

<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Fix types in tests

Use `Ptr ()` instead of `Word` to communicate that addresses/pointers

are meant.

</pre>

</li>

<li>

<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/8bbec88b593bae70a547eb31746aa44ab7005a61">8bbec88b</a></strong>

<div>

<span>by Sven Tennie</span>

<i>at 2020-08-09T18:23:39+02:00</i>

</div>

<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Cleanup

</pre>

</li>

<li>

<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/c3aae56da68ed36bd043ee1840c582492ccc3ae0">c3aae56d</a></strong>

<div>

<span>by Sven Tennie</span>

<i>at 2020-08-09T18:50:18+02:00</i>

</div>

<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Introduce LiftedClosure

This is a representation for closures that do not have a represantation

in the Haskell language. I.e. things like TSOs.

</pre>

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<h4>4 changed files:</h4>

<ul>

<li class="file-stats">

<a href="#06b370ff84e63d5f9d23a0e79846fa802f93dc44">

libraries/ghc-heap/GHC/Exts/Heap.hs

</a>

</li>

<li class="file-stats">

<a href="#c805c26c0ac354f472155142f770fa502f8e772f">

libraries/ghc-heap/tests/list_threads_and_misc_roots.hs

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<li class="file-stats">

<a href="#18aaf7d4e678a8c1da63612d2f2af919e3136af0">

libraries/ghc-heap/tests/prof_info.hs

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<li class="file-stats">

<a href="#5b5b439543cf197398612a3792ce3e362c519eab">

libraries/ghc-heap/tests/tso_and_stack_closures.hs

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<h4>Changes:</h4>

<li id="06b370ff84e63d5f9d23a0e79846fa802f93dc44">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/7ea0717a6e3f90ab40715438a9ef85b080156460...c3aae56da68ed36bd043ee1840c582492ccc3ae0#06b370ff84e63d5f9d23a0e79846fa802f93dc44"><strong>libraries/ghc-heap/GHC/Exts/Heap.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">@@ -24,6 +24,7 @@ values, i.e. to investigate sharing and lazy evaluation.</td>

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<pre style="margin: 0;"> <span id="LC24" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">module</span> <span class="nn" style="color: #555;">GHC.Exts.Heap</span> <span class="p">(</span></span>

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<pre style="margin: 0;"> <span id="LC25" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">-- * Closure types</span></span>

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<pre style="margin: 0;"> <span id="LC26" class="line" lang="haskell">      <span class="kt" style="color: #458; font-weight: 600;">Closure</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC27" class="line" lang="haskell">    <span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">LiftedClosure</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC28" class="line" lang="haskell">    <span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">GenClosure</span><span class="p">(</span><span class="o" style="font-weight: 600;">..</span><span class="p">)</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC29" class="line" lang="haskell">    <span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">ClosureType</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="LC30" class="line" lang="haskell">    <span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">PrimType</span><span class="p">(</span><span class="o" style="font-weight: 600;">..</span><span class="p">)</span></span>

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<td class="diff-line-num unfold js-unfold new_line" data-linenumber="91" 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">@@ -90,6 +91,12 @@ import Foreign</td>

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<pre style="margin: 0;"> <span id="LC91" class="line" lang="haskell"></span>

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<pre style="margin: 0;"> <span id="LC92" 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;">"isEndTsoQueue"</span> <span class="n" style="color: #333;">isEndTsoQueue_c</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Addr</span><span class="o" style="font-weight: 600;">#</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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<pre style="margin: 0;"> <span id="LC93" class="line" lang="haskell"></span>

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<pre style="margin: 0;">+<span id="LC94" class="line" lang="haskell"><span class="cd">-- | Some closures (e.g.TSOs) don't have corresponding types to represent them in Haskell.</span></span>

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<pre style="margin: 0;">+<span id="LC95" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- So when we have a pointer to such closure that we want to inspect, we `unsafeCoerce` it</span></span>

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<pre style="margin: 0;">+<span id="LC96" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- into the following `LiftedClosure` lifted type (could be any lifted type) so that the</span></span>

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<pre style="margin: 0;">+<span id="LC97" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- appropriate `instance HasHeapRep (a :: TYPE 'LiftedRep)` is used to decode the closure.</span></span>

