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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 --- - alpha.deadcode.UnreachableCode false positive"
href="https://llvm.org/bugs/show_bug.cgi?id=31646">31646</a>
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</tr>
<tr>
<th>Summary</th>
<td>alpha.deadcode.UnreachableCode false positive
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
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<th>Version</th>
<td>4.0
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
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<th>OS</th>
<td>Linux
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>Static Analyzer
</td>
</tr>
<tr>
<th>Assignee</th>
<td>kremenek@apple.com
</td>
</tr>
<tr>
<th>Reporter</th>
<td>bagnara@cs.unipr.it
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=17842" name="attach_17842" title="Testcase allowing reproduction of the problem.">attachment 17842</a> <a href="attachment.cgi?id=17842&action=edit" title="Testcase allowing reproduction of the problem.">[details]</a></span>
Testcase allowing reproduction of the problem.
$ cat z.c
union U {
int a;
};
int foo(union U u) {
return u.a ? 1 : 0;
}
$ clang-4.0 -cc1 -analyze -analyzer-checker=alpha.deadcode.UnreachableCode z.c
z.c:6:20: warning: This statement is never executed
return u.a ? 1 : 0;
^
1 warning generated.
$ clang-4.0 --version
clang version 4.0.0-svn291446-1~exp1 (trunk)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /usr/bin
$</pre>
</div>
</p>
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