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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Invalid results for -Wreturn-type, -Wcovered-switch-default dealing with enum class switch statements"
href="https://bugs.llvm.org/show_bug.cgi?id=33699">33699</a>
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<th>Summary</th>
<td>Invalid results for -Wreturn-type, -Wcovered-switch-default dealing with enum class switch statements
</td>
</tr>
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<th>Product</th>
<td>clang
</td>
</tr>
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<th>Version</th>
<td>trunk
</td>
</tr>
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<th>Hardware</th>
<td>PC
</td>
</tr>
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<th>OS</th>
<td>All
</td>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>-New Bugs
</td>
</tr>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>tamir.bahar@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
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</tr></table>
<p>
<div>
<pre>Overview:
When using an enum-class in a switch-statement, both -Wreturn-type and
-Wcovered-switch-default give erroneous results.
Steps To Reproduce:
Compile the following code with both the warnings enabled (-Wreturn-type
-Wcovered-switch-default
enum class A{x, y};
int f(A a) {
switch (a) {
case A::x: return 0;
case A::y: return 1;
}
}
int g(A a) {
switch (a) {
case A::x: return 0;
case A::y: return 1;
default: return 2;
}
}
Actual Results:
The following warning is displayed
warning: default label in switch which covers all enumeration values
[-Wcovered-switch-default]
default: return 2;
Expected Results:
There should be no warning for the default case in function g, and there should
be a return-type warning for function f.
Clang Version:
clang version 5.0.0 (trunk 307237)
Target: x86_64-unknown-linux-gnu
Thread model: posix</pre>
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