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<td class="diff-line-num new new_line" data-linenumber="98" 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="LC98" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">data</span> <span class="kt" style="color: #458; font-weight: 600;">LiftedClosure</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="93" 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="LC99" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="93" 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="LC100" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">class</span> <span class="kt" style="color: #458; font-weight: 600;">HasHeapRep</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="n" style="color: #333;">rep</span><span class="p">)</span> <span class="kr" style="font-weight: 600;">where</span></span>

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<td class="diff-line-num old_line" data-linenumber="94" 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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101

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<pre style="margin: 0;"> <span id="LC101" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="95" 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">

95

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<td class="diff-line-num new_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">

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<pre style="margin: 0;"> <span id="LC102" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">-- | Decode a closure to it's heap representation ('GenClosure').</span></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="97" 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="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">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -97,8 +104,7 @@ class HasHeapRep (a :: TYPE rep) where</td>

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<td class="diff-line-num old_line" data-linenumber="97" 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">

97

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<pre style="margin: 0;"> <span id="LC104" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">-- containing a thunk or an evaluated heap object. Outside it can be a</span></span>

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<td class="diff-line-num old_line" data-linenumber="98" 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="haskell">    <span class="c1" style="color: #998; font-style: italic;">-- 'Word' for "raw" usage of pointers.</span></span>

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<td class="diff-line-num new_line" data-linenumber="106" 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="LC106" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;">-<span id="LC100" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- TODO: Remove Show constraint</span></span>

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<td class="diff-line-num old old_line" data-linenumber="101" 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="LC101" class="line" lang="haskell">    <span class="n" style="color: #333;">getClosureDataX</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;">b</span> <span class="o" style="font-weight: 600;">=></span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC107" class="line" lang="haskell">    <span class="n" style="color: #333;">getClosureDataX</span> <span class="o" style="font-weight: 600;">::</span></span>

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<pre style="margin: 0;"> <span id="LC108" class="line" lang="haskell">        <span class="p">(</span><span class="n" style="color: #333;">forall</span> <span class="n" style="color: #333;">c</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">c</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="kt" style="color: #458; font-weight: 600;">StgInfoTable</span><span class="p">,</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">Word</span><span class="p">],</span> <span class="p">[</span><span class="n" style="color: #333;">b</span><span class="p">]))</span></span>

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<td class="diff-line-num new_line" data-linenumber="109" 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="LC109" class="line" lang="haskell">        <span class="c1" style="color: #998; font-style: italic;">-- ^ Helper function to get info table, memory and pointers of the</span></span>

</pre>

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<td class="diff-line-num new_line" data-linenumber="110" 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="LC110" class="line" lang="haskell">        <span class="c1" style="color: #998; font-style: italic;">-- closure. The order of @[b]@ is significant and determined by</span></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="188" 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="194" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -188,8 +194,7 @@ getClosureData = getClosureDataX getClosureRaw</td>

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<td class="diff-line-num new_line" data-linenumber="194" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC194" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--</span></span>

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<td class="diff-line-num old_line" data-linenumber="189" 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="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">

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<pre style="margin: 0;"> <span id="LC195" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- For most use cases 'getClosureData' is an easier to use alternative.</span></span>

</pre>

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<td class="diff-line-num new_line" data-linenumber="196" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC196" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num new_line old" data-linenumber="197" 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="LC191" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- TODO: Remove Show constraint</span></span>

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<pre style="margin: 0;">-<span id="LC192" class="line" lang="haskell"><span class="n" style="color: #333;">getClosureX</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="n" style="color: #333;">b</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;">b</span> <span class="o" style="font-weight: 600;">=></span></span>

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<pre style="margin: 0;">+<span id="LC197" class="line" lang="haskell"><span class="n" style="color: #333;">getClosureX</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="n" style="color: #333;">b</span><span class="o" style="font-weight: 600;">.</span></span>

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<pre style="margin: 0;"> <span id="LC198" class="line" lang="haskell">            <span class="p">(</span><span class="n" style="color: #333;">forall</span> <span class="n" style="color: #333;">c</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">c</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="kt" style="color: #458; font-weight: 600;">StgInfoTable</span><span class="p">,</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">Word</span><span class="p">],</span> <span class="p">[</span><span class="n" style="color: #333;">b</span><span class="p">]))</span></span>

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<pre style="margin: 0;"> <span id="LC199" class="line" lang="haskell">            <span class="c1" style="color: #998; font-style: italic;">-- ^ Helper function to get info table, memory and pointers of the</span></span>

