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GitLab

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<h3>

Ben Gamari pushed to branch ghc-8.10

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/d7e4813cae8c4f37135ffb8f6b979eec8da8abf2">d7e4813c</a></strong>

<div>

<span>by Ben Gamari</span>

<i>at 2020-12-07T15:10:41+00:00</i>

</div>

<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">rts/Sanity: Avoid nasty race in weak pointer sanity-checking

See Note [Racing weak pointer evacuation] for all of the gory details.

</pre>

</li>

<li>

<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/ef241371de7c4546b3ad45d7d190965be735f998">ef241371</a></strong>

<div>

<span>by GHC GitLab CI</span>

<i>at 2020-12-07T15:11:57+00:00</i>

</div>

<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">nonmoving: Fix regression from TSAN work

The TSAN rework (specifically aad1f803) introduced a subtle regression

in GC.c, swapping `g0` in place of `gen`. Whoops!

Fixes #18997.

(cherry picked from commit 21c807df67afe1aee7bf4a964a00cc78ef19e00f)

</pre>

</li>

<li>

<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/38f2f62729ff7a47001bf5ef00c3b34ec5398999">38f2f627</a></strong>

<div>

<span>by GHC GitLab CI</span>

<i>at 2020-12-07T15:12:10+00:00</i>

</div>

<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">rts/Messages: Add missing write barrier in THROWTO message update

After a THROWTO message has been handle the message closure is

overwritten by a NULL message. We must ensure that the original

closure's pointers continue to be visible to the nonmoving GC.

(cherry picked from commit 6c2faf158fd26fc06b03c9bd11b6d2cf8e8db572)

</pre>

</li>

<li>

<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/813c52198a4642b9ad27786b9a01c812d9d0b5c4">813c5219</a></strong>

<div>

<span>by GHC GitLab CI</span>

<i>at 2020-12-07T15:12:51+00:00</i>

</div>

<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">nonmoving: Add missing write barrier in shrinkSmallByteArray

(cherry picked from commit 35c22991ae5c22b10ca1a81f0aa888d1939f0b3f)

</pre>

</li>

<li>

<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/de7f220342bf4d2a308ed106f34760ee99d832ab">de7f2203</a></strong>

<div>

<span>by GHC GitLab CI</span>

<i>at 2020-12-07T15:13:01+00:00</i>

</div>

<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Updates: Don't zero slop until closure has been pushed

Ensure that the the free variables have been pushed to the update

remembered set before we zero the slop.

(cherry picked from commit 134f759926bb4163d7ab97e72ce7209ed42f98b9)

</pre>

</li>

<li>

<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/2ba6b268759c2a9dc82bd84a89017ec3190bc2f2">2ba6b268</a></strong>

<div>

<span>by GHC GitLab CI</span>

<i>at 2020-12-07T15:13:15+00:00</i>

</div>

<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">OSThreads: Fix error code checking

pthread_join returns its error code and apparently doesn't set errno.

(cherry picked from commit c488ac737e8ca3813fe6db069cbeb7abba00cfb9)

</pre>

</li>

<li>

<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/7122ff03d98b3b80452d0eaf44e172ed36791aee">7122ff03</a></strong>

<div>

<span>by GHC GitLab CI</span>

<i>at 2020-12-07T15:13:31+00:00</i>

</div>

<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">nonmoving: Don't join to mark_thread on shutdown

The mark thread is not joinable as we detach from it on creation.

(cherry picked from commit ca1ef0e758a3fb787691529a0f8149e9d10b1d00)

</pre>

</li>

<li>

<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/ada68f55f7fd1aadfa850102a579f85de15c00a9">ada68f55</a></strong>

<div>

<span>by Ben Gamari</span>

<i>at 2020-12-07T15:13:46+00:00</i>

</div>

<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">nonmoving: Add reference to Ueno 2016

(cherry picked from commit a3b8375eeb2ce9d2e30f8269f5b489c5bcacc69f)

</pre>

</li>

<li>

<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/4f01c8b4ef2a1ac81f3ea242ef6b41e3f6582f23">4f01c8b4</a></strong>

<div>

<span>by GHC GitLab CI</span>

<i>at 2020-12-07T15:14:20+00:00</i>

</div>

<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">nonmoving: Ensure that evacuated large objects are marked

See Note [Non-moving GC: Marking evacuated objects].

(cherry picked from commit b416189e4004506b89f06f147be37e76f4cd507f)

</pre>

</li>

<li>

<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/658b7fc9bf450b531655745f582ff0d0e369fe33">658b7fc9</a></strong>

<div>

<span>by Ben Gamari</span>

<i>at 2020-12-07T15:14:40+00:00</i>

</div>

<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">rts/linker: Align bssSize to page size when mapping symbol extras

We place symbol_extras right after bss. We also need

to ensure that symbol_extras can be mprotect'd independently from the

rest of the image. To ensure this we round up the size of bss to a page

boundary, thus ensuring that symbol_extras is also page-aligned.

(cherry picked from commit 9f40cf6ca9fb24dbc55f7eae43e2b89aa12bf251)

(cherry picked from commit 4b83b6a8f8ac08e81b6e75c47f133e3ed6bdea95)

</pre>

</li>

<li>

<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/abab915714274070c7afff76bc014d04a8c1f78b">abab9157</a></strong>

<div>

<span>by Ben Gamari</span>

<i>at 2020-12-07T15:15:20+00:00</i>

</div>

<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">rts: Allocate MBlocks with MAP_TOP_DOWN on Windows

As noted in #18991, we would previously allocate heap in low memory.

Due to this the linker, which typically *needs* low memory, would end up

competing with the heap. In longer builds we end up running out of

low memory entirely, leading to linking failures.

(cherry picked from commit a1a75aa9be2c133dd1372a08eeb6a92c31688df7)

</pre>

</li>

<li>

<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/b160abf58c985ce06fdf74d6b61a1a7e3eee47a0">b160abf5</a></strong>

<div>

<span>by Ben Gamari</span>

<i>at 2020-12-07T15:16:23+00:00</i>

</div>

<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">rts/linker: Ensure that .rodata is aligned to 16 bytes

Pulled out of !4310.

(cherry picked from commit be408b86c9125dedd2f83e9701ea9f2e499c8dd4)

</pre>

</li>

<li>

<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/e7dbdbfadf897b246a0b7d669bb559d18030c3c6">e7dbdbfa</a></strong>

<div>

<span>by GHC GitLab CI</span>

<i>at 2020-12-07T15:19:45+00:00</i>

</div>

<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Bump text submodule to 1.2.4.1-rc1

Per request of @phadej.

</pre>

</li>

</ul>

<h4>14 changed files:</h4>

<ul>

<li class="file-stats">

<a href="#2d19e6cbace295d14f756857b7a73e885bca99f3">

libraries/text

</a>

</li>

<li class="file-stats">

<a href="#687f0b17315e54a1692de64626391e572ca298e9">

rts/LinkerInternals.h

</a>

</li>

<li class="file-stats">

<a href="#63bb2dcb45bf7982130b0b95ecf366bf1a617e82">

rts/Messages.c

</a>

</li>

<li class="file-stats">

<a href="#f639149fde351603cc3df9c8c4ba87744bcfc523">

rts/Messages.h

</a>

</li>

<li class="file-stats">

<a href="#6db965f97cbab901f493506a385bcf1283009921">

rts/PrimOps.cmm

</a>

</li>

<li class="file-stats">

<a href="#515f190a948b1d6c490c96f75a3f909580e927b0">

rts/RaiseAsync.c

</a>

</li>

<li class="file-stats">

<a href="#2ffbdc61d9d0e36978f07f62c00c08f33149e335">

rts/Updates.h

</a>

</li>

<li class="file-stats">

<a href="#4f7a8996954df0bb6d580c202be08ec03af67514">

rts/linker/SymbolExtras.c

</a>

</li>

<li class="file-stats">

<a href="#cc73d9e9eaa9bba27d82a52a4c9ad6e125643836">

rts/posix/OSThreads.c

</a>

</li>

<li class="file-stats">

<a href="#37a93df244a7789fddf557443b6398d06763e9cc">

rts/sm/Evac.c

</a>

</li>

<li class="file-stats">

<a href="#6477e10756faf038741e63d1ad499a1df809fe10">

rts/sm/GC.c

</a>

</li>

<li class="file-stats">

<a href="#b4a38dad10ba126e05a0b6adc99aa0c2eb742875">

rts/sm/NonMoving.c

</a>

</li>

<li class="file-stats">

<a href="#58096134fc46f90956354534c54f43e04f893269">

rts/sm/Sanity.c

</a>

</li>

<li class="file-stats">

<a href="#20d64c0bdc272817149d1d5cf20a73a8b5fd637f">

rts/win32/OSMem.c

</a>

</li>

</ul>

<h4>Changes:</h4>

<li id="2d19e6cbace295d14f756857b7a73e885bca99f3">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/391a3f6d3776a069534a91e34e5915a0c8d0391b...e7dbdbfadf897b246a0b7d669bb559d18030c3c6#2d19e6cbace295d14f756857b7a73e885bca99f3"><strong>libraries/text</strong></a>

<hr>

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

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

<td class="diff-line-num old old_line" data-linenumber="1" 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">

1

</td>

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

</td>

<td class="line_content old" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#fbe9eb">

<pre style="margin: 0;">-Subproject commit <span class="idiff left right">e07c14940c25f33fe5b282912d745d3a79dd4ade</span></pre>

</td>

</tr>

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

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

</td>

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

1

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

<pre style="margin: 0;">+Subproject commit <span class="idiff left right">be54b46175db603aafea3e3f19a6a75e87a29828</span></pre>

</td>

</tr>

</table>

<br>

</li>

<li id="687f0b17315e54a1692de64626391e572ca298e9">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/391a3f6d3776a069534a91e34e5915a0c8d0391b...e7dbdbfadf897b246a0b7d669bb559d18030c3c6#687f0b17315e54a1692de64626391e572ca298e9"><strong>rts/LinkerInternals.h</strong></a>

<hr>

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

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

<td class="diff-line-num unfold js-unfold old_line" data-linenumber="135" 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="135" 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">@@ -135,7 +135,7 @@ typedef struct _Segment {</td>

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<td class="diff-line-num old_line" data-linenumber="135" 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">

135

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<td class="diff-line-num new_line" data-linenumber="135" 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">

135

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

<pre style="margin: 0;"> <span id="LC135" class="line" lang="c">    <span class="kt" style="color: #458; font-weight: 600;">int</span> <span class="n" style="color: #333;">n_sections</span><span class="p">;</span></span>

</pre>

</td>

</tr>

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

<td class="diff-line-num old_line" data-linenumber="136" 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">

136

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<td class="diff-line-num new_line" data-linenumber="136" 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">

136

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

<pre style="margin: 0;"> <span id="LC136" class="line" lang="c"><span class="p">}</span> <span class="n" style="color: #333;">Segment</span><span class="p">;</span></span>

</pre>

</td>

</tr>

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

<td class="diff-line-num old_line" data-linenumber="137" 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">

137

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<td class="diff-line-num new_line" data-linenumber="137" 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">

137

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

<pre style="margin: 0;"> <span id="LC137" class="line" lang="c"></span>

</pre>

</td>

</tr>

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

<td class="diff-line-num old old_line" data-linenumber="138" 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">

138

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<td class="diff-line-num new_line old" data-linenumber="138" 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="line_content old" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#fbe9eb">

<pre style="margin: 0;">-<span id="LC138" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH)</span></span>

</pre>

</td>

</tr>

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

<td class="diff-line-num new old_line" data-linenumber="139" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="138" 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">

138

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

<pre style="margin: 0;">+<span id="LC138" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH)<span class="idiff left right"> || defined(aarch64_HOST_ARCH)</span></span></span>

</pre>

</td>

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<pre style="margin: 0;"> <span id="LC139" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#define NEED_SYMBOL_EXTRAS 1</span></span>

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<pre style="margin: 0;"> <span id="LC140" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#endif</span></span>

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<pre style="margin: 0;"> <span id="LC141" class="line" lang="c"></span>

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<li id="63bb2dcb45bf7982130b0b95ecf366bf1a617e82">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/391a3f6d3776a069534a91e34e5915a0c8d0391b...e7dbdbfadf897b246a0b7d669bb559d18030c3c6#63bb2dcb45bf7982130b0b95ecf366bf1a617e82"><strong>rts/Messages.c</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">@@ -100,7 +100,7 @@ loop:</td>

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<pre style="margin: 0;"> <span id="LC100" class="line" lang="c">        <span class="k" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">THROWTO_SUCCESS</span><span class="p">:</span> <span class="p">{</span></span>

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<pre style="margin: 0;"> <span id="LC101" class="line" lang="c">            <span class="c1" style="color: #998; font-style: italic;">// this message is done</span></span>

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<pre style="margin: 0;"> <span id="LC102" class="line" lang="c">            <span class="n" style="color: #333;">StgTSO</span> <span class="o" style="font-weight: 600;">*</span><span class="n" style="color: #333;">source</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">t</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">source</span><span class="p">;</span></span>

