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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - dont emit -Wreturn-stack-address in single case"
href="https://bugs.llvm.org/show_bug.cgi?id=38569">38569</a>
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<th>Summary</th>
<td>dont emit -Wreturn-stack-address in single case
</td>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>trunk
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Linux
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>enhancement
</td>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>Frontend
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>ndesaulniers@google.com
</td>
</tr>
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<th>CC</th>
<td>llozano@chromium.org, llvm-bugs@lists.llvm.org, srhines@google.com
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<p>
<div>
<pre>From <a href="https://github.com/ClangBuiltLinux/linux/issues/24">https://github.com/ClangBuiltLinux/linux/issues/24</a>:
The Linux kernel uses the following construct often:
#define _THIS_IP_ ({ __label__ __here; __here: (unsigned long)&&__here; })
This produces -Wreturn-stack-address (in Clang 7+) for the label, but generates
the expected code.
I think we can detect returning the address of a label in a GNU-C-extension
statement expression, that has nothing between the label and the final
statement, and not emit the warning?</pre>
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