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<pre style="margin: 0;"> <span id="LC200" class="line" lang="haskell">            <span class="c1" style="color: #998; font-style: italic;">-- closure</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">@@ -347,10 +352,6 @@ getClosureX get_closure_raw x = do</td>

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<pre style="margin: 0;"> <span id="LC352" class="line" lang="haskell"></span>

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<pre style="margin: 0;"> <span id="LC353" class="line" lang="haskell">            <span class="n" style="color: #333;">allocaArray</span> <span class="p">(</span><span class="n" style="color: #333;">length</span> <span class="n" style="color: #333;">wds</span><span class="p">)</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">ptr</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="LC354" class="line" lang="haskell">                <span class="n" style="color: #333;">pokeArray</span> <span class="n" style="color: #333;">ptr</span> <span class="n" style="color: #333;">wds</span></span>

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<pre style="margin: 0;">-<span id="LC350" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- TODO: remove prints</span></span>

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<pre style="margin: 0;">-<span id="LC351" class="line" lang="haskell">                <span class="n" style="color: #333;">print</span> <span class="o" style="font-weight: 600;">$</span> <span class="s" style="color: #d14;">"tso ptr : "</span> <span class="o" style="font-weight: 600;">++</span> <span class="n" style="color: #333;">show</span> <span class="n" style="color: #333;">ptr</span></span>

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<pre style="margin: 0;">-<span id="LC352" class="line" lang="haskell">                <span class="n" style="color: #333;">print</span> <span class="o" style="font-weight: 600;">$</span> <span class="s" style="color: #d14;">"tso pts : "</span> <span class="o" style="font-weight: 600;">++</span> <span class="n" style="color: #333;">show</span> <span class="n" style="color: #333;">pts</span></span>

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<pre style="margin: 0;">-<span id="LC353" class="line" lang="haskell">                <span class="n" style="color: #333;">print</span> <span class="o" style="font-weight: 600;">$</span> <span class="s" style="color: #d14;">"tso info table : "</span> <span class="o" style="font-weight: 600;">++</span> <span class="n" style="color: #333;">show</span> <span class="n" style="color: #333;">itbl</span></span>

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<pre style="margin: 0;"> <span id="LC355" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- TODO: Does this work? I.e. do we emit EndTSOQueues?</span></span>

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<pre style="margin: 0;"> <span id="LC356" class="line" lang="haskell">                <span class="kr" style="font-weight: 600;">if</span> <span class="n" style="color: #333;">isEndTsoQueue_c</span> <span class="p">(</span><span class="n" style="color: #333;">unpackPtr</span> <span class="n" style="color: #333;">ptr</span><span class="p">)</span> <span class="kr" style="font-weight: 600;">then</span></span>

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<pre style="margin: 0;"> <span id="LC357" class="line" lang="haskell">                    <span class="n" style="color: #333;">pure</span> <span class="o" style="font-weight: 600;">$</span> <span class="kt" style="color: #458; font-weight: 600;">EndTSOQueue</span> <span class="p">{</span> <span class="n" style="color: #333;">info</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">itbl</span> <span class="p">}</span></span>

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</li>

<li id="c805c26c0ac354f472155142f770fa502f8e772f">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/7ea0717a6e3f90ab40715438a9ef85b080156460...c3aae56da68ed36bd043ee1840c582492ccc3ae0#c805c26c0ac354f472155142f770fa502f8e772f"><strong>libraries/ghc-heap/tests/list_threads_and_misc_roots.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">@@ -7,12 +7,6 @@ import Control.Concurrent</td>

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<pre style="margin: 0;"> <span id="LC7" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Exts.Heap</span></span>

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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;">GHC.Exts</span></span>

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

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

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<pre style="margin: 0;">-<span id="LC11" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Invent a type to bypass the type constraints of getClosureData.</span></span>

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<pre style="margin: 0;">-<span id="LC12" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Infact this will be a Word#, that is directly given to unpackClosure#</span></span>

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<pre style="margin: 0;">-<span id="LC13" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- (which is a primop that expects a pointer to a closure).</span></span>

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<pre style="margin: 0;">-<span id="LC14" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">data</span> <span class="kt" style="color: #458; font-weight: 600;">FoolClosure</span></span>