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<pre style="margin: 0;">-<span id="LC103" class="line" lang="c">            <span class="n" style="color: #333;">doneWithMsgThrowTo</span><span class="p">(</span><span class="n" style="color: #333;">t</span><span class="p">);</span></span>

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<pre style="margin: 0;">+<span id="LC103" class="line" lang="c">            <span class="n" style="color: #333;">doneWithMsgThrowTo</span><span class="p">(</span><span class="n" style="color: #333;"><span class="idiff left">cap</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff right"> </span><span class="n" style="color: #333;">t</span><span class="p">);</span></span>

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<pre style="margin: 0;"> <span id="LC104" class="line" lang="c">            <span class="n" style="color: #333;">tryWakeupThread</span><span class="p">(</span><span class="n" style="color: #333;">cap</span><span class="p">,</span> <span class="n" style="color: #333;">source</span><span class="p">);</span></span>

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<pre style="margin: 0;"> <span id="LC105" class="line" lang="c">            <span class="k" style="font-weight: 600;">break</span><span class="p">;</span></span>

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<pre style="margin: 0;"> <span id="LC106" class="line" lang="c">        <span class="p">}</span></span>

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<li id="f639149fde351603cc3df9c8c4ba87744bcfc523">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/391a3f6d3776a069534a91e34e5915a0c8d0391b...e7dbdbfadf897b246a0b7d669bb559d18030c3c6#f639149fde351603cc3df9c8c4ba87744bcfc523"><strong>rts/Messages.h</strong></a>

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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -23,8 +23,16 @@ void sendMessage    (Capability *from_cap, Capability *to_cap, Message *msg);</td>

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<pre style="margin: 0;"> <span id="LC23" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#include "SMPClosureOps.h"</span></span>

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

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<pre style="margin: 0;"> <span id="LC25" class="line" lang="c"><span class="n" style="color: #333;">INLINE_HEADER</span> <span class="kt" style="color: #458; font-weight: 600;">void</span></span>

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<pre style="margin: 0;">-<span id="LC26" class="line" lang="c"><span class="nf" style="color: #900; font-weight: 600;">doneWithMsgThrowTo</span> <span class="p">(</span><span class="n" style="color: #333;">MessageThrowTo</span> <span class="o" style="font-weight: 600;">*</span><span class="n" style="color: #333;">m</span><span class="p">)</span></span>

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<pre style="margin: 0;">+<span id="LC26" class="line" lang="c"><span class="nf" style="color: #900; font-weight: 600;">doneWithMsgThrowTo</span> <span class="p">(</span><span class="n" style="color: #333;"><span class="idiff left">Capability</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">*</span></span><span class="n" style="color: #333;"><span class="idiff">cap</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff right"> </span><span class="n" style="color: #333;">MessageThrowTo</span> <span class="o" style="font-weight: 600;">*</span><span class="n" style="color: #333;">m</span><span class="p">)</span></span>

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<pre style="margin: 0;"> <span id="LC27" class="line" lang="c"><span class="p">{</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="28" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="28" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC28" class="line" lang="c">    <span class="c1" style="color: #998; font-style: italic;">// The message better be locked</span></span>

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<td class="diff-line-num new old_line" data-linenumber="28" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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

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<pre style="margin: 0;">+<span id="LC29" class="line" lang="c">    <span class="n" style="color: #333;">ASSERT</span><span class="p">(</span><span class="n" style="color: #333;">m</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">header</span><span class="p">.</span><span class="n" style="color: #333;">info</span> <span class="o" style="font-weight: 600;">==</span> <span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;">stg_WHITEHOLE_info</span><span class="p">);</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="28" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_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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<pre style="margin: 0;">+<span id="LC30" class="line" lang="c">    <span class="n" style="color: #333;">IF_NONMOVING_WRITE_BARRIER_ENABLED</span> <span class="p">{</span></span>

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<td class="diff-line-num new old_line" data-linenumber="28" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="31" 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="LC31" class="line" lang="c">      <span class="n" style="color: #333;">updateRemembSetPushClosure</span><span class="p">(</span><span class="n" style="color: #333;">cap</span><span class="p">,</span> <span class="p">(</span><span class="n" style="color: #333;">StgClosure</span> <span class="o" style="font-weight: 600;">*</span><span class="p">)</span> <span class="n" style="color: #333;">m</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">link</span><span class="p">);</span></span>

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<td class="diff-line-num new old_line" data-linenumber="28" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="32" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC32" class="line" lang="c">      <span class="n" style="color: #333;">updateRemembSetPushClosure</span><span class="p">(</span><span class="n" style="color: #333;">cap</span><span class="p">,</span> <span class="p">(</span><span class="n" style="color: #333;">StgClosure</span> <span class="o" style="font-weight: 600;">*</span><span class="p">)</span> <span class="n" style="color: #333;">m</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">source</span><span class="p">);</span></span>

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<td class="diff-line-num new old_line" data-linenumber="28" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="33" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC33" class="line" lang="c">      <span class="n" style="color: #333;">updateRemembSetPushClosure</span><span class="p">(</span><span class="n" style="color: #333;">cap</span><span class="p">,</span> <span class="p">(</span><span class="n" style="color: #333;">StgClosure</span> <span class="o" style="font-weight: 600;">*</span><span class="p">)</span> <span class="n" style="color: #333;">m</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">target</span><span class="p">);</span></span>

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<td class="diff-line-num new old_line" data-linenumber="28" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC34" class="line" lang="c">      <span class="n" style="color: #333;">updateRemembSetPushClosure</span><span class="p">(</span><span class="n" style="color: #333;">cap</span><span class="p">,</span> <span class="p">(</span><span class="n" style="color: #333;">StgClosure</span> <span class="o" style="font-weight: 600;">*</span><span class="p">)</span> <span class="n" style="color: #333;">m</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">exception</span><span class="p">);</span></span>

</pre>

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

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<pre style="margin: 0;">+<span id="LC35" class="line" lang="c">    <span class="p">}</span></span>

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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">

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<pre style="margin: 0;"> <span id="LC36" class="line" lang="c">    <span class="n" style="color: #333;">OVERWRITING_CLOSURE</span><span class="p">((</span><span class="n" style="color: #333;">StgClosure</span><span class="o" style="font-weight: 600;">*</span><span class="p">)</span><span class="n" style="color: #333;">m</span><span class="p">);</span></span>

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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="LC37" class="line" lang="c">    <span class="n" style="color: #333;">unlockClosure</span><span class="p">((</span><span class="n" style="color: #333;">StgClosure</span><span class="o" style="font-weight: 600;">*</span><span class="p">)</span><span class="n" style="color: #333;">m</span><span class="p">,</span> <span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;">stg_MSG_NULL_info</span><span class="p">);</span></span>

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<pre style="margin: 0;"> <span id="LC38" class="line" lang="c">    <span class="n" style="color: #333;">LDV_RECORD_CREATE</span><span class="p">(</span><span class="n" style="color: #333;">m</span><span class="p">);</span></span>

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<br>

</li>

<li id="6db965f97cbab901f493506a385bcf1283009921">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/391a3f6d3776a069534a91e34e5915a0c8d0391b...e7dbdbfadf897b246a0b7d669bb559d18030c3c6#6db965f97cbab901f493506a385bcf1283009921"><strong>rts/PrimOps.cmm</strong></a>

<hr>

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

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="233" 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="233" 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">@@ -233,6 +233,22 @@ stg_shrinkSmallMutableArrayzh ( gcptr mba, W_ new_size )</td>

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<pre style="margin: 0;"> <span id="LC233" class="line" lang="ghc-cmm"></span>

</pre>

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<pre style="margin: 0;"> <span id="LC234" class="line" lang="ghc-cmm">   <span class="nf" style="color: #900; font-weight: 600;">OVERWRITING_CLOSURE_OFS</span><span class="p">(</span><span class="nl">mba</span><span class="p">,</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">BYTES_TO_WDS</span><span class="p">(</span><span class="nl">SIZEOF_StgSmallMutArrPtrs</span><span class="p">)</span> <span class="o" style="font-weight: 600;">+</span></span>

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<pre style="margin: 0;"> <span id="LC235" class="line" lang="ghc-cmm">                                 <span class="nl">new_size</span><span class="p">));</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC236" class="line" lang="ghc-cmm"></span>

</pre>

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<pre style="margin: 0;">+<span id="LC237" class="line" lang="ghc-cmm">   <span class="nf" style="color: #900; font-weight: 600;">IF_NONMOVING_WRITE_BARRIER_ENABLED</span> <span class="p">{</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC238" class="line" lang="ghc-cmm">     <span class="c1" style="color: #998; font-style: italic;">// Ensure that the elements we are about to shrink out of existence</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC239" class="line" lang="ghc-cmm">     <span class="c1" style="color: #998; font-style: italic;">// remain visible to the non-moving collector.</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC240" class="line" lang="ghc-cmm">     <span class="kt" style="color: #458; font-weight: 600;">W_</span> <span class="nl">p</span><span class="p">,</span> <span class="nl">end</span><span class="p">;</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC241" class="line" lang="ghc-cmm">     <span class="nl">p</span> <span class="o" style="font-weight: 600;">=</span> <span class="nl">mba</span> <span class="o" style="font-weight: 600;">+</span> <span class="nl">SIZEOF_StgSmallMutArrPtrs</span> <span class="o" style="font-weight: 600;">+</span> <span class="nf" style="color: #900; font-weight: 600;">WDS</span><span class="p">(</span><span class="nl">new_size</span><span class="p">);</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC242" class="line" lang="ghc-cmm">     <span class="nl">end</span> <span class="o" style="font-weight: 600;">=</span> <span class="nl">mba</span> <span class="o" style="font-weight: 600;">+</span> <span class="nl">SIZEOF_StgSmallMutArrPtrs</span> <span class="o" style="font-weight: 600;">+</span> <span class="nf" style="color: #900; font-weight: 600;">WDS</span><span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">StgSmallMutArrPtrs_ptrs</span><span class="p">(</span><span class="nl">mba</span><span class="p">));</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC243" class="line" lang="ghc-cmm"><span class="nl">again</span><span class="p">:</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="236" 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="244" 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="LC244" class="line" lang="ghc-cmm">     <span class="k" style="font-weight: 600;">ccall</span> <span class="nf" style="color: #900; font-weight: 600;">updateRemembSetPushClosure_</span><span class="p">(</span><span class="vg" style="color: #008080;">BaseReg</span> <span class="dl">"</span><span class="s" style="color: #d14;">ptr</span><span class="dl">"</span><span class="p">,</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="236" 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="245" 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="LC245" class="line" lang="ghc-cmm">                                       <span class="kt" style="color: #458; font-weight: 600;">W_</span><span class="p">[</span><span class="nl">p</span><span class="p">]</span> <span class="dl">"</span><span class="s" style="color: #d14;">ptr</span><span class="dl">"</span><span class="p">);</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="246" 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="LC246" class="line" lang="ghc-cmm">     <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span><span class="nl">p</span> <span class="o" style="font-weight: 600;"><</span> <span class="nl">end</span><span class="p">)</span> <span class="p">{</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="247" 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="LC247" class="line" lang="ghc-cmm">       <span class="nl">p</span> <span class="o" style="font-weight: 600;">=</span> <span class="nl">p</span> <span class="o" style="font-weight: 600;">+</span> <span class="nl">SIZEOF_W</span><span class="p">;</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="236" 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="248" 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="LC248" class="line" lang="ghc-cmm">       <span class="k" style="font-weight: 600;">goto</span> <span class="nl">again</span><span class="p">;</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC249" class="line" lang="ghc-cmm">     <span class="p">}</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC250" class="line" lang="ghc-cmm">   <span class="p">}</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="236" 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="LC251" class="line" lang="ghc-cmm"></span>

</pre>

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<pre style="margin: 0;"> <span id="LC252" class="line" lang="ghc-cmm">   <span class="nf" style="color: #900; font-weight: 600;">StgSmallMutArrPtrs_ptrs</span><span class="p">(</span><span class="nl">mba</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="nl">new_size</span><span class="p">;</span></span>

</pre>

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<td class="diff-line-num new_line" data-linenumber="253" 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="LC253" class="line" lang="ghc-cmm">   <span class="c1" style="color: #998; font-style: italic;">// See the comments in overwritingClosureOfs for an explanation</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="238" 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="LC254" class="line" lang="ghc-cmm">   <span class="c1" style="color: #998; font-style: italic;">// of the interaction with LDV profiling.</span></span>

</pre>

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<br>

</li>

<li id="515f190a948b1d6c490c96f75a3f909580e927b0">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/391a3f6d3776a069534a91e34e5915a0c8d0391b...e7dbdbfadf897b246a0b7d669bb559d18030c3c6#515f190a948b1d6c490c96f75a3f909580e927b0"><strong>rts/RaiseAsync.c</strong></a>

<hr>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="336" 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="336" 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">@@ -336,7 +336,7 @@ check_target:</td>

