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Marge Bot pushed to branch master at <a href="https://gitlab.haskell.org/ghc/ghc" style="color: #1068bf;">Glasgow Haskell Compiler / GHC</a>
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Commits:
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<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/77a8234c5d284846e18c0a44ba5ee196059aaea6" style="color: #1068bf;">77a8234c</a></strong>
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<span> by Luite Stegeman </span> <i> at 2023-02-06T09:43:59-05:00 </i>
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<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.8125rem; color: #303030; position: relative; font-family: "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; word-break: break-all; word-wrap: break-word; background-color: #fafafa; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dbdbdb;'>Fix marking async exceptions in the JS backend

Async exceptions are posted as a pair of the exception and
the thread object. This fixes the marking pass to correctly
follow the two elements of the pair.

Potentially fixes #22836
</pre>
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1 changed file:
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<a href="#8b279bbb3383c9f0f3b6505d5ad53fb405a742e5" style="color: #1068bf;">
rts/js/gc.js
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Changes:
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<li id="8b279bbb3383c9f0f3b6505d5ad53fb405a742e5">
<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/77a8234c5d284846e18c0a44ba5ee196059aaea6#8b279bbb3383c9f0f3b6505d5ad53fb405a742e5" style="color: #1068bf;"><strong style="font-weight: bold;">rts/js/gc.js</strong></a>
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<td class="line_content match" style="color: rgba(0,0,0,0.3); padding: inherit;" bgcolor="#fafafa">@@ -493,7 +493,8 @@ function h$follow(obj, sp) {</td>
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<td class="line_content" style="padding: inherit;"><pre style='display: block; font-size: 0.8125rem; color: #303030; position: relative; font-family: "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; word-break: break-all; word-wrap: break-word; background-color: inherit; border-radius: 2px; margin: 0; padding: 0; border: inherit solid #dbdbdb;'> <span id="LC493" class="line" lang="javascript">               <span class="p">}</span></span>
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<td class="new_line diff-line-num" data-linenumber="494" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: inherit;" align="right" bgcolor="#fafafa">
494
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<td class="line_content" style="padding: inherit;"><pre style='display: block; font-size: 0.8125rem; color: #303030; position: relative; font-family: "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; word-break: break-all; word-wrap: break-word; background-color: inherit; border-radius: 2px; margin: 0; padding: 0; border: inherit solid #dbdbdb;'> <span id="LC494" class="line" lang="javascript">                <span class="p">}</span></span>
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<td class="old_line diff-line-num" data-linenumber="495" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: inherit;" align="right" bgcolor="#fafafa">
495
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<td class="new_line diff-line-num" data-linenumber="495" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: inherit;" align="right" bgcolor="#fafafa">
495
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<td class="line_content" style="padding: inherit;"><pre style='display: block; font-size: 0.8125rem; color: #303030; position: relative; font-family: "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; word-break: break-all; word-wrap: break-word; background-color: inherit; border-radius: 2px; margin: 0; padding: 0; border: inherit solid #dbdbdb;'> <span id="LC495" class="line" lang="javascript">           <span class="k" style="font-weight: 600;">for</span><span class="p">(</span><span class="nx">i</span><span class="o" style="font-weight: 600;">=</span><span class="mi" style="color: #099;">0</span><span class="p">;</span><span class="nx">i</span><span class="o" style="font-weight: 600;"><</span><span class="nx">c</span><span class="p">.</span><span class="nx">excep</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span><span class="nx">i</span><span class="o" style="font-weight: 600;">++</span><span class="p">)</span> <span class="p">{</span></span>
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<td class="old_line diff-line-num old" data-linenumber="496" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: inherit;" align="right" bgcolor="#f9d7dc">
496
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<td class="new_line diff-line-num old" data-linenumber="496" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: inherit;" align="right" bgcolor="#f9d7dc">
 
</td>
<td class="line_content old" style="padding: inherit;" bgcolor="#fbe9eb"><pre style='display: block; font-size: 0.8125rem; color: #303030; position: relative; font-family: "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; word-break: break-all; word-wrap: break-word; background-color: inherit; border-radius: 2px; margin: 0; padding: 0; border: inherit solid #dbdbdb;'>-<span id="LC496" class="line" lang="javascript">               <span class="nx">ADDW</span><span class="p">(</span><span class="nx">c</span><span class="p">.</span><span class="nx">excep</span><span class="p">[</span><span class="nx">i</span><span class="p">]);</span></span>
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<td class="old_line diff-line-num new" data-linenumber="497" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: inherit;" align="right" bgcolor="#ddfbe6">
 