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

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<pre style="margin: 0;"> <span id="LC10" class="line" lang="haskell"><span class="n" style="color: #333;">foreign</span> <span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">ccall</span> <span class="n" style="color: #333;">safe</span> <span class="s" style="color: #d14;">"list_threads_and_misc_roots_c.h listThreadsAndMiscRoots"</span></span>

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<pre style="margin: 0;"> <span id="LC11" class="line" lang="haskell">    <span class="n" style="color: #333;">listThreadsAndMiscRoots_c</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">IO</span> <span class="nb" style="color: #0086b3;">()</span></span>

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<pre style="margin: 0;"> <span id="LC12" class="line" lang="haskell"></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">@@ -20,13 +14,13 @@ foreign import ccall safe "list_threads_and_misc_roots_c.h getTSOCount"</td>

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<pre style="margin: 0;"> <span id="LC14" class="line" lang="haskell">    <span class="n" style="color: #333;">getTSOCount_c</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">IO</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span></span>

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

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<pre style="margin: 0;"> <span id="LC16" class="line" lang="haskell"><span class="n" style="color: #333;">foreign</span> <span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">ccall</span> <span class="n" style="color: #333;">safe</span> <span class="s" style="color: #d14;">"list_threads_and_misc_roots_c.h getTSOs"</span></span>

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<pre style="margin: 0;">-<span id="LC23" class="line" lang="haskell">    <span class="n" style="color: #333;">getTSOs_c</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="kt" style="color: #458; font-weight: 600;"><span class="idiff left right">Word</span></span><span class="p">)</span></span>

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<pre style="margin: 0;">+<span id="LC17" class="line" lang="haskell">    <span class="n" style="color: #333;">getTSOs_c</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="p"><span class="idiff left">(</span></span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">Ptr</span></span><span class="idiff"> </span><span class="nb" style="color: #0086b3;"><span class="idiff">()</span></span><span class="p"><span class="idiff right">)</span>)</span></span>

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

</pre>

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<td class="diff-line-num old_line" data-linenumber="25" 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="19" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

19

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<pre style="margin: 0;"> <span id="LC19" class="line" lang="haskell"><span class="n" style="color: #333;">foreign</span> <span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">ccall</span> <span class="n" style="color: #333;">safe</span> <span class="s" style="color: #d14;">"list_threads_and_misc_roots_c.h getMiscRootsCount"</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="26" 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">

26

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

20

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<pre style="margin: 0;"> <span id="LC20" class="line" lang="haskell">    <span class="n" style="color: #333;">getMiscRootsCount_c</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">IO</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="27" 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">

27

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<td class="diff-line-num new_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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<pre style="margin: 0;"> <span id="LC21" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="28" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

28

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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="haskell"><span class="n" style="color: #333;">foreign</span> <span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">ccall</span> <span class="n" style="color: #333;">safe</span> <span class="s" style="color: #d14;">"list_threads_and_misc_roots_c.h getMiscRoots"</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="29" 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">

29

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<td class="diff-line-num new_line old" data-linenumber="23" 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="LC29" class="line" lang="haskell">    <span class="n" style="color: #333;">getMiscRoots_c</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="kt" style="color: #458; font-weight: 600;"><span class="idiff left right">Word</span></span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="30" 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="23" 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="LC23" class="line" lang="haskell">    <span class="n" style="color: #333;">getMiscRoots_c</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="p"><span class="idiff left">(</span></span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">Ptr</span></span><span class="idiff"> </span><span class="nb" style="color: #0086b3;"><span class="idiff">()</span></span><span class="p"><span class="idiff right">)</span>)</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="30" 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="24" 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="LC24" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="31" 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="25" 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="LC25" class="line" lang="haskell"><span class="n" style="color: #333;">main</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">IO</span> <span class="nb" style="color: #0086b3;">()</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="32" 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="26" 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="LC26" class="line" lang="haskell"><span class="n" style="color: #333;">main</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="50" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="44" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -50,13 +44,13 @@ main = do</td>