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<td class="diff-line-num old_line" data-linenumber="336" 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">

336

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<td class="diff-line-num new_line" data-linenumber="336" 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">

336

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<pre style="margin: 0;"> <span id="LC336" class="line" lang="c">        <span class="p">}</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="337" 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">

337

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<td class="diff-line-num new_line" data-linenumber="337" 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">

337

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<pre style="margin: 0;"> <span id="LC337" class="line" lang="c"></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="338" 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">

338

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<td class="diff-line-num new_line" data-linenumber="338" 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">

338

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<pre style="margin: 0;"> <span id="LC338" class="line" lang="c">        <span class="c1" style="color: #998; font-style: italic;">// nobody else can wake up this TSO after we claim the message</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="339" 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">

339

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<td class="diff-line-num new_line old" data-linenumber="339" 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="LC339" class="line" lang="c">        <span class="n" style="color: #333;">doneWithMsgThrowTo</span><span class="p">(</span><span class="n" style="color: #333;">m</span><span class="p">);</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="340" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="339" 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="LC339" class="line" lang="c">        <span class="n" style="color: #333;">doneWithMsgThrowTo</span><span class="p">(</span><span class="n" style="color: #333;"><span class="idiff left">cap</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff right"> </span><span class="n" style="color: #333;">m</span><span class="p">);</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="340" 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">

340

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<td class="diff-line-num new_line" data-linenumber="340" 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">

340

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

</pre>

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<td class="diff-line-num old_line" data-linenumber="341" 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">

341

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<td class="diff-line-num new_line" data-linenumber="341" 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">

341

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<pre style="margin: 0;"> <span id="LC341" class="line" lang="c">        <span class="n" style="color: #333;">raiseAsync</span><span class="p">(</span><span class="n" style="color: #333;">cap</span><span class="p">,</span> <span class="n" style="color: #333;">target</span><span class="p">,</span> <span class="n" style="color: #333;">msg</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">exception</span><span class="p">,</span> <span class="nb" style="color: #0086b3;">false</span><span class="p">,</span> <span class="nb" style="color: #0086b3;">NULL</span><span class="p">);</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="342" 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">

342

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<td class="diff-line-num new_line" data-linenumber="342" 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">

342

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<pre style="margin: 0;"> <span id="LC342" class="line" lang="c">        <span class="k" style="font-weight: 600;">return</span> <span class="n" style="color: #333;">THROWTO_SUCCESS</span><span class="p">;</span></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="577" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="577" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -577,7 +577,7 @@ maybePerformBlockedException (Capability *cap, StgTSO *tso)</td>

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<td class="diff-line-num old_line" data-linenumber="577" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

577

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<td class="diff-line-num new_line" data-linenumber="577" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

577

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

</pre>

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<td class="diff-line-num old_line" data-linenumber="578" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

578

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<td class="diff-line-num new_line" data-linenumber="578" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

578

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<pre style="margin: 0;"> <span id="LC578" class="line" lang="c">        <span class="n" style="color: #333;">throwToSingleThreaded</span><span class="p">(</span><span class="n" style="color: #333;">cap</span><span class="p">,</span> <span class="n" style="color: #333;">msg</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">target</span><span class="p">,</span> <span class="n" style="color: #333;">msg</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">exception</span><span class="p">);</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="579" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

579

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<td class="diff-line-num new_line" data-linenumber="579" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

579

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<pre style="margin: 0;"> <span id="LC579" class="line" lang="c">        <span class="n" style="color: #333;">source</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">msg</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">source</span><span class="p">;</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="580" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

580

</td>

<td class="diff-line-num new_line old" data-linenumber="580" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC580" class="line" lang="c">        <span class="n" style="color: #333;">doneWithMsgThrowTo</span><span class="p">(</span><span class="n" style="color: #333;">msg</span><span class="p">);</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="581" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="580" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

580

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<pre style="margin: 0;">+<span id="LC580" class="line" lang="c">        <span class="n" style="color: #333;">doneWithMsgThrowTo</span><span class="p">(</span><span class="n" style="color: #333;"><span class="idiff left">cap</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff right"> </span><span class="n" style="color: #333;">msg</span><span class="p">);</span></span>

</pre>

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

581

</td>

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

581

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<pre style="margin: 0;"> <span id="LC581" class="line" lang="c">        <span class="n" style="color: #333;">tryWakeupThread</span><span class="p">(</span><span class="n" style="color: #333;">cap</span><span class="p">,</span> <span class="n" style="color: #333;">source</span><span class="p">);</span></span>

</pre>

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

582

</td>

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

582

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<pre style="margin: 0;"> <span id="LC582" class="line" lang="c">        <span class="k" style="font-weight: 600;">return</span> <span class="mi" style="color: #099;">1</span><span class="p">;</span></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="583" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

583

</td>

<td class="diff-line-num new_line" data-linenumber="583" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

583

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

<pre style="margin: 0;"> <span id="LC583" class="line" lang="c">    <span class="p">}</span></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="599" 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="599" 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">@@ -599,7 +599,7 @@ awakenBlockedExceptionQueue (Capability *cap, StgTSO *tso)</td>

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

599

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<pre style="margin: 0;"> <span id="LC599" class="line" lang="c">        <span class="n" style="color: #333;">i</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">lockClosure</span><span class="p">((</span><span class="n" style="color: #333;">StgClosure</span> <span class="o" style="font-weight: 600;">*</span><span class="p">)</span><span class="n" style="color: #333;">msg</span><span class="p">);</span></span>

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600

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<pre style="margin: 0;"> <span id="LC600" class="line" lang="c">        <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span><span class="n" style="color: #333;">i</span> <span class="o" style="font-weight: 600;">!=</span> <span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;">stg_MSG_NULL_info</span><span class="p">)</span> <span class="p">{</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC601" class="line" lang="c">            <span class="n" style="color: #333;">source</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">msg</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">source</span><span class="p">;</span></span>

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<td class="diff-line-num new_line old" data-linenumber="602" 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="LC602" class="line" lang="c">            <span class="n" style="color: #333;">doneWithMsgThrowTo</span><span class="p">(</span><span class="n" style="color: #333;">msg</span><span class="p">);</span></span>

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<pre style="margin: 0;">+<span id="LC602" class="line" lang="c">            <span class="n" style="color: #333;">doneWithMsgThrowTo</span><span class="p">(</span><span class="n" style="color: #333;"><span class="idiff left">cap</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff right"> </span><span class="n" style="color: #333;">msg</span><span class="p">);</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC603" class="line" lang="c">            <span class="n" style="color: #333;">tryWakeupThread</span><span class="p">(</span><span class="n" style="color: #333;">cap</span><span class="p">,</span> <span class="n" style="color: #333;">source</span><span class="p">);</span></span>

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<pre style="margin: 0;"> <span id="LC604" class="line" lang="c">        <span class="p">}</span> <span class="k" style="font-weight: 600;">else</span> <span class="p">{</span></span>

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<pre style="margin: 0;"> <span id="LC605" class="line" lang="c">            <span class="n" style="color: #333;">unlockClosure</span><span class="p">((</span><span class="n" style="color: #333;">StgClosure</span> <span class="o" style="font-weight: 600;">*</span><span class="p">)</span><span class="n" style="color: #333;">msg</span><span class="p">,</span><span class="n" style="color: #333;">i</span><span class="p">);</span></span>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="696" 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="696" 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">@@ -696,7 +696,7 @@ removeFromQueues(Capability *cap, StgTSO *tso)</td>

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<pre style="margin: 0;"> <span id="LC696" class="line" lang="c">      <span class="c1" style="color: #998; font-style: italic;">// ASSERT(m->header.info == &stg_WHITEHOLE_info);</span></span>

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

</pre>

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<pre style="margin: 0;"> <span id="LC698" class="line" lang="c">      <span class="c1" style="color: #998; font-style: italic;">// unlock and revoke it at the same time</span></span>

</pre>

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<pre style="margin: 0;">-<span id="LC699" class="line" lang="c">      <span class="n" style="color: #333;">doneWithMsgThrowTo</span><span class="p">(</span><span class="n" style="color: #333;">m</span><span class="p">);</span></span>

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<pre style="margin: 0;">+<span id="LC699" class="line" lang="c">      <span class="n" style="color: #333;">doneWithMsgThrowTo</span><span class="p">(</span><span class="n" style="color: #333;"><span class="idiff left">cap</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff right"> </span><span class="n" style="color: #333;">m</span><span class="p">);</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC700" class="line" lang="c">      <span class="k" style="font-weight: 600;">break</span><span class="p">;</span></span>

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<td class="diff-line-num old_line" data-linenumber="701" 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="LC701" class="line" lang="c">  <span class="p">}</span></span>

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<td class="diff-line-num old_line" data-linenumber="702" 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">

702

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702

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<pre style="margin: 0;"> <span id="LC702" class="line" lang="c"></span>

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<br>

</li>

<li id="2ffbdc61d9d0e36978f07f62c00c08f33149e335">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/391a3f6d3776a069534a91e34e5915a0c8d0391b...e7dbdbfadf897b246a0b7d669bb559d18030c3c6#2ffbdc61d9d0e36978f07f62c00c08f33149e335"><strong>rts/Updates.h</strong></a>

<hr>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="49" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="49" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -49,7 +49,6 @@</td>

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49

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49

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<pre style="margin: 0;"> <span id="LC49" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">    W_ bd;                                                      \</span></span>

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<pre style="margin: 0;"> <span id="LC50" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">                                                                \</span></span>

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<pre style="margin: 0;"> <span id="LC51" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">    prim_write_barrier;                                         \</span></span>

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<pre style="margin: 0;">-<span id="LC52" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">    OVERWRITING_CLOSURE(p1);                                    \</span></span>

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<pre style="margin: 0;"> <span id="LC52" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">    bd = Bdescr(p1);                                            \</span></span>

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<pre style="margin: 0;"> <span id="LC53" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">    if (bdescr_gen_no(bd) != 0 :: bits16) {                     \</span></span>

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<pre style="margin: 0;"> <span id="LC54" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">      IF_NONMOVING_WRITE_BARRIER_ENABLED {                      \</span></span>

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<pre style="margin: 0;"> <span id="LC59" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">    } else {                                                    \</span></span>

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<pre style="margin: 0;"> <span id="LC60" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">      TICK_UPD_NEW_IND();                                       \</span></span>

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<pre style="margin: 0;"> <span id="LC61" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">    }                                                           \</span></span>

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<pre style="margin: 0;">+<span id="LC62" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">    OVERWRITING_CLOSURE(p1);                                    \</span></span>

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<pre style="margin: 0;"> <span id="LC63" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">    StgInd_indirectee(p1) = p2;                                 \</span></span>

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<pre style="margin: 0;"> <span id="LC64" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">    prim_write_barrier;                                         \</span></span>

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<pre style="margin: 0;"> <span id="LC65" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">    SET_INFO(p1, stg_BLACKHOLE_info);                           \</span></span>

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<br>

</li>

<li id="4f7a8996954df0bb6d580c202be08ec03af67514">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/391a3f6d3776a069534a91e34e5915a0c8d0391b...e7dbdbfadf897b246a0b7d669bb559d18030c3c6#4f7a8996954df0bb6d580c202be08ec03af67514"><strong>rts/linker/SymbolExtras.c</strong></a>

<hr>

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<td class="diff-line-num unfold js-unfold new_line" data-linenumber="77" 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">@@ -77,7 +77,9 @@ int ocAllocateExtras(ObjectCode* oc, int count, int first, int bssSize)</td>

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<pre style="margin: 0;"> <span id="LC77" class="line" lang="c">      <span class="cm" style="color: #998; font-style: italic;">/* N.B. We currently can't mark symbol extras as non-executable in this</span></span>

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<pre style="margin: 0;"> <span id="LC78" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;">       * case. */</span></span>

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<pre style="margin: 0;"> <span id="LC79" class="line" lang="c">      <span class="kt" style="color: #458; font-weight: 600;">size_t</span> <span class="n" style="color: #333;">n</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">roundUpToPage</span><span class="p">(</span><span class="n" style="color: #333;">oc</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">fileSize</span><span class="p">);</span></span>

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<pre style="margin: 0;">-<span id="LC80" class="line" lang="c">      <span class="n" style="color: #333;">bssSize</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">roundUpToAlign</span><span class="p">(</span><span class="n" style="color: #333;">bssSize</span><span class="p">,</span> <span class="mi" style="color: #099;">8</span><span class="p">);</span></span>

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<pre style="margin: 0;">+<span id="LC80" class="line" lang="c">      <span class="c1" style="color: #998; font-style: italic;">// round bssSize up to the nearest page size since we need to ensure that</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="81" 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="81" 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">

81

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<pre style="margin: 0;">+<span id="LC81" class="line" lang="c">      <span class="c1" style="color: #998; font-style: italic;">// symbol_extras is aligned to a page boundary so it can be mprotect'd.</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="81" 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="82" 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">

