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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [ubsan] object-size sanitizer complains about -O0 on clang-cl"
href="https://bugs.llvm.org/show_bug.cgi?id=43925">43925</a>
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<th>Summary</th>
<td>[ubsan] object-size sanitizer complains about -O0 on clang-cl
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<th>Product</th>
<td>new-bugs
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>PC
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<th>OS</th>
<td>Windows NT
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<th>Status</th>
<td>NEW
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<th>Severity</th>
<td>enhancement
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>new bugs
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>dmajor@mozilla.com
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<th>CC</th>
<td>htmldeveloper@gmail.com, llvm-bugs@lists.llvm.org, vsk@apple.com
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<pre>`OptLevel` here is null even when I pass -O2:
<a href="https://github.com/llvm/llvm-project/blame/941660299ac6d30919af9d943794a2ac516112fc/clang/lib/Driver/SanitizerArgs.cpp#L270">https://github.com/llvm/llvm-project/blame/941660299ac6d30919af9d943794a2ac516112fc/clang/lib/Driver/SanitizerArgs.cpp#L270</a>
I would guess that this comes from the clang-cl driver having its own style of
-O flags, for example it understands things like -Od but not -O3.</pre>
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