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

</pre>

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<td class="diff-line-num old_line" data-linenumber="51" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<td class="diff-line-num new_line" data-linenumber="45" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC45" class="line" lang="haskell">    <span class="n" style="color: #333;">return</span> <span class="nb" style="color: #0086b3;">()</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="52" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<td class="diff-line-num new_line" data-linenumber="46" 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="LC46" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="53" 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="47" 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="LC53" class="line" lang="haskell"><span class="n" style="color: #333;">createClosure</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left right">Word</span></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;">GenClosure</span> <span class="kt" style="color: #458; font-weight: 600;">Box</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="54" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="47" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC47" class="line" lang="haskell"><span class="n" style="color: #333;">createClosure</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left">Ptr</span></span><span class="idiff"> </span><span class="nb" style="color: #0086b3;"><span class="idiff right">()</span></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;">GenClosure</span> <span class="kt" style="color: #458; font-weight: 600;">Box</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="54" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<td class="diff-line-num new_line" data-linenumber="48" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC48" class="line" lang="haskell"><span class="n" style="color: #333;">createClosure</span> <span class="n" style="color: #333;">tsoPtr</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="55" 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="49" 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="LC55" class="line" lang="haskell">    <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;"><span class="idiff left">wPtr</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">unpackWord</span></span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">tsoPtr</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="56" 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="49" 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="LC56" class="line" lang="haskell">    <span class="n" style="color: #333;">getClosureData</span> <span class="p">((</span><span class="n" style="color: #333;">unsafeCoerce</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;"><span class="idiff left">wPtr</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="kt" style="color: #458; font-weight: 600;"><span class="idiff right">Fool</span>Closure</span><span class="p">)</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC49" class="line" lang="haskell">    <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;"><span class="idiff left">addr</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">unpackAddr</span></span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">tsoPtr</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="57" 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="LC50" class="line" lang="haskell">    <span class="n" style="color: #333;">getClosureData</span> <span class="p">((</span><span class="n" style="color: #333;">unsafeCoerce</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;"><span class="idiff left">addr</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="kt" style="color: #458; font-weight: 600;"><span class="idiff right">Lifted</span>Closure</span><span class="p">)</span></span>

</pre>

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57

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51

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<pre style="margin: 0;"> <span id="LC51" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;">-<span id="LC58" class="line" lang="haskell"><span class="n" style="color: #333;">unpack<span class="idiff left">Word</span></span><span class="o" style="font-weight: 600;"><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="kt" style="color: #458; font-weight: 600;"><span class="idiff">Word</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">-></span></span><span class="idiff"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff right">Word</span></span><span class="o" style="font-weight: 600;">#</span></span>

</pre>

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59

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<pre style="margin: 0;">-<span id="LC59" class="line" lang="haskell"><span class="n" style="color: #333;">unpack<span class="idiff left">Word</span></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="kt" style="color: #458; font-weight: 600;"><span class="idiff">W</span></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">w</span></span><span class="o" style="font-weight: 600;"><span class="idiff">#</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">w</span></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="LC52" class="line" lang="haskell"><span class="n" style="color: #333;">unpack<span class="idiff left">Addr</span></span><span class="o" style="font-weight: 600;"><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="kt" style="color: #458; font-weight: 600;"><span class="idiff">Ptr</span></span><span class="idiff"> </span><span class="nb" style="color: #0086b3;"><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="kt" style="color: #458; font-weight: 600;"><span class="idiff right">Addr</span></span><span class="o" style="font-weight: 600;">#</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC53" class="line" lang="haskell"><span class="n" style="color: #333;">unpack<span class="idiff left">Addr</span></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="kt" style="color: #458; font-weight: 600;"><span class="idiff">Ptr</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">addr</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">addr</span></span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC54" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;"> <span id="LC55" class="line" lang="haskell"><span class="n" style="color: #333;">assertEqual</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Show</span> <span class="n" style="color: #333;">a</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Eq</span> <span class="n" style="color: #333;">a</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=></span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></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="nb" style="color: #0086b3;">()</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC56" class="line" lang="haskell"><span class="n" style="color: #333;">assertEqual</span> <span class="n" style="color: #333;">a</span> <span class="n" style="color: #333;">b</span></span>

</pre>

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<br>

</li>

<li id="18aaf7d4e678a8c1da63612d2f2af919e3136af0">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/7ea0717a6e3f90ab40715438a9ef85b080156460...c3aae56da68ed36bd043ee1840c582492ccc3ae0#18aaf7d4e678a8c1da63612d2f2af919e3136af0"><strong>libraries/ghc-heap/tests/prof_info.hs</strong></a>

<hr>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="14" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="14" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -14,18 +14,13 @@ import Data.List (find)</td>