82

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<pre style="margin: 0;">+<span id="LC82" class="line" lang="c">      <span class="n" style="color: #333;">bssSize</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">roundUpToPage</span><span class="p">(</span><span class="n" style="color: #333;">bssSize</span><span class="p">);</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="81" 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">

81

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<td class="diff-line-num new_line" data-linenumber="83" 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">

83

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<pre style="margin: 0;"> <span id="LC83" class="line" lang="c">      <span class="kt" style="color: #458; font-weight: 600;">size_t</span> <span class="n" style="color: #333;">allocated_size</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">n</span> <span class="o" style="font-weight: 600;">+</span> <span class="n" style="color: #333;">bssSize</span> <span class="o" style="font-weight: 600;">+</span> <span class="n" style="color: #333;">extras_size</span><span class="p">;</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="82" 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">

82

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<td class="diff-line-num new_line" data-linenumber="84" 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="LC84" class="line" lang="c">      <span class="kt" style="color: #458; font-weight: 600;">void</span> <span class="o" style="font-weight: 600;">*</span><span class="n" style="color: #333;">new</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mmapForLinker</span><span class="p">(</span><span class="n" style="color: #333;">allocated_size</span><span class="p">,</span> <span class="n" style="color: #333;">PROT_READ</span> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">PROT_WRITE</span><span class="p">,</span> <span class="n" style="color: #333;">MAP_ANONYMOUS</span><span class="p">,</span> <span class="o" style="font-weight: 600;">-</span><span class="mi" style="color: #099;">1</span><span class="p">,</span> <span class="mi" style="color: #099;">0</span><span class="p">);</span></span>

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<td class="diff-line-num old_line" data-linenumber="83" 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="85" 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="LC85" class="line" lang="c">      <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span><span class="n" style="color: #333;">new</span><span class="p">)</span> <span class="p">{</span></span>

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<li id="cc73d9e9eaa9bba27d82a52a4c9ad6e125643836">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/391a3f6d3776a069534a91e34e5915a0c8d0391b...e7dbdbfadf897b246a0b7d669bb559d18030c3c6#cc73d9e9eaa9bba27d82a52a4c9ad6e125643836"><strong>rts/posix/OSThreads.c</strong></a>

<hr>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="380" 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="380" 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">@@ -380,8 +380,9 @@ interruptOSThread (OSThreadId id)</td>

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380

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<pre style="margin: 0;"> <span id="LC380" class="line" lang="c"><span class="kt" style="color: #458; font-weight: 600;">void</span></span>

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<pre style="margin: 0;"> <span id="LC381" class="line" lang="c"><span class="nf" style="color: #900; font-weight: 600;">joinOSThread</span> <span class="p">(</span><span class="n" style="color: #333;">OSThreadId</span> <span class="n" style="color: #333;">id</span><span class="p">)</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC382" class="line" lang="c"><span class="p">{</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="383" 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="383" 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="LC383" class="line" lang="c">    <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span><span class="n" style="color: #333;">pthread_join</span><span class="p">(</span><span class="n" style="color: #333;">id</span><span class="p">,</span> <span class="nb" style="color: #0086b3;">NULL</span><span class="p">)</span> <span class="o" style="font-weight: 600;">!=</span> <span class="mi" style="color: #099;">0</span><span class="p">)</span> <span class="p">{</span></span>

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<td class="diff-line-num old old_line" data-linenumber="384" 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="383" 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="LC384" class="line" lang="c">        <span class="n" style="color: #333;">sysErrorBelch</span><span class="p">(</span><span class="s" style="color: #d14;">"joinOSThread: error %d"</span><span class="p">,</span> <span class="n" style="color: #333;">errno</span><span class="p">);</span></span>

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<td class="diff-line-num new old_line" data-linenumber="385" 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="383" 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="LC383" class="line" lang="c">    <span class="kt" style="color: #458; font-weight: 600;">int</span> <span class="n" style="color: #333;">ret</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">pthread_join</span><span class="p">(</span><span class="n" style="color: #333;">id</span><span class="p">,</span> <span class="nb" style="color: #0086b3;">NULL</span><span class="p">);</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="385" 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="384" 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="LC384" class="line" lang="c">    <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span><span class="n" style="color: #333;">ret</span> <span class="o" style="font-weight: 600;">!=</span> <span class="mi" style="color: #099;">0</span><span class="p">)</span> <span class="p">{</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="385" 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="385" 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="LC385" class="line" lang="c">        <span class="n" style="color: #333;">sysErrorBelch</span><span class="p">(</span><span class="s" style="color: #d14;">"joinOSThread: error %d"</span><span class="p">,</span> <span class="n" style="color: #333;">ret</span><span class="p">);</span></span>

</pre>

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<td class="diff-line-num new_line" data-linenumber="386" 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="LC386" class="line" lang="c">    <span class="p">}</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="386" 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="387" 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="LC387" class="line" lang="c"><span class="p">}</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="387" 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="388" 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="LC388" class="line" lang="c"></span>

</pre>

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</li>

<li id="37a93df244a7789fddf557443b6398d06763e9cc">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/391a3f6d3776a069534a91e34e5915a0c8d0391b...e7dbdbfadf897b246a0b7d669bb559d18030c3c6#37a93df244a7789fddf557443b6398d06763e9cc"><strong>rts/sm/Evac.c</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">@@ -109,6 +109,8 @@ alloc_for_copy (uint32_t size, uint32_t gen_no)</td>

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<pre style="margin: 0;"> <span id="LC109" class="line" lang="c">            <span class="c1" style="color: #998; font-style: italic;">//</span></span>

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<pre style="margin: 0;"> <span id="LC110" class="line" lang="c">            <span class="c1" style="color: #998; font-style: italic;">// However, if we are in a deadlock detection GC then we disable aging</span></span>

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<pre style="margin: 0;"> <span id="LC111" class="line" lang="c">            <span class="c1" style="color: #998; font-style: italic;">// so there is no need.</span></span>

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<pre style="margin: 0;">+<span id="LC112" class="line" lang="c">            <span class="c1" style="color: #998; font-style: italic;">//</span></span>

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<pre style="margin: 0;">+<span id="LC113" class="line" lang="c">            <span class="c1" style="color: #998; font-style: italic;">// See Note [Non-moving GC: Marking evacuated objects].</span></span>

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<pre style="margin: 0;"> <span id="LC114" class="line" lang="c">            <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span><span class="n" style="color: #333;">major_gc</span> <span class="o" style="font-weight: 600;">&&</span> <span class="o" style="font-weight: 600;">!</span><span class="n" style="color: #333;">deadlock_detect_gc</span><span class="p">)</span></span>

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<pre style="margin: 0;"> <span id="LC115" class="line" lang="c">                <span class="n" style="color: #333;">markQueuePushClosureGC</span><span class="p">(</span><span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;">gct</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">cap</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">upd_rem_set</span><span class="p">.</span><span class="n" style="color: #333;">queue</span><span class="p">,</span> <span class="p">(</span><span class="n" style="color: #333;">StgClosure</span> <span class="o" style="font-weight: 600;">*</span><span class="p">)</span> <span class="n" style="color: #333;">to</span><span class="p">);</span></span>

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<pre style="margin: 0;"> <span id="LC116" class="line" lang="c">            <span class="k" style="font-weight: 600;">return</span> <span class="n" style="color: #333;">to</span><span class="p">;</span></span>

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<td class="diff-line-num unfold js-unfold new_line" data-linenumber="136" 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">@@ -134,7 +136,58 @@ alloc_for_copy (uint32_t size, uint32_t gen_no)</td>

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<pre style="margin: 0;"> <span id="LC136" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;">   The evacuate() code</span></span>

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<pre style="margin: 0;"> <span id="LC137" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;">   -------------------------------------------------------------------------- */</span></span>

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<pre style="margin: 0;"> <span id="LC138" class="line" lang="c"></span>

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<pre style="margin: 0;">-<span id="LC137" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;">/* size is in words */</span></span>

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<pre style="margin: 0;">+<span id="LC139" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;">/*</span></span>

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<pre style="margin: 0;">+<span id="LC140" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * Note [Non-moving GC: Marking evacuated objects]</span></span>

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<pre style="margin: 0;">+<span id="LC141" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~</span></span>

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<pre style="margin: 0;">+<span id="LC142" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *</span></span>

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<pre style="margin: 0;">+<span id="LC143" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * When the non-moving collector is in use we must be careful to ensure that any</span></span>

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<td class="diff-line-num new new_line" data-linenumber="144" 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">

144

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<pre style="margin: 0;">+<span id="LC144" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * references to objects in the non-moving generation from younger generations</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="145" 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">

145

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<pre style="margin: 0;">+<span id="LC145" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * are pushed to the mark queue.</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="138" 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="146" 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">

146

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<pre style="margin: 0;">+<span id="LC146" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="138" 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="147" 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">

147

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<pre style="margin: 0;">+<span id="LC147" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * In particular we need to ensure that we handle newly-promoted objects are</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="148" 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">

148

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<pre style="margin: 0;">+<span id="LC148" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * correctly marked. For instance, consider this case:</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="149" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

149

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<pre style="margin: 0;">+<span id="LC149" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="138" 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="150" 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">

150

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<pre style="margin: 0;">+<span id="LC150" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *     generation 0                          generation 1</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="151" 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">

151

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<pre style="margin: 0;">+<span id="LC151" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *    ──────────────                        ──────────────</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="152" 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">

152

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<pre style="margin: 0;">+<span id="LC152" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="138" 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="153" 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="LC153" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *                                            ┌───────┐</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="138" 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="154" 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">

154

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<pre style="margin: 0;">+<span id="LC154" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *      ┌───────┐                             │   A   │</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="138" 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="155" 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">

155

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<pre style="margin: 0;">+<span id="LC155" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *      │   B   │ ◁────────────────────────── │       │</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="156" 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">

156

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<pre style="margin: 0;">+<span id="LC156" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *      │       │ ──┬─────────────────┐       └───────┘</span></span>

</pre>

</td>

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<td class="diff-line-num new new_line" data-linenumber="157" 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">

157

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<pre style="margin: 0;">+<span id="LC157" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *      └───────┘   ┆        after GC │</span></span>

</pre>

</td>

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<td class="diff-line-num new new_line" data-linenumber="158" 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">

158

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<pre style="margin: 0;">+<span id="LC158" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *                  ┆                 │</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="138" 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="159" 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="LC159" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *      ┌───────┐   ┆ before GC       │       ┌───────┐</span></span>

</pre>

</td>

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<td class="diff-line-num new new_line" data-linenumber="160" 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">

160

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<pre style="margin: 0;">+<span id="LC160" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *      │   C   │ ◁┄┘                 └─────▷ │   C'  │</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="161" 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">

161

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<pre style="margin: 0;">+<span id="LC161" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *      │       │                             │       │</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="162" 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="LC162" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *      └───────┘                             └───────┘</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="163" 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="LC163" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="164" 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="LC164" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *</span></span>

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<td class="diff-line-num new new_line" data-linenumber="165" 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">

165

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<pre style="margin: 0;">+<span id="LC165" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * In this case object C started off in generation 0 and was evacuated into</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="166" 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">

166

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<pre style="margin: 0;">+<span id="LC166" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * generation 1 during the preparatory GC. However, the only reference to C'</span></span>

</pre>

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167

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<pre style="margin: 0;">+<span id="LC167" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * is from B, which lives in the generation 0 (via aging); this reference will</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="168" 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">

168

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<pre style="margin: 0;">+<span id="LC168" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * not be visible to the concurrent non-moving collector (which can only</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="169" 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">

169

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<pre style="margin: 0;">+<span id="LC169" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * traverse the generation 1 heap). Consequently, upon evacuating C we need to</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="170" 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">

170

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<pre style="margin: 0;">+<span id="LC170" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * ensure that C' is added to the update remembered set as we know that it will</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="171" 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">

171

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<pre style="margin: 0;">+<span id="LC171" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * continue to be reachable via B (which is assumed to be reachable as it lives</span></span>

</pre>

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172

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<pre style="margin: 0;">+<span id="LC172" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * in a younger generation).</span></span>

</pre>

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173

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<pre style="margin: 0;">+<span id="LC173" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *</span></span>

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<pre style="margin: 0;">+<span id="LC174" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * Where this happens depends upon the type of the object (e.g. C'):</span></span>

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<td class="diff-line-num new new_line" data-linenumber="175" 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">

175

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<pre style="margin: 0;">+<span id="LC175" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="176" 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="LC176" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *  - In the case of "normal" small heap-allocated objects this happens in</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="177" 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="LC177" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *    alloc_for_copy.</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="178" 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="LC178" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *  - In the case of compact region this happens in evacuate_compact.</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="179" 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">

179

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<pre style="margin: 0;">+<span id="LC179" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *  - In the case of large objects this happens in evacuate_large.</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="180" 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="LC180" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="181" 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="LC181" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * See also Note [Aging under the non-moving collector] in NonMoving.c.</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="182" 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="LC182" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC183" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> */</span></span>

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<pre style="margin: 0;">+<span id="LC184" class="line" lang="c"></span>

