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<base href="https://llvm.org/bugs/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - clang-cl doesn't consider __assume() when emitting [-Wreturn-type] warnings"
href="https://llvm.org/bugs/show_bug.cgi?id=29134">29134</a>
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<th>Summary</th>
<td>clang-cl doesn't consider __assume() when emitting [-Wreturn-type] warnings
</td>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>3.9
</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>
</tr>
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<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>C++
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>6yearold@gmail.com
</td>
</tr>
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<th>CC</th>
<td>dgregor@apple.com, llvm-bugs@lists.llvm.org
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>The code
int func2(int i) {
switch(i) {
case 1:
return 1;
case 2:
return 2;
default:
__assume(0);
}
}
int main(int p)
{
func2(2);
}
produces this warning:
tst.cpp(11,1): warning: control may reach end of non-void function
[-Wreturn-type]
}
^
while cl.exe is silent on that.
This is a problem when compiling with -Werror, because this warning gets turned
into a error and this leads to compilation failure.</pre>
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