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<base href="https://bugs.llvm.org/">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - warn_unused_result and cast to void"
href="https://bugs.llvm.org/show_bug.cgi?id=51228">51228</a>
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<th>Summary</th>
<td>warn_unused_result and cast to void
</td>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>trunk
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>All
</td>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>enhancement
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>C
</td>
</tr>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>ndesaulniers@google.com
</td>
</tr>
<tr>
<th>CC</th>
<td>aaron@aaronballman.com, blitzrakete@gmail.com, dgregor@apple.com, erik.pilkington@gmail.com, isanbard@gmail.com, llvm-bugs@lists.llvm.org, richard-llvm@metafoo.co.uk
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<p>
<div>
<pre>$ cat foo.c
__attribute__((warn_unused_result))
int foo(void);
void bar(void) {
(void)foo(); // cast result to void
}
$ gcc foo.c
warning: ignoring return value of 'foo' declared with attribute
'warn_unused_result' [-Wunused-result]
9 | (void)foo(); // cast result to void
| ^~~~~
$ clang foo.c
$</pre>
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