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<td class="diff-line-num new new_line" data-linenumber="185" 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="LC185" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;">/* size is in words</span></span>

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<pre style="margin: 0;">+<span id="LC186" class="line" lang="c"></span>

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<pre style="margin: 0;">+<span id="LC187" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;">   We want to *always* inline this as often the size of the closure is static,</span></span>

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<pre style="margin: 0;">+<span id="LC188" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;">   which allows unrolling of the copy loop.</span></span>

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<pre style="margin: 0;">+<span id="LC189" class="line" lang="c"></span>

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<pre style="margin: 0;">+<span id="LC190" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> */</span></span>

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<pre style="margin: 0;"> <span id="LC191" class="line" lang="c"><span class="n" style="color: #333;">STATIC_INLINE</span> <span class="n" style="color: #333;">GNUC_ATTR_HOT</span> <span class="kt" style="color: #458; font-weight: 600;">void</span></span>

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<pre style="margin: 0;"> <span id="LC192" class="line" lang="c"><span class="nf" style="color: #900; font-weight: 600;">copy_tag</span><span class="p">(</span><span class="n" style="color: #333;">StgClosure</span> <span class="o" style="font-weight: 600;">**</span><span class="n" style="color: #333;">p</span><span class="p">,</span> <span class="k" style="font-weight: 600;">const</span> <span class="n" style="color: #333;">StgInfoTable</span> <span class="o" style="font-weight: 600;">*</span><span class="n" style="color: #333;">info</span><span class="p">,</span></span>

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<pre style="margin: 0;"> <span id="LC193" class="line" lang="c">         <span class="n" style="color: #333;">StgClosure</span> <span class="o" style="font-weight: 600;">*</span><span class="n" style="color: #333;">src</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">uint32_t</span> <span class="n" style="color: #333;">size</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">uint32_t</span> <span class="n" style="color: #333;">gen_no</span><span class="p">,</span> <span class="n" style="color: #333;">StgWord</span> <span class="n" style="color: #333;">tag</span><span class="p">)</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">@@ -351,6 +404,9 @@ evacuate_large(StgPtr p)</td>

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<pre style="margin: 0;"> <span id="LC404" class="line" lang="c">  <span class="n" style="color: #333;">__atomic_fetch_or</span><span class="p">(</span><span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;">bd</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">flags</span><span class="p">,</span> <span class="n" style="color: #333;">BF_EVACUATED</span><span class="p">,</span> <span class="n" style="color: #333;">__ATOMIC_ACQ_REL</span><span class="p">);</span></span>

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<pre style="margin: 0;"> <span id="LC405" class="line" lang="c">  <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span><span class="n" style="color: #333;">RTS_UNLIKELY</span><span class="p">(</span><span class="n" style="color: #333;">RtsFlags</span><span class="p">.</span><span class="n" style="color: #333;">GcFlags</span><span class="p">.</span><span class="n" style="color: #333;">useNonmoving</span> <span class="o" style="font-weight: 600;">&&</span> <span class="n" style="color: #333;">new_gen</span> <span class="o" style="font-weight: 600;">==</span> <span class="n" style="color: #333;">oldest_gen</span><span class="p">))</span> <span class="p">{</span></span>

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<pre style="margin: 0;"> <span id="LC406" class="line" lang="c">      <span class="n" style="color: #333;">__atomic_fetch_or</span><span class="p">(</span><span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;">bd</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">flags</span><span class="p">,</span> <span class="n" style="color: #333;">BF_NONMOVING</span><span class="p">,</span> <span class="n" style="color: #333;">__ATOMIC_ACQ_REL</span><span class="p">);</span></span>

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<pre style="margin: 0;">+<span id="LC407" class="line" lang="c"></span>

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<pre style="margin: 0;">+<span id="LC408" class="line" lang="c">      <span class="c1" style="color: #998; font-style: italic;">// See Note [Non-moving GC: Marking evacuated objects].</span></span>

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<pre style="margin: 0;">+<span id="LC409" class="line" lang="c">      <span class="n" style="color: #333;">markQueuePushClosureGC</span><span class="p">(</span><span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;">gct</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">cap</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">upd_rem_set</span><span class="p">.</span><span class="n" style="color: #333;">queue</span><span class="p">,</span> <span class="p">(</span><span class="n" style="color: #333;">StgClosure</span> <span class="o" style="font-weight: 600;">*</span><span class="p">)</span> <span class="n" style="color: #333;">p</span><span class="p">);</span></span>

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410

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<pre style="margin: 0;"> <span id="LC410" class="line" lang="c">  <span class="p">}</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="355" 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">

355

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<td class="diff-line-num new_line" data-linenumber="411" 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">

411

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<pre style="margin: 0;"> <span id="LC411" class="line" lang="c">  <span class="n" style="color: #333;">initBdescr</span><span class="p">(</span><span class="n" style="color: #333;">bd</span><span class="p">,</span> <span class="n" style="color: #333;">new_gen</span><span class="p">,</span> <span class="n" style="color: #333;">new_gen</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">to</span><span class="p">);</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="356" 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">

356

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<td class="diff-line-num new_line" data-linenumber="412" 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">

412

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<pre style="margin: 0;"> <span id="LC412" class="line" lang="c"></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="505" 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="561" 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">@@ -505,6 +561,9 @@ evacuate_compact (StgPtr p)</td>

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<td class="diff-line-num old_line" data-linenumber="505" 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">

505

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

561

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<pre style="margin: 0;"> <span id="LC561" class="line" lang="c">    <span class="n" style="color: #333;">bd</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">flags</span> <span class="o" style="font-weight: 600;">|=</span> <span class="n" style="color: #333;">BF_EVACUATED</span><span class="p">;</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="506" 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">

506

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<td class="diff-line-num new_line" data-linenumber="562" 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">

562

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<pre style="margin: 0;"> <span id="LC562" class="line" lang="c">    <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span><span class="n" style="color: #333;">RTS_UNLIKELY</span><span class="p">(</span><span class="n" style="color: #333;">RtsFlags</span><span class="p">.</span><span class="n" style="color: #333;">GcFlags</span><span class="p">.</span><span class="n" style="color: #333;">useNonmoving</span> <span class="o" style="font-weight: 600;">&&</span> <span class="n" style="color: #333;">new_gen</span> <span class="o" style="font-weight: 600;">==</span> <span class="n" style="color: #333;">oldest_gen</span><span class="p">))</span> <span class="p">{</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="507" 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">

507

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<td class="diff-line-num new_line" data-linenumber="563" 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">

563

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<pre style="margin: 0;"> <span id="LC563" class="line" lang="c">      <span class="n" style="color: #333;">__atomic_fetch_or</span><span class="p">(</span><span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;">bd</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">flags</span><span class="p">,</span> <span class="n" style="color: #333;">BF_NONMOVING</span><span class="p">,</span> <span class="n" style="color: #333;">__ATOMIC_RELAXED</span><span class="p">);</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="508" 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="564" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

564

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<pre style="margin: 0;">+<span id="LC564" class="line" lang="c"></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="508" 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="565" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

565

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<pre style="margin: 0;">+<span id="LC565" class="line" lang="c">      <span class="c1" style="color: #998; font-style: italic;">// See Note [Non-moving GC: Marking evacuated objects].</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="508" 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="566" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

566

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<pre style="margin: 0;">+<span id="LC566" class="line" lang="c">      <span class="n" style="color: #333;">markQueuePushClosureGC</span><span class="p">(</span><span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;">gct</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">cap</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">upd_rem_set</span><span class="p">.</span><span class="n" style="color: #333;">queue</span><span class="p">,</span> <span class="p">(</span><span class="n" style="color: #333;">StgClosure</span> <span class="o" style="font-weight: 600;">*</span><span class="p">)</span> <span class="n" style="color: #333;">str</span><span class="p">);</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="508" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

508

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<td class="diff-line-num new_line" data-linenumber="567" 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">

567

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<pre style="margin: 0;"> <span id="LC567" class="line" lang="c">    <span class="p">}</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="509" 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">

509

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<td class="diff-line-num new_line" data-linenumber="568" 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">

568

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<pre style="margin: 0;"> <span id="LC568" class="line" lang="c">    <span class="n" style="color: #333;">initBdescr</span><span class="p">(</span><span class="n" style="color: #333;">bd</span><span class="p">,</span> <span class="n" style="color: #333;">new_gen</span><span class="p">,</span> <span class="n" style="color: #333;">new_gen</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">to</span><span class="p">);</span></span>

</pre>

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

510

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<td class="diff-line-num new_line" data-linenumber="569" 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">

569

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

<pre style="margin: 0;"> <span id="LC569" class="line" lang="c"></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="690" 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="749" 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">@@ -690,13 +749,6 @@ loop:</td>

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<td class="diff-line-num old_line" data-linenumber="690" 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">

690

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<td class="diff-line-num new_line" data-linenumber="749" 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">

749

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<pre style="margin: 0;"> <span id="LC749" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;">       */</span></span>

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<td class="diff-line-num old_line" data-linenumber="691" 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">

691

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<td class="diff-line-num new_line" data-linenumber="750" 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">

750

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<pre style="margin: 0;"> <span id="LC750" class="line" lang="c">      <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span><span class="n" style="color: #333;">flags</span> <span class="o" style="font-weight: 600;">&</span> <span class="n" style="color: #333;">BF_LARGE</span><span class="p">)</span> <span class="p">{</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="692" 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">

692

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<td class="diff-line-num new_line" data-linenumber="751" 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">

751

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<pre style="margin: 0;"> <span id="LC751" class="line" lang="c">          <span class="n" style="color: #333;">evacuate_large</span><span class="p">((</span><span class="n" style="color: #333;">P_</span><span class="p">)</span><span class="n" style="color: #333;">q</span><span class="p">);</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="693" 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="752" 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="LC693" class="line" lang="c"></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="694" 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">

694

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<td class="diff-line-num new_line old" data-linenumber="752" 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="LC694" class="line" lang="c">          <span class="c1" style="color: #998; font-style: italic;">// We may have evacuated the block to the nonmoving generation. If so</span></span>

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<pre style="margin: 0;">-<span id="LC695" class="line" lang="c">          <span class="c1" style="color: #998; font-style: italic;">// we need to make sure it is added to the mark queue since the only</span></span>

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<td class="diff-line-num old old_line" data-linenumber="696" 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="752" 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="LC696" class="line" lang="c">          <span class="c1" style="color: #998; font-style: italic;">// reference to it may be from the moving heap.</span></span>

</pre>

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<pre style="margin: 0;">-<span id="LC697" class="line" lang="c">          <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span><span class="n" style="color: #333;">major_gc</span> <span class="o" style="font-weight: 600;">&&</span> <span class="n" style="color: #333;">flags</span> <span class="o" style="font-weight: 600;">&</span> <span class="n" style="color: #333;">BF_NONMOVING</span> <span class="o" style="font-weight: 600;">&&</span> <span class="o" style="font-weight: 600;">!</span><span class="n" style="color: #333;">deadlock_detect_gc</span><span class="p">)</span> <span class="p">{</span></span>

</pre>

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<pre style="margin: 0;">-<span id="LC698" class="line" lang="c">              <span class="n" style="color: #333;">markQueuePushClosureGC</span><span class="p">(</span><span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;">gct</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">cap</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">upd_rem_set</span><span class="p">.</span><span class="n" style="color: #333;">queue</span><span class="p">,</span> <span class="n" style="color: #333;">q</span><span class="p">);</span></span>

</pre>

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<pre style="margin: 0;">-<span id="LC699" class="line" lang="c">          <span class="p">}</span></span>

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<td class="diff-line-num old_line" data-linenumber="700" 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="LC752" class="line" lang="c">          <span class="k" style="font-weight: 600;">return</span><span class="p">;</span></span>

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<td class="diff-line-num old_line" data-linenumber="701" 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="LC753" class="line" lang="c">      <span class="p">}</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC754" class="line" lang="c"></span>

</pre>

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<br>

</li>

<li id="6477e10756faf038741e63d1ad499a1df809fe10">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/391a3f6d3776a069534a91e34e5915a0c8d0391b...e7dbdbfadf897b246a0b7d669bb559d18030c3c6#6477e10756faf038741e63d1ad499a1df809fe10"><strong>rts/sm/GC.c</strong></a>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="1689" 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="1689" 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">@@ -1689,13 +1689,8 @@ collect_gct_blocks (void)</td>

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<pre style="margin: 0;"> <span id="LC1689" class="line" lang="c"><span class="k" style="font-weight: 600;">static</span> <span class="kt" style="color: #458; font-weight: 600;">void</span></span>

