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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Coroutine use after free on Clang 12."
href="https://bugs.llvm.org/show_bug.cgi?id=50499">50499</a>
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<th>Summary</th>
<td>Coroutine use after free on Clang 12.
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>12.0
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<th>Hardware</th>
<td>PC
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<th>OS</th>
<td>All
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<th>Status</th>
<td>NEW
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<th>Severity</th>
<td>enhancement
</td>
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>C++2a
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>z.zoelec2@gmail.com
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<th>CC</th>
<td>blitzrakete@gmail.com, erik.pilkington@gmail.com, llvm-bugs@lists.llvm.org, richard-llvm@metafoo.co.uk
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<pre>Starting with Clang 12, the address sanitizers fail because of a use-after-free
any time `get_return_object` returns something that is not the parent object
and the parent object is not empty. Here's a reproducer:
<a href="https://godbolt.org/z/6Gfv3xG9o">https://godbolt.org/z/6Gfv3xG9o</a>
Refs <a href="https://reviews.llvm.org/D103196">https://reviews.llvm.org/D103196</a> where this came up.</pre>
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