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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - clang-cl will incorrectly warn on enum size"
href="https://bugs.llvm.org/show_bug.cgi?id=44532">44532</a>
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<th>Summary</th>
<td>clang-cl will incorrectly warn on enum size
</td>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>9.0
</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>Driver
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>tiagomacarios@gmail.com
</td>
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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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<pre>clang-cl will warn about enum representation on windows. On Linux, everything
works fine: <a href="https://godbolt.org/z/DpbxB3">https://godbolt.org/z/DpbxB3</a>
AFAIU as per the standard the enum will have the type needed to fit the member,
so I don't understand the warning.
<span class="quote">>clang-cl -c -std:c++17 -Weverything a.cpp</span >
a.cpp(3,5): warning: enumerator value is not representable in the underlying
type 'int' [-Wmicrosoft-enum-value]
e = 0xFFFFFFFFL
^
1 warning generated.
C:\Users\tiagoma\AppData\Local\Temp\temp>type a.cpp
enum
{
e = 0xFFFFFFFFL
};
<span class="quote">>clang-cl -c -std:c++17 -Weverything a.cpp</span >
a.cpp(3,5): warning: enumerator value is not representable in the underlying
type 'int' [-Wmicrosoft-enum-value]
e = 0xFFFFFFFFL
^
1 warning generated.</pre>
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