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<td class="diff-line-num old_line" data-linenumber="1690" 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="LC1690" class="line" lang="c"><span class="nf" style="color: #900; font-weight: 600;">collect_pinned_object_blocks</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">void</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num new_line" data-linenumber="1691" 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="LC1691" class="line" lang="c"><span class="p">{</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="1692" 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="1692" 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="LC1692" class="line" lang="c">    <span class="n" style="color: #333;">generation</span> <span class="o" style="font-weight: 600;">*</span><span class="n" style="color: #333;">gen</span><span class="p">;</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC1692" class="line" lang="c">    <span class="k" style="font-weight: 600;">const</span> <span class="n" style="color: #333;">bool</span> <span class="n" style="color: #333;">use_nonmoving</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">RtsFlags</span><span class="p">.</span><span class="n" style="color: #333;">GcFlags</span><span class="p">.</span><span class="n" style="color: #333;">useNonmoving</span><span class="p">;</span></span>

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<td class="diff-line-num old old_line" data-linenumber="1694" 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="1693" 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="LC1694" class="line" lang="c">    <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span><span class="n" style="color: #333;">use_nonmoving</span> <span class="o" style="font-weight: 600;">&&</span> <span class="n" style="color: #333;">major_gc</span><span class="p">)</span> <span class="p">{</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="1695" 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="1693" 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="LC1695" class="line" lang="c">        <span class="n" style="color: #333;">gen</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">oldest_gen</span><span class="p">;</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="1696" 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="1693" 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="LC1696" class="line" lang="c">    <span class="p">}</span> <span class="k" style="font-weight: 600;">else</span> <span class="p">{</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="1697" 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="1693" 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="LC1697" class="line" lang="c">        <span class="n" style="color: #333;">gen</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">g0</span><span class="p">;</span></span>

</pre>

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<td class="diff-line-num new_line old" data-linenumber="1693" 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="LC1698" class="line" lang="c">    <span class="p">}</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="1699" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="1693" 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">

1693

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<pre style="margin: 0;">+<span id="LC1693" class="line" lang="c">    <span class="n" style="color: #333;">generation</span> <span class="o" style="font-weight: 600;">*</span><span class="k" style="font-weight: 600;">const</span> <span class="n" style="color: #333;">gen</span> <span class="o" style="font-weight: 600;">=</span> <span class="p">(</span><span class="n" style="color: #333;">use_nonmoving</span> <span class="o" style="font-weight: 600;">&&</span> <span class="n" style="color: #333;">major_gc</span><span class="p">)</span> <span class="o" style="font-weight: 600;">?</span> <span class="n" style="color: #333;">oldest_gen</span> <span class="o" style="font-weight: 600;">:</span> <span class="n" style="color: #333;">g0</span><span class="p">;</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1699" 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">

1699

</td>

<td class="diff-line-num new_line" data-linenumber="1694" 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">

1694

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

<pre style="margin: 0;"> <span id="LC1694" class="line" lang="c"></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="1700" 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">

1700

</td>

<td class="diff-line-num new_line" data-linenumber="1695" 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">

1695

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<pre style="margin: 0;"> <span id="LC1695" class="line" lang="c">    <span class="k" style="font-weight: 600;">for</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">uint32_t</span> <span class="n" style="color: #333;">n</span> <span class="o" style="font-weight: 600;">=</span> <span class="mi" style="color: #099;">0</span><span class="p">;</span> <span class="n" style="color: #333;">n</span> <span class="o" style="font-weight: 600;"><</span> <span class="n" style="color: #333;">n_capabilities</span><span class="p">;</span> <span class="n" style="color: #333;">n</span><span class="o" style="font-weight: 600;">++</span><span class="p">)</span> <span class="p">{</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1701" 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">

1701

</td>

<td class="diff-line-num new_line" data-linenumber="1696" 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">

1696

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<pre style="margin: 0;"> <span id="LC1696" class="line" lang="c">        <span class="n" style="color: #333;">bdescr</span> <span class="o" style="font-weight: 600;">*</span><span class="n" style="color: #333;">last</span> <span class="o" style="font-weight: 600;">=</span> <span class="nb" style="color: #0086b3;">NULL</span><span class="p">;</span></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="1720" 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="1715" 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">@@ -1720,7 +1715,7 @@ collect_pinned_object_blocks (void)</td>

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<td class="diff-line-num old_line" data-linenumber="1720" 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">

1720

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<td class="diff-line-num new_line" data-linenumber="1715" 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">

1715

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<pre style="margin: 0;"> <span id="LC1715" class="line" lang="c">            <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span><span class="n" style="color: #333;">gen</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">large_objects</span> <span class="o" style="font-weight: 600;">!=</span> <span class="nb" style="color: #0086b3;">NULL</span><span class="p">)</span> <span class="p">{</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1721" 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">

1721

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<td class="diff-line-num new_line" data-linenumber="1716" 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">

1716

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<pre style="margin: 0;"> <span id="LC1716" class="line" lang="c">                <span class="n" style="color: #333;">gen</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">large_objects</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">u</span><span class="p">.</span><span class="n" style="color: #333;">back</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">last</span><span class="p">;</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1722" 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">

1722

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<td class="diff-line-num new_line" data-linenumber="1717" 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">

1717

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<pre style="margin: 0;"> <span id="LC1717" class="line" lang="c">            <span class="p">}</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="1723" 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">

1723

</td>

<td class="diff-line-num new_line old" data-linenumber="1718" 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="LC1723" class="line" lang="c">            <span class="n" style="color: #333;">g<span class="idiff left right">0</span></span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">large_objects</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">RELAXED_LOAD</span><span class="p">(</span><span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;">capabilities</span><span class="p">[</span><span class="n" style="color: #333;">n</span><span class="p">]</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">pinned_object_blocks</span><span class="p">);</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="1724" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="1718" 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">

1718

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<pre style="margin: 0;">+<span id="LC1718" class="line" lang="c">            <span class="n" style="color: #333;">g<span class="idiff left right">en</span></span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">large_objects</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">RELAXED_LOAD</span><span class="p">(</span><span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;">capabilities</span><span class="p">[</span><span class="n" style="color: #333;">n</span><span class="p">]</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">pinned_object_blocks</span><span class="p">);</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1724" 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">

1724

</td>

<td class="diff-line-num new_line" data-linenumber="1719" 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">

1719

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<pre style="margin: 0;"> <span id="LC1719" class="line" lang="c">            <span class="n" style="color: #333;">RELAXED_STORE</span><span class="p">(</span><span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;">capabilities</span><span class="p">[</span><span class="n" style="color: #333;">n</span><span class="p">]</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">pinned_object_blocks</span><span class="p">,</span> <span class="nb" style="color: #0086b3;">NULL</span><span class="p">);</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1725" 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">

1725

</td>

<td class="diff-line-num new_line" data-linenumber="1720" 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">

1720

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<pre style="margin: 0;"> <span id="LC1720" class="line" lang="c">        <span class="p">}</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1726" 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">

1726

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<td class="diff-line-num new_line" data-linenumber="1721" 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">

1721

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<pre style="margin: 0;"> <span id="LC1721" class="line" lang="c">    <span class="p">}</span></span>

</pre>

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<br>

</li>

<li id="b4a38dad10ba126e05a0b6adc99aa0c2eb742875">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/391a3f6d3776a069534a91e34e5915a0c8d0391b...e7dbdbfadf897b246a0b7d669bb559d18030c3c6#b4a38dad10ba126e05a0b6adc99aa0c2eb742875"><strong>rts/sm/NonMoving.c</strong></a>

<hr>

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

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="191" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="191" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -191,8 +191,8 @@ Mutex concurrent_coll_finished_lock;</td>

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<td class="diff-line-num old_line" data-linenumber="191" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

191

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<td class="diff-line-num new_line" data-linenumber="191" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

191

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<pre style="margin: 0;"> <span id="LC191" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * === Other references ===</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="192" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

192

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<td class="diff-line-num new_line" data-linenumber="192" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

192

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<pre style="margin: 0;"> <span id="LC192" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *</span></span>

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<pre style="margin: 0;"> <span id="LC193" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * Apart from the design document in docs/storage/nonmoving-gc and the Ueno</span></span>

</pre>

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<td class="diff-line-num new_line old" data-linenumber="194" 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="LC194" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * 2016 paper <span class="idiff left right">(TODO citation) from which it drew inspiration, there are a</span></span></span>

</pre>

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

195

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<td class="diff-line-num new_line old" data-linenumber="194" 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="LC195" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * <span class="idiff left right">variety </span>of other relevant Notes scattered throughout the tree:</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="196" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<td class="diff-line-num new new_line" data-linenumber="194" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC194" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * 2016 paper <span class="idiff left right">[ueno 2016] from which it drew inspiration, there are a variety</span></span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="195" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

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<pre style="margin: 0;">+<span id="LC195" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * of other relevant Notes scattered throughout the tree:</span></span>

</pre>

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

196

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<pre style="margin: 0;"> <span id="LC196" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="197" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

197

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<pre style="margin: 0;"> <span id="LC197" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *  - Note [Concurrent non-moving collection] (NonMoving.c) describes</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="198" 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="LC198" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *    concurrency control of the nonmoving collector</span></span>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="204" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="204" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -204,6 +204,10 @@ Mutex concurrent_coll_finished_lock;</td>

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<td class="diff-line-num old_line" data-linenumber="204" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC204" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *  - Note [Aging under the non-moving collector] (NonMoving.c) describes how</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="205" 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="LC205" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *    we accomodate aging</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="206" 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="LC206" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="207" 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="207" 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="LC207" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *  - Note [Non-moving GC: Marking evacuated objects] (Evac.c) describes how</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="207" 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="208" 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="LC208" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *    non-moving objects reached by evacuate() are marked, which is necessary</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="207" 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="209" 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="LC209" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *    due to aging.</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="207" 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="210" 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="LC210" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="207" 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="211" 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="LC211" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *  - Note [Large objects in the non-moving collector] (NonMovingMark.c)</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="208" 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="212" 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="LC212" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *    describes how we track large objects.</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="209" 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="213" 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="LC213" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *</span></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="232" 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="236" 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">@@ -232,6 +236,11 @@ Mutex concurrent_coll_finished_lock;</td>

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<pre style="margin: 0;"> <span id="LC236" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *    how we use the DIRTY flags associated with MUT_VARs and TVARs to improve</span></span>

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<pre style="margin: 0;"> <span id="LC237" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *    barrier efficiency.</span></span>

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<pre style="margin: 0;"> <span id="LC238" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *</span></span>

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<pre style="margin: 0;">+<span id="LC239" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * [ueno 2016]:</span></span>

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<pre style="margin: 0;">+<span id="LC240" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *   Katsuhiro Ueno and Atsushi Ohori. 2016. A fully concurrent garbage</span></span>

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<pre style="margin: 0;">+<span id="LC241" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *   collector for functional programs on multicore processors. SIGPLAN Not. 51,</span></span>

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<pre style="margin: 0;">+<span id="LC242" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *   9 (September 2016), 421–433. DOI:https://doi.org/10.1145/3022670.2951944</span></span>

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<pre style="margin: 0;">+<span id="LC243" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *</span></span>

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<pre style="margin: 0;"> <span id="LC244" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *</span></span>

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<pre style="margin: 0;"> <span id="LC245" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * Note [Concurrent non-moving collection]</span></span>

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<pre style="margin: 0;"> <span id="LC246" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~</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">@@ -312,6 +321,8 @@ Mutex concurrent_coll_finished_lock;</td>

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<pre style="margin: 0;"> <span id="LC321" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *</span></span>

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<pre style="margin: 0;"> <span id="LC322" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *     The non-moving collector will come to C in the mark queue and mark it.</span></span>

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<pre style="margin: 0;"> <span id="LC323" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *</span></span>

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<pre style="margin: 0;">+<span id="LC324" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * The implementation details of this are described in Note [Non-moving GC:</span></span>

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<pre style="margin: 0;">+<span id="LC325" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * Marking evacuated objects] in Evac.c.</span></span>

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<pre style="margin: 0;"> <span id="LC326" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *</span></span>

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<pre style="margin: 0;"> <span id="LC327" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * Note [Deadlock detection under the non-moving collector]</span></span>

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<pre style="margin: 0;"> <span id="LC328" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~</span></span>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="726" 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="737" 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">@@ -726,7 +737,6 @@ void nonmovingStop(void)</td>

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726

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737

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<pre style="margin: 0;"> <span id="LC737" class="line" lang="c">                   <span class="s" style="color: #d14;">"waiting for nonmoving collector thread to terminate"</span><span class="p">);</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC738" class="line" lang="c">        <span class="n" style="color: #333;">ACQUIRE_LOCK</span><span class="p">(</span><span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;">concurrent_coll_finished_lock</span><span class="p">);</span></span>

</pre>

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739

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<pre style="margin: 0;"> <span id="LC739" class="line" lang="c">        <span class="n" style="color: #333;">waitCondition</span><span class="p">(</span><span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;">concurrent_coll_finished</span><span class="p">,</span> <span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;">concurrent_coll_finished_lock</span><span class="p">);</span></span>

</pre>

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729

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<pre style="margin: 0;">-<span id="LC729" class="line" lang="c">        <span class="n" style="color: #333;">joinOSThread</span><span class="p">(</span><span class="n" style="color: #333;">mark_thread</span><span class="p">);</span></span>

</pre>

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730

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<pre style="margin: 0;"> <span id="LC740" class="line" lang="c">    <span class="p">}</span></span>