</td>
<td class="new_line diff-line-num new" data-linenumber="496" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: inherit;" align="right" bgcolor="#ddfbe6">
496
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<td class="line_content new" style="padding: inherit;" bgcolor="#ecfdf0"><pre style='display: block; font-size: 0.8125rem; color: #303030; position: relative; font-family: "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; word-break: break-all; word-wrap: break-word; background-color: inherit; border-radius: 2px; margin: 0; padding: 0; border: inherit solid #dbdbdb;'>+<span id="LC496" class="line" lang="javascript">               <span class="nx">ADDW</span><span class="p">(</span><span class="nx">c</span><span class="p">.</span><span class="nx">excep</span><span class="p">[</span><span class="nx">i</span><span class="p">][</span><span class="mi" style="color: #099;">0</span><span class="p">]);</span> <span class="c1" style="color: #998; font-style: italic;">// the posting thread</span></span>
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<td class="old_line diff-line-num new" data-linenumber="497" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: inherit;" align="right" bgcolor="#ddfbe6">
 
</td>
<td class="new_line diff-line-num new" data-linenumber="497" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: inherit;" align="right" bgcolor="#ddfbe6">
497
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<td class="line_content new" style="padding: inherit;" bgcolor="#ecfdf0"><pre style='display: block; font-size: 0.8125rem; color: #303030; position: relative; font-family: "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; word-break: break-all; word-wrap: break-word; background-color: inherit; border-radius: 2px; margin: 0; padding: 0; border: inherit solid #dbdbdb;'>+<span id="LC497" class="line" lang="javascript">               <span class="nx">ADDW</span><span class="p">(</span><span class="nx">c</span><span class="p">.</span><span class="nx">excep</span><span class="p">[</span><span class="nx">i</span><span class="p">][</span><span class="mi" style="color: #099;">1</span><span class="p">]);</span> <span class="c1" style="color: #998; font-style: italic;">// the exception</span></span>
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497
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<td class="new_line diff-line-num" data-linenumber="498" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: inherit;" align="right" bgcolor="#fafafa">
498
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<td class="line_content" style="padding: inherit;"><pre style='display: block; font-size: 0.8125rem; color: #303030; position: relative; font-family: "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; word-break: break-all; word-wrap: break-word; background-color: inherit; border-radius: 2px; margin: 0; padding: 0; border: inherit solid #dbdbdb;'> <span id="LC498" class="line" lang="javascript">           <span class="p">}</span></span>
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<td class="old_line diff-line-num" data-linenumber="498" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: inherit;" align="right" bgcolor="#fafafa">
498
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<td class="new_line diff-line-num" data-linenumber="499" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: inherit;" align="right" bgcolor="#fafafa">
499
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<td class="line_content" style="padding: inherit;"><pre style='display: block; font-size: 0.8125rem; color: #303030; position: relative; font-family: "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; word-break: break-all; word-wrap: break-word; background-color: inherit; border-radius: 2px; margin: 0; padding: 0; border: inherit solid #dbdbdb;'> <span id="LC499" class="line" lang="javascript">            <span class="p">}</span> <span class="k" style="font-weight: 600;">else</span> <span class="k" style="font-weight: 600;">if</span><span class="p">(</span><span class="nx">c</span> <span class="k" style="font-weight: 600;">instanceof</span> <span class="nx">h$Transaction</span><span class="p">)</span> <span class="p">{</span></span>
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<td class="old_line diff-line-num" data-linenumber="499" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: inherit;" align="right" bgcolor="#fafafa">
499
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<td class="new_line diff-line-num" data-linenumber="500" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: inherit;" align="right" bgcolor="#fafafa">
500
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<td class="line_content" style="padding: inherit;"><pre style='display: block; font-size: 0.8125rem; color: #303030; position: relative; font-family: "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; word-break: break-all; word-wrap: break-word; background-color: inherit; border-radius: 2px; margin: 0; padding: 0; border: inherit solid #dbdbdb;'> <span id="LC500" class="line" lang="javascript">                <span class="c1" style="color: #998; font-style: italic;">// - the accessed TVar values don't need to be marked</span></span>
</pre></td>
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