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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - UBSAN binary segfaults on correct UB-free test case."
href="https://bugs.llvm.org/show_bug.cgi?id=32646">32646</a>
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<th>Summary</th>
<td>UBSAN binary segfaults on correct UB-free test case.
</td>
</tr>
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<th>Product</th>
<td>libraries
</td>
</tr>
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<th>Version</th>
<td>trunk
</td>
</tr>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>All
</td>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>enhancement
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>Miscellaneous Instrumentation passes
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>babokin@gmail.com
</td>
</tr>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
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<div>
<pre>Created <span class=""><a href="attachment.cgi?id=18280" name="attach_18280" title="reproducer">attachment 18280</a> <a href="attachment.cgi?id=18280&action=edit" title="reproducer">[details]</a></span>
reproducer
I observe this bug quite frequently and it seems that this happens only on big
test cases. Also I failed to reduce the test case, which also supports my
assumption that this is a bug, which shows up only on big tests. Probably
int/size_t bug somewhere in UBSAN implementation?
The test itself is auto-generated test, which doesn't contain undefined
behavior.
Execute "run.sh" from attached archive - it will compile the test case and run
it.</pre>
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