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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - clang-cl: ignore /Zc:preprocessor"
href="https://bugs.llvm.org/show_bug.cgi?id=48220">48220</a>
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<th>Summary</th>
<td>clang-cl: ignore /Zc:preprocessor
</td>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>All
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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>lev.rumyantsev@gmail.com
</td>
</tr>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org, neeilans@live.com, richard-llvm@metafoo.co.uk
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<p>
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<pre>Visual C++ 2019 has new compiler option /Zc:preprocessor for ISO C++
conformance. As clang should be conforming by default, it should ignore them
instead of issuing a warning "argument unused during compilation".
<a href="https://devblogs.microsoft.com/cppblog/announcing-full-support-for-a-c-c-conformant-preprocessor-in-msvc/">https://devblogs.microsoft.com/cppblog/announcing-full-support-for-a-c-c-conformant-preprocessor-in-msvc/</a>
<a href="https://docs.microsoft.com/en-us/cpp/build/reference/zc-conformance?view=msvc-160">https://docs.microsoft.com/en-us/cpp/build/reference/zc-conformance?view=msvc-160</a></pre>
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