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741

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<pre style="margin: 0;"> <span id="LC741" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#endif</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC742" class="line" lang="c"><span class="p">}</span></span>

</pre>

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<br>

</li>

<li id="58096134fc46f90956354534c54f43e04f893269">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/391a3f6d3776a069534a91e34e5915a0c8d0391b...e7dbdbfadf897b246a0b7d669bb559d18030c3c6#58096134fc46f90956354534c54f43e04f893269"><strong>rts/sm/Sanity.c</strong></a>

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<td class="diff-line-num unfold js-unfold new_line" data-linenumber="224" 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">@@ -224,6 +224,111 @@ checkClosureProfSanity(const StgClosure *p)</td>

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<pre style="margin: 0;"> <span id="LC224" class="line" lang="c"><span class="p">}</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC225" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#endif</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC226" class="line" lang="c"></span>

</pre>

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<pre style="margin: 0;">+<span id="LC227" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;">/* Note [Racing weak pointer evacuation]</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC228" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~</span></span>

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<pre style="margin: 0;">+<span id="LC229" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * While debugging a GC crash (#18919) I noticed a spurious crash due to the</span></span>

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<pre style="margin: 0;">+<span id="LC230" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * end-of-GC sanity check stumbling across a weak pointer with unevacuated key.</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC231" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * This can happen when two GC threads race to evacuate a weak pointer.</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC232" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * Specifically, we start out with a heap with a weak pointer reachable</span></span>

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<pre style="margin: 0;">+<span id="LC233" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * from both a generation's weak pointer list and some other root-reachable</span></span>

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<pre style="margin: 0;">+<span id="LC234" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * closure (e.g. a Just constructor):</span></span>

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<pre style="margin: 0;">+<span id="LC235" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *</span></span>

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<pre style="margin: 0;">+<span id="LC236" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *            O                      W</span></span>

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<pre style="margin: 0;">+<span id="LC237" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *            ┌──────────┐           ┌──────────┐</span></span>

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<pre style="margin: 0;">+<span id="LC238" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * Root ────→ │ Just     │     ╭───→ │ Weak#    │ ←─────── weak_ptr_list</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC239" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * Set        ├──────────┤     │     ├──────────┤</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC240" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *            │          │ ────╯     │ value    │ ─→ ...</span></span>

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<pre style="margin: 0;">+<span id="LC241" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *            └──────────┘           │ key      │ ───╮    K</span></span>

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<pre style="margin: 0;">+<span id="LC242" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *                                   │ ...      │    │    ┌──────────┐</span></span>

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<pre style="margin: 0;">+<span id="LC243" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *                                   └──────────┘    ╰──→ │ ...      │</span></span>

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<pre style="margin: 0;">+<span id="LC244" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *                                                        ├──────────┤</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC245" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *</span></span>

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<pre style="margin: 0;">+<span id="LC246" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * The situation proceeds as follows:</span></span>

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<pre style="margin: 0;">+<span id="LC247" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *</span></span>

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<pre style="margin: 0;">+<span id="LC248" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * 1. Thread A initiates a GC, wakes up the GC worker threads, and starts</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC249" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *    evacuating roots.</span></span>

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<pre style="margin: 0;">+<span id="LC250" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * 2. Thread A evacuates a weak pointer object O to location O'.</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC251" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * 3. Thread A fills the block where O' lives and pushes it to its</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC252" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *    work-stealing queue.</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC253" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * 4. Thread B steals the O' block and starts scavenging it.</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC254" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * 5. Thread A enters markWeakPtrList.</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC255" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * 6. Thread A starts evacuating W, resulting in Wb'.</span></span>

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<pre style="margin: 0;">+<span id="LC256" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * 7. Thread B scavenges O', evacuating W', resulting in Wa'.</span></span>

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<pre style="margin: 0;">+<span id="LC257" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * 8. Thread A and B are now racing to evacuate W. Only one will win the race</span></span>

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<pre style="margin: 0;">+<span id="LC258" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *    (due to the CAS in copy_tag). Let the winning copy be called W'.</span></span>

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<pre style="margin: 0;">+<span id="LC259" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * 9. W will be replaced by a forwarding pointer to the winning copy, W'.</span></span>

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<pre style="margin: 0;">+<span id="LC260" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * 10. Whichever thread loses the race will retry evacuation, see</span></span>

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<pre style="margin: 0;">+<span id="LC261" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *     that W has already been evacuated, and proceed as usual.</span></span>

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<pre style="margin: 0;">+<span id="LC262" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * 10. W' will get added to weak_ptr_list by markWeakPtrList.</span></span>

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<pre style="margin: 0;">+<span id="LC263" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * 11. Eventually W' will be scavenged.</span></span>

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<pre style="margin: 0;">+<span id="LC264" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * 12. traverseWeakPtrList will see that W' has been scavenged and evacuate the</span></span>

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<pre style="margin: 0;">+<span id="LC265" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *     its key.</span></span>

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<pre style="margin: 0;">+<span id="LC266" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * 13. However, the copy that lost the race is not on `weak_ptr_list`</span></span>

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<pre style="margin: 0;">+<span id="LC267" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *     and will therefore never get its `key` field scavenged (since</span></span>

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<pre style="margin: 0;">+<span id="LC268" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *     `traverseWeakPtrList` will never see it).</span></span>

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<pre style="margin: 0;">+<span id="LC269" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *</span></span>

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<pre style="margin: 0;">+<span id="LC270" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * Now the heap looks like:</span></span>

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<pre style="margin: 0;">+<span id="LC271" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *</span></span>

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<pre style="margin: 0;">+<span id="LC272" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *            O'                     W (from-space)</span></span>

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<pre style="margin: 0;">+<span id="LC273" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *            ┌──────────┐           ┌──────────┐</span></span>

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<pre style="margin: 0;">+<span id="LC274" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * Root ────→ │ Just     │           │ Fwd-ptr  │ ───────────╮</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="275" 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">

275

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<pre style="margin: 0;">+<span id="LC275" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * Set        ├──────────┤           ├──────────┤            │</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="227" 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="276" 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">

276

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<pre style="margin: 0;">+<span id="LC276" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *            │          │ ────╮     │ value    │ ─→ ...     │</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="227" 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="277" 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">

277

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<pre style="margin: 0;">+<span id="LC277" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *            └──────────┘     │     │ key      │ ────────────────────────╮</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="278" 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">

278

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

<pre style="margin: 0;">+<span id="LC278" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *                             │     │ ...      │            │            │</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="227" 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="279" 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">

279

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

<pre style="margin: 0;">+<span id="LC279" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *                             │     └──────────┘            │            │</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="280" 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">

280

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

<pre style="margin: 0;">+<span id="LC280" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *                             │                             │            │</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="281" 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">

281

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<pre style="margin: 0;">+<span id="LC281" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *                             │     Wa'                     │            │</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="282" 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">

282

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

<pre style="margin: 0;">+<span id="LC282" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *                             │     ┌──────────┐       ╭────╯            │</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="283" 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">

283

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

<pre style="margin: 0;">+<span id="LC283" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *                             ╰───→ │ Weak#    │ ←─────┤                 │</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="284" 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">

284

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

<pre style="margin: 0;">+<span id="LC284" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *                                   ├──────────┤       ╰─ weak_ptr_list  │</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="285" 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">

285

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

<pre style="margin: 0;">+<span id="LC285" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *                                   │ value    │ ─→ ...                  │</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="286" 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">

286

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<pre style="margin: 0;">+<span id="LC286" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *                                   │ key      │ ───╮    K'              │</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="287" 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="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC287" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *                                   │ ...      │    │    ┌──────────┐    │</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="288" 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">

288

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

<pre style="margin: 0;">+<span id="LC288" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *                                   └──────────┘    ╰──→ │ ...      │    │</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="289" 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="LC289" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *                                                        ├──────────┤    │</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="290" 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="LC290" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *                                   Wb'                                  │</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="291" 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">

291

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

<pre style="margin: 0;">+<span id="LC291" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *                                   ┌──────────┐                         │</span></span>

</pre>

</td>

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<td class="diff-line-num new new_line" data-linenumber="292" 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="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC292" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *                                   │ Weak#    │                         │</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="293" 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="LC293" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *                                   ├──────────┤                         │</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC294" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *                                   │ value    │ ─→ ...                  │</span></span>

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<pre style="margin: 0;">+<span id="LC295" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *                                   │ key      │ ───╮    K (from-space)  │</span></span>

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<pre style="margin: 0;">+<span id="LC296" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *                                   │ ...      │    │    ┌──────────┐    │</span></span>

</pre>

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297

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<pre style="margin: 0;">+<span id="LC297" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *                                   └──────────┘    ╰──→ │ 0xaaaaa  │ ←──╯</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC298" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *                                                        ├──────────┤</span></span>

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<pre style="margin: 0;">+<span id="LC299" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *</span></span>

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<pre style="margin: 0;">+<span id="LC300" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *</span></span>

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<pre style="margin: 0;">+<span id="LC301" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * Without sanity checking this is fine; we have introduced a spurious copy of</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC302" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * W, Wb' into the heap but it is unreachable and therefore won't cause any</span></span>

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<pre style="margin: 0;">+<span id="LC303" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * trouble. However, with sanity checking we may encounter this spurious copy</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC304" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * when walking the heap. Moreover, this copy was never added to weak_ptr_list,</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC305" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * meaning that its key field (along with the other fields mark as</span></span>

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<pre style="margin: 0;">+<span id="LC306" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * non-pointers) will not get scavenged and will therefore point into</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC307" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * from-space.</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC308" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC309" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * To avoid this checkClosure skips over the key field when it sees a weak</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC310" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * pointer. Note that all fields of Wb' *other* than the key field should be</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC311" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * valid, so we don't skip the closure entirely.</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC312" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC313" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * We then do additional checking of all closures on the weak_ptr_lists, where</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC314" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * we *do* check `key`.</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC315" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> */</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC316" class="line" lang="c"></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="317" 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="LC317" class="line" lang="c"><span class="c1" style="color: #998; font-style: italic;">// Check validity of objects on weak_ptr_list.</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC318" class="line" lang="c"><span class="c1" style="color: #998; font-style: italic;">// See Note [Racing weak pointer evacuation].</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC319" class="line" lang="c"><span class="k" style="font-weight: 600;">static</span> <span class="kt" style="color: #458; font-weight: 600;">void</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC320" class="line" lang="c"><span class="nf" style="color: #900; font-weight: 600;">checkGenWeakPtrList</span><span class="p">(</span> <span class="kt" style="color: #458; font-weight: 600;">uint32_t</span> <span class="n" style="color: #333;">g</span> <span class="p">)</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC321" class="line" lang="c"><span class="p">{</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC322" class="line" lang="c">  <span class="k" style="font-weight: 600;">for</span> <span class="p">(</span><span class="n" style="color: #333;">StgWeak</span> <span class="o" style="font-weight: 600;">*</span><span class="n" style="color: #333;">w</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">generations</span><span class="p">[</span><span class="n" style="color: #333;">g</span><span class="p">].</span><span class="n" style="color: #333;">weak_ptr_list</span><span class="p">;</span> <span class="n" style="color: #333;">w</span> <span class="o" style="font-weight: 600;">!=</span> <span class="nb" style="color: #0086b3;">NULL</span><span class="p">;</span> <span class="n" style="color: #333;">w</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">w</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">link</span><span class="p">)</span> <span class="p">{</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC323" class="line" lang="c">    <span class="n" style="color: #333;">ASSERT</span><span class="p">(</span><span class="n" style="color: #333;">LOOKS_LIKE_CLOSURE_PTR</span><span class="p">(</span><span class="n" style="color: #333;">w</span><span class="p">));</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="324" 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="LC324" class="line" lang="c">    <span class="n" style="color: #333;">ASSERT</span><span class="p">(</span><span class="n" style="color: #333;">w</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">header</span><span class="p">.</span><span class="n" style="color: #333;">info</span> <span class="o" style="font-weight: 600;">==</span> <span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;">stg_WEAK_info</span><span class="p">);</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="325" 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="LC325" class="line" lang="c">    <span class="n" style="color: #333;">ASSERT</span><span class="p">(</span><span class="n" style="color: #333;">LOOKS_LIKE_CLOSURE_PTR</span><span class="p">(</span><span class="n" style="color: #333;">w</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">key</span><span class="p">));</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC326" class="line" lang="c">    <span class="n" style="color: #333;">ASSERT</span><span class="p">(</span><span class="n" style="color: #333;">LOOKS_LIKE_CLOSURE_PTR</span><span class="p">(</span><span class="n" style="color: #333;">w</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">value</span><span class="p">));</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="327" 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="LC327" class="line" lang="c">    <span class="n" style="color: #333;">ASSERT</span><span class="p">(</span><span class="n" style="color: #333;">LOOKS_LIKE_CLOSURE_PTR</span><span class="p">(</span><span class="n" style="color: #333;">w</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">finalizer</span><span class="p">));</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="328" 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="LC328" class="line" lang="c">    <span class="n" style="color: #333;">ASSERT</span><span class="p">(</span><span class="n" style="color: #333;">LOOKS_LIKE_CLOSURE_PTR</span><span class="p">(</span><span class="n" style="color: #333;">w</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">cfinalizers</span><span class="p">));</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="329" 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="LC329" class="line" lang="c">  <span class="p">}</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC330" class="line" lang="c"><span class="p">}</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC331" class="line" lang="c"></span>

