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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Clang-cl /Wall doesn't include all warnings"
href="https://bugs.llvm.org/show_bug.cgi?id=35206">35206</a>
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<th>Summary</th>
<td>Clang-cl /Wall doesn't include all warnings
</td>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>5.0
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Windows NT
</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>-New Bugs
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>jvapen@gmail.com
</td>
</tr>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
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<p>
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<pre>When one looks at the documentation of MSVC for the warnings, it contains
several warning levels /W0-/W4 + /Wall
<a href="https://msdn.microsoft.com/en-us/library/thxezb7y.aspx">https://msdn.microsoft.com/en-us/library/thxezb7y.aspx</a>
The documentation of clang-cl
<a href="https://clang.llvm.org/docs/UsersManual.html#clang-cl">https://clang.llvm.org/docs/UsersManual.html#clang-cl</a> indicates that it
supports the same warning levels by mapping:
/W1-/W3 to -Wall
/W4 and /Wall to -Wall -Wextra
It would be more logical that /Wall would be mapped to -Weverything as /Wall in
MSVC includes all warnings in MSVC, including several warnings its STL
violates.
-Weverything seems like the best fit for these.</pre>
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