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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;">include</span> <span class="s" style="color: #d14;">"rts/Constants.h"</span></span>

</pre>

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<td class="diff-line-num new_line" data-linenumber="15" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

15

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

</pre>

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

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<pre style="margin: 0;"> <span id="LC16" class="line" lang="haskell"><span class="n" style="color: #333;">foreign</span> <span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">ccall</span> <span class="n" style="color: #333;">unsafe</span> <span class="s" style="color: #d14;">"create_tso.h create_tso"</span></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">

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<pre style="margin: 0;">-<span id="LC17" class="line" lang="haskell">    <span class="n" style="color: #333;">c_create_tso</span><span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">IO</span> <span class="kt" style="color: #458; font-weight: 600;">Word</span></span>

</pre>

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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="haskell"></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">

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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="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Invent a type to bypass the type constraints of getClosureData.</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="20" 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="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="LC20" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Infact this will be a Word#, that is directly given to unpackClosure#</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="21" 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="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="LC21" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- (which is a primop that expects a pointer to a closure).</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="22" 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="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="LC22" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">data</span> <span class="kt" style="color: #458; font-weight: 600;">FoolStgTSO</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="23" 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="LC17" class="line" lang="haskell">    <span class="n" style="color: #333;">c_create_tso</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="nb" style="color: #0086b3;">()</span><span class="p">)</span></span>

</pre>

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

</pre>

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<td class="diff-line-num old_line" data-linenumber="24" 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="LC19" class="line" lang="haskell"><span class="n" style="color: #333;">createTSOClosure</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;">GenClosure</span> <span class="kt" style="color: #458; font-weight: 600;">Box</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="25" 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="LC20" class="line" lang="haskell"><span class="n" style="color: #333;">createTSOClosure</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="26" 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="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">

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<pre style="margin: 0;"> <span id="LC21" class="line" lang="haskell">    <span class="n" style="color: #333;">ptr</span> <span class="o" style="font-weight: 600;"><-</span> <span class="cp" style="color: #999; font-weight: 600;">{-# SCC "MyCostCentre" #-}</span> <span class="n" style="color: #333;">c_create_tso</span></span>

</pre>

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<td class="diff-line-num new_line old" data-linenumber="22" 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="LC27" class="line" lang="haskell">    <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;"><span class="idiff left">wPtr</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">unpackWord</span></span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">ptr</span></span>

</pre>

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<td class="diff-line-num new_line old" data-linenumber="22" 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="LC28" class="line" lang="haskell">    <span class="n" style="color: #333;">getClosureData</span> <span class="p">((</span><span class="n" style="color: #333;">unsafeCoerce</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;"><span class="idiff left">wPtr</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="kt" style="color: #458; font-weight: 600;"><span class="idiff right">FoolStgTSO</span></span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="29" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="22" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC22" class="line" lang="haskell">    <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;"><span class="idiff left">addr</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">unpackAddr</span></span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">ptr</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="29" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="23" 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="LC23" class="line" lang="haskell">    <span class="n" style="color: #333;">getClosureData</span> <span class="p">((</span><span class="n" style="color: #333;">unsafeCoerce</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;"><span class="idiff left">addr</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="kt" style="color: #458; font-weight: 600;"><span class="idiff right">LiftedClosure</span></span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="29" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC24" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="30" 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="LC25" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- We can make some assumptions about the - otherwise dynamic - properties of</span></span>

</pre>

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<td class="diff-line-num new_line" data-linenumber="26" 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="LC26" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- StgTSO and StgStack, because a new, non-running TSO is created with</span></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="50" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="45" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -50,8 +45,8 @@ main = do</td>

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50

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45

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<pre style="margin: 0;"> <span id="LC45" class="line" lang="haskell">                        <span class="n" style="color: #333;">assertEqual</span> <span class="p">(</span><span class="n" style="color: #333;">cc_link</span> <span class="n" style="color: #333;">myCostCentre</span><span class="p">)</span> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="51" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

51

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<td class="diff-line-num new_line" data-linenumber="46" 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">

46

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<pre style="margin: 0;"> <span id="LC46" 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;">error</span> <span class="s" style="color: #d14;">"MyCostCentre not found!"</span></span>

</pre>

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52

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<td class="diff-line-num new_line" data-linenumber="47" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

47

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

</pre>

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<td class="diff-line-num old old_line" data-linenumber="53" 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">