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<pre style="margin: 0;"> <span id="LC332" class="line" lang="c"><span class="c1" style="color: #998; font-style: italic;">// Returns closure size in words</span></span>

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<pre style="margin: 0;"> <span id="LC333" class="line" lang="c"><span class="n" style="color: #333;">StgOffset</span></span>

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<pre style="margin: 0;"> <span id="LC334" class="line" lang="c"><span class="nf" style="color: #900; font-weight: 600;">checkClosure</span><span class="p">(</span> <span class="k" style="font-weight: 600;">const</span> <span class="n" style="color: #333;">StgClosure</span><span class="o" style="font-weight: 600;">*</span> <span class="n" style="color: #333;">p</span> <span class="p">)</span></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="343" 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="448" 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">@@ -343,12 +448,9 @@ checkClosure( const StgClosure* p )</td>

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<pre style="margin: 0;"> <span id="LC448" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;">       * representative of the actual layout.</span></span>

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<pre style="margin: 0;"> <span id="LC449" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;">       */</span></span>

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<pre style="margin: 0;"> <span id="LC450" class="line" lang="c">      <span class="p">{</span> <span class="n" style="color: #333;">StgWeak</span> <span class="o" style="font-weight: 600;">*</span><span class="n" style="color: #333;">w</span> <span class="o" style="font-weight: 600;">=</span> <span class="p">(</span><span class="n" style="color: #333;">StgWeak</span> <span class="o" style="font-weight: 600;">*</span><span class="p">)</span><span class="n" style="color: #333;">p</span><span class="p">;</span></span>

</pre>

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<pre style="margin: 0;">-<span id="LC346" class="line" lang="c">        <span class="n" style="color: #333;">ASSERT</span><span class="p">(</span><span class="n" style="color: #333;">LOOKS_LIKE_CLOSURE_PTR</span><span class="p">(</span><span class="n" style="color: #333;">w</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">key</span><span class="p">));</span></span>

</pre>

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<pre style="margin: 0;">-<span id="LC347" class="line" lang="c">        <span class="n" style="color: #333;">ASSERT</span><span class="p">(</span><span class="n" style="color: #333;">LOOKS_LIKE_CLOSURE_PTR</span><span class="p">(</span><span class="n" style="color: #333;">w</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">value</span><span class="p">));</span></span>

</pre>

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<pre style="margin: 0;">-<span id="LC348" class="line" lang="c">        <span class="n" style="color: #333;">ASSERT</span><span class="p">(</span><span class="n" style="color: #333;">LOOKS_LIKE_CLOSURE_PTR</span><span class="p">(</span><span class="n" style="color: #333;">w</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">finalizer</span><span class="p">));</span></span>

</pre>

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<pre style="margin: 0;">-<span id="LC349" class="line" lang="c">        <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span><span class="n" style="color: #333;">w</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">link</span><span class="p">)</span> <span class="p">{</span></span>

</pre>

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<td class="diff-line-num new_line old" data-linenumber="451" 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="LC350" class="line" lang="c">          <span class="n" style="color: #333;">ASSERT</span><span class="p">(</span><span class="n" style="color: #333;">LOOKS_LIKE_CLOSURE_PTR</span><span class="p">(</span><span class="n" style="color: #333;">w</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">link</span><span class="p">));</span></span>

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<pre style="margin: 0;">-<span id="LC351" class="line" lang="c">        <span class="p">}</span></span>

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<pre style="margin: 0;">+<span id="LC451" class="line" lang="c">        <span class="c1" style="color: #998; font-style: italic;">// N.B. Checking most of the fields here is not safe.</span></span>

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<pre style="margin: 0;">+<span id="LC452" class="line" lang="c">        <span class="c1" style="color: #998; font-style: italic;">// See Note [Racing weak pointer evacuation] for why.</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC453" class="line" lang="c">        <span class="n" style="color: #333;">ASSERT</span><span class="p">(</span><span class="n" style="color: #333;">LOOKS_LIKE_CLOSURE_PTR</span><span class="p">(</span><span class="n" style="color: #333;">w</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">cfinalizers</span><span class="p">));</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC454" class="line" lang="c">        <span class="k" style="font-weight: 600;">return</span> <span class="n" style="color: #333;">sizeW_fromITBL</span><span class="p">(</span><span class="n" style="color: #333;">info</span><span class="p">);</span></span>

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<pre style="margin: 0;"> <span id="LC455" class="line" lang="c">      <span class="p">}</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="354" 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">

354

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<td class="diff-line-num new_line" data-linenumber="456" 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">

456

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<pre style="margin: 0;"> <span id="LC456" class="line" lang="c"></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="851" 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="953" 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">@@ -851,6 +953,12 @@ static void checkGeneration (generation *gen,</td>

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<td class="diff-line-num old_line" data-linenumber="851" 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">

851

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<pre style="margin: 0;"> <span id="LC953" class="line" lang="c">        <span class="n" style="color: #333;">checkHeapChain</span><span class="p">(</span><span class="n" style="color: #333;">ws</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">scavd_list</span><span class="p">);</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="852" 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">

852

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<td class="diff-line-num new_line" data-linenumber="954" 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">

954

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<pre style="margin: 0;"> <span id="LC954" class="line" lang="c">    <span class="p">}</span></span>

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<td class="diff-line-num old_line" data-linenumber="853" 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">

853

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<td class="diff-line-num new_line" data-linenumber="955" 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">

955

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<pre style="margin: 0;"> <span id="LC955" class="line" lang="c"></span>

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<td class="diff-line-num new old_line" data-linenumber="854" 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="956" 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="LC956" class="line" lang="c">    <span class="c1" style="color: #998; font-style: italic;">// Check weak pointer lists</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="854" 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="957" 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="LC957" class="line" lang="c">    <span class="c1" style="color: #998; font-style: italic;">// See Note [Racing weak pointer evacuation].</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="854" 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="958" 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="LC958" class="line" lang="c">    <span class="k" style="font-weight: 600;">for</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">uint32_t</span> <span class="n" style="color: #333;">g</span> <span class="o" style="font-weight: 600;">=</span> <span class="mi" style="color: #099;">0</span><span class="p">;</span> <span class="n" style="color: #333;">g</span> <span class="o" style="font-weight: 600;"><</span> <span class="n" style="color: #333;">RtsFlags</span><span class="p">.</span><span class="n" style="color: #333;">GcFlags</span><span class="p">.</span><span class="n" style="color: #333;">generations</span><span class="p">;</span> <span class="n" style="color: #333;">g</span><span class="o" style="font-weight: 600;">++</span><span class="p">)</span> <span class="p">{</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="854" 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="959" 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="LC959" class="line" lang="c">      <span class="n" style="color: #333;">checkGenWeakPtrList</span><span class="p">(</span><span class="n" style="color: #333;">g</span><span class="p">);</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="854" 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="960" 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="LC960" class="line" lang="c">    <span class="p">}</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="854" 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="961" 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">

961

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<pre style="margin: 0;">+<span id="LC961" class="line" lang="c"></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="854" 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">

854

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<td class="diff-line-num new_line" data-linenumber="962" 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">

962

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<pre style="margin: 0;"> <span id="LC962" class="line" lang="c">    <span class="n" style="color: #333;">checkLargeObjects</span><span class="p">(</span><span class="n" style="color: #333;">gen</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">large_objects</span><span class="p">);</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="855" 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">

855

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<td class="diff-line-num new_line" data-linenumber="963" 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">

963

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<pre style="margin: 0;"> <span id="LC963" class="line" lang="c">    <span class="n" style="color: #333;">checkCompactObjects</span><span class="p">(</span><span class="n" style="color: #333;">gen</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">compact_objects</span><span class="p">);</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="856" 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">

856

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<td class="diff-line-num new_line" data-linenumber="964" 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">

964

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<pre style="margin: 0;"> <span id="LC964" class="line" lang="c"><span class="p">}</span></span>

</pre>

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<br>

</li>

<li id="20d64c0bdc272817149d1d5cf20a73a8b5fd637f">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/391a3f6d3776a069534a91e34e5915a0c8d0391b...e7dbdbfadf897b246a0b7d669bb559d18030c3c6#20d64c0bdc272817149d1d5cf20a73a8b5fd637f"><strong>rts/win32/OSMem.c</strong></a>

<hr>

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

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="67" 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="67" 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">@@ -67,8 +67,11 @@ allocNew(uint32_t n) {</td>

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<pre style="margin: 0;"> <span id="LC67" class="line" lang="c">    <span class="n" style="color: #333;">alloc_rec</span><span class="o" style="font-weight: 600;">*</span> <span class="n" style="color: #333;">rec</span><span class="p">;</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC68" class="line" lang="c">    <span class="n" style="color: #333;">rec</span> <span class="o" style="font-weight: 600;">=</span> <span class="p">(</span><span class="n" style="color: #333;">alloc_rec</span><span class="o" style="font-weight: 600;">*</span><span class="p">)</span><span class="n" style="color: #333;">stgMallocBytes</span><span class="p">(</span><span class="k" style="font-weight: 600;">sizeof</span><span class="p">(</span><span class="n" style="color: #333;">alloc_rec</span><span class="p">),</span><span class="s" style="color: #d14;">"getMBlocks: allocNew"</span><span class="p">);</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC69" class="line" lang="c">    <span class="n" style="color: #333;">rec</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">size</span> <span class="o" style="font-weight: 600;">=</span> <span class="p">((</span><span class="n" style="color: #333;">W_</span><span class="p">)</span><span class="n" style="color: #333;">n</span><span class="o" style="font-weight: 600;">+</span><span class="mi" style="color: #099;">1</span><span class="p">)</span><span class="o" style="font-weight: 600;">*</span><span class="n" style="color: #333;">MBLOCK_SIZE</span><span class="p">;</span></span>

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<pre style="margin: 0;">+<span id="LC70" class="line" lang="c">    <span class="c1" style="color: #998; font-style: italic;">// N.B. We use MEM_TOP_DOWN here to ensure that we leave the bottom of the</span></span>

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<pre style="margin: 0;">+<span id="LC71" class="line" lang="c">    <span class="c1" style="color: #998; font-style: italic;">// address space available for the linker and libraries, which in general</span></span>

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<pre style="margin: 0;">+<span id="LC72" class="line" lang="c">    <span class="c1" style="color: #998; font-style: italic;">// want to live in low memory. See #18991.</span></span>

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<pre style="margin: 0;"> <span id="LC73" class="line" lang="c">    <span class="n" style="color: #333;">rec</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">base</span> <span class="o" style="font-weight: 600;">=</span></span>

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<pre style="margin: 0;">-<span id="LC71" class="line" lang="c">        <span class="n" style="color: #333;">VirtualAlloc</span><span class="p">(</span><span class="nb" style="color: #0086b3;">NULL</span><span class="p">,</span> <span class="n" style="color: #333;">rec</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">size</span><span class="p">,</span> <span class="n" style="color: #333;">MEM_RESERVE</span><span class="p">,</span> <span class="n" style="color: #333;">PAGE_READWRITE</span><span class="p">);</span></span>

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<pre style="margin: 0;">+<span id="LC74" class="line" lang="c">        <span class="n" style="color: #333;">VirtualAlloc</span><span class="p">(</span><span class="nb" style="color: #0086b3;">NULL</span><span class="p">,</span> <span class="n" style="color: #333;">rec</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">size</span><span class="p">,</span> <span class="n" style="color: #333;">MEM_RESERVE</span><span class="idiff left"> </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">MEM_TOP_DOWN</span></span><span class="p">,</span> <span class="n" style="color: #333;">PAGE_READWRITE</span><span class="p">);</span></span>

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<pre style="margin: 0;"> <span id="LC75" class="line" lang="c">    <span class="k" style="font-weight: 600;">if</span><span class="p">(</span><span class="n" style="color: #333;">rec</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">base</span><span class="o" style="font-weight: 600;">==</span><span class="mi" style="color: #099;">0</span><span class="p">)</span> <span class="p">{</span></span>

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<pre style="margin: 0;"> <span id="LC76" class="line" lang="c">        <span class="n" style="color: #333;">stgFree</span><span class="p">((</span><span class="kt" style="color: #458; font-weight: 600;">void</span><span class="o" style="font-weight: 600;">*</span><span class="p">)</span><span class="n" style="color: #333;">rec</span><span class="p">);</span></span>

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<pre style="margin: 0;"> <span id="LC77" class="line" lang="c">        <span class="n" style="color: #333;">rec</span><span class="o" style="font-weight: 600;">=</span><span class="mi" style="color: #099;">0</span><span class="p">;</span></span>

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