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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Redundant warning when comparing values of different scoped enum types"
href="https://bugs.llvm.org/show_bug.cgi?id=32913">32913</a>
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<th>Summary</th>
<td>Redundant warning when comparing values of different scoped enum types
</td>
</tr>
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<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
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<th>Hardware</th>
<td>All
</td>
</tr>
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<th>OS</th>
<td>All
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>Frontend
</td>
</tr>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>rjmccall@apple.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
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<pre>harza:/tmp$ cat red.cpp
enum class UnscopedA { // Also happens if either (but not both) are unscoped
SomeCase
};
enum class ScopedA {
SomeOtherCase
};
bool compare(ScopedA a) {
return (a == UnscopedA::SomeCase);
}
harza:/tmp$ clang++ -std=c++11 -fsyntax-only red.cpp
red.cpp:10:13: warning: comparison of two values with different enumeration
types ('ScopedA' and 'UnscopedA') [-Wenum-compare]
return (a == UnscopedA::SomeCase);
~ ^ ~~~~~~~~~~~~~~~~~~~
red.cpp:10:13: error: invalid operands to binary expression ('ScopedA' and
'UnscopedA')
return (a == UnscopedA::SomeCase);
~ ^ ~~~~~~~~~~~~~~~~~~~
1 warning and 1 error generated.</pre>
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