53

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<td class="diff-line-num new_line old" data-linenumber="48" 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="LC53" class="line" lang="haskell"><span class="n" style="color: #333;">unpack<span class="idiff left">Word</span></span><span class="o" style="font-weight: 600;"><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="kt" style="color: #458; font-weight: 600;"><span class="idiff">Word</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">-></span></span><span class="idiff"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff right">Word</span></span><span class="o" style="font-weight: 600;">#</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="54" 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">

54

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<td class="diff-line-num new_line old" data-linenumber="48" 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="LC54" class="line" lang="haskell"><span class="n" style="color: #333;">unpack<span class="idiff left">Word</span></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="kt" style="color: #458; font-weight: 600;"><span class="idiff">W</span></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">w</span></span><span class="o" style="font-weight: 600;"><span class="idiff">#</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">w</span></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="LC48" class="line" lang="haskell"><span class="n" style="color: #333;">unpack<span class="idiff left">Addr</span></span><span class="o" style="font-weight: 600;"><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="kt" style="color: #458; font-weight: 600;"><span class="idiff">Ptr</span></span><span class="idiff"> </span><span class="nb" style="color: #0086b3;"><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="kt" style="color: #458; font-weight: 600;"><span class="idiff right">Addr</span></span><span class="o" style="font-weight: 600;">#</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC49" class="line" lang="haskell"><span class="n" style="color: #333;">unpack<span class="idiff left">Addr</span></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="kt" style="color: #458; font-weight: 600;"><span class="idiff">Ptr</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">addr</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">addr</span></span></span>

</pre>

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55

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50

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<pre style="margin: 0;"> <span id="LC50" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="56" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC51" class="line" lang="haskell"><span class="n" style="color: #333;">linkedCostCentres</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="kt" style="color: #458; font-weight: 600;">CostCentre</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">CostCentre</span><span class="p">]</span></span>

</pre>

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57

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<td class="diff-line-num new_line" data-linenumber="52" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC52" class="line" lang="haskell"><span class="n" style="color: #333;">linkedCostCentres</span> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">[]</span></span>

</pre>

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<br>

</li>

<li id="5b5b439543cf197398612a3792ce3e362c519eab">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/7ea0717a6e3f90ab40715438a9ef85b080156460...c3aae56da68ed36bd043ee1840c582492ccc3ae0#5b5b439543cf197398612a3792ce3e362c519eab"><strong>libraries/ghc-heap/tests/tso_and_stack_closures.hs</strong></a>

<hr>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="11" 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="11" 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">@@ -11,12 +11,7 @@ import GHC.Word</td>

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<pre style="margin: 0;"> <span id="LC11" class="line" lang="haskell"><span class="o" style="font-weight: 600;">#</span><span class="n" style="color: #333;">include</span> <span class="s" style="color: #d14;">"rts/Constants.h"</span></span>

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

</pre>

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<pre style="margin: 0;"> <span id="LC13" class="line" lang="haskell"><span class="n" style="color: #333;">foreign</span> <span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">ccall</span> <span class="n" style="color: #333;">unsafe</span> <span class="s" style="color: #d14;">"create_tso.h create_tso"</span></span>

</pre>

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<td class="diff-line-num new_line old" data-linenumber="14" 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="LC14" class="line" lang="haskell">    <span class="n" style="color: #333;">c_create_tso</span><span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">IO</span> <span class="kt" style="color: #458; font-weight: 600;">Word</span></span>

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

</pre>

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<pre style="margin: 0;">-<span id="LC16" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Invent a type to bypass the type constraints of getClosureData.</span></span>

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<pre style="margin: 0;">-<span id="LC17" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Infact this will be a Word#, that is directly given to unpackClosure#</span></span>

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<pre style="margin: 0;">-<span id="LC18" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- (which is a primop that expects a pointer to a closure).</span></span>

</pre>

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<pre style="margin: 0;">-<span id="LC19" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">data</span> <span class="kt" style="color: #458; font-weight: 600;">FoolStgTSO</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC14" class="line" lang="haskell">    <span class="n" style="color: #333;">c_create_tso</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="nb" style="color: #0086b3;">()</span><span class="p">)</span></span>

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

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<pre style="margin: 0;"> <span id="LC16" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- We can make some assumptions about the - otherwise dynamic - properties of</span></span>

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<pre style="margin: 0;"> <span id="LC17" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- StgTSO and StgStack, because a new, non-running TSO is created with</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">@@ -60,11 +55,11 @@ main = do</td>

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<pre style="margin: 0;"> <span id="LC55" class="line" lang="haskell"><span class="n" style="color: #333;">createTSOClosure</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;">GenClosure</span> <span class="kt" style="color: #458; font-weight: 600;">Box</span><span class="p">)</span></span>

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<pre style="margin: 0;"> <span id="LC56" class="line" lang="haskell"><span class="n" style="color: #333;">createTSOClosure</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="LC57" class="line" lang="haskell">    <span class="n" style="color: #333;">ptr</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">c_create_tso</span></span>

</pre>

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<pre style="margin: 0;">-<span id="LC63" class="line" lang="haskell">    <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;"><span class="idiff left">wPtr</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">unpackWord</span></span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">ptr</span></span>

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<pre style="margin: 0;">-<span id="LC64" class="line" lang="haskell">    <span class="n" style="color: #333;">getClosureData</span> <span class="p">((</span><span class="n" style="color: #333;">unsafeCoerce</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;"><span class="idiff left">wPtr</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="kt" style="color: #458; font-weight: 600;"><span class="idiff right">FoolStgTSO</span></span><span class="p">)</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC58" class="line" lang="haskell">    <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;"><span class="idiff left">addr</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">unpackAddr</span></span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">ptr</span></span>

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<pre style="margin: 0;">+<span id="LC59" class="line" lang="haskell">    <span class="n" style="color: #333;">getClosureData</span> <span class="p">((</span><span class="n" style="color: #333;">unsafeCoerce</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;"><span class="idiff left">addr</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="kt" style="color: #458; font-weight: 600;"><span class="idiff right">LiftedClosure</span></span><span class="p">)</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC60" class="line" lang="haskell"></span>

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<pre style="margin: 0;">-<span id="LC66" class="line" lang="haskell"><span class="n" style="color: #333;">unpack<span class="idiff left">Word</span></span><span class="o" style="font-weight: 600;"><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="kt" style="color: #458; font-weight: 600;"><span class="idiff">Word</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">-></span></span><span class="idiff"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff right">Word</span></span><span class="o" style="font-weight: 600;">#</span></span>

</pre>

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<pre style="margin: 0;">-<span id="LC67" class="line" lang="haskell"><span class="n" style="color: #333;">unpack<span class="idiff left">Word</span></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="kt" style="color: #458; font-weight: 600;"><span class="idiff">W</span></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">w</span></span><span class="o" style="font-weight: 600;"><span class="idiff">#</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">w</span></span><span class="o" style="font-weight: 600;"><span class="idiff right">#</span></span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="68" 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="61" 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">

61

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<pre style="margin: 0;">+<span id="LC61" class="line" lang="haskell"><span class="n" style="color: #333;">unpack<span class="idiff left">Addr</span></span><span class="o" style="font-weight: 600;"><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="kt" style="color: #458; font-weight: 600;"><span class="idiff">Ptr</span></span><span class="idiff"> </span><span class="nb" style="color: #0086b3;"><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="kt" style="color: #458; font-weight: 600;"><span class="idiff right">Addr</span></span><span class="o" style="font-weight: 600;">#</span></span>

</pre>

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62

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<pre style="margin: 0;">+<span id="LC62" class="line" lang="haskell"><span class="n" style="color: #333;">unpack<span class="idiff left">Addr</span></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="kt" style="color: #458; font-weight: 600;"><span class="idiff">Ptr</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">addr</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">addr</span></span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="68" 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">

68

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

63

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<pre style="margin: 0;"> <span id="LC63" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="69" 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">

69

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64

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<pre style="margin: 0;"> <span id="LC64" class="line" lang="haskell"><span class="n" style="color: #333;">assertEqual</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Show</span> <span class="n" style="color: #333;">a</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Eq</span> <span class="n" style="color: #333;">a</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=></span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></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="nb" style="color: #0086b3;">()</span></span>

</pre>

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70

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65

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<pre style="margin: 0;"> <span id="LC65" class="line" lang="haskell"><span class="n" style="color: #333;">assertEqual</span> <span class="n" style="color: #333;">a</span> <span class="n" style="color: #333;">b</span></span>

</pre>

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