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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 - alpha.deadcode.UnreachableCode is confused by caller"
href="https://bugs.llvm.org/show_bug.cgi?id=37659">37659</a>
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<th>Summary</th>
<td>alpha.deadcode.UnreachableCode is confused by caller
</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>Linux
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>-New Bugs
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>abramo.bagnara@bugseng.com
</td>
</tr>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
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<p>
<div>
<pre>If the function where the dead code is placed is called the checker does not
report anything.
Here below we can see that the dead code is reported for function e (not
called), but not reported for identical function f (called by g).
$ cat p.c
int e() {
if (1) {
return 1;
}
return 2;
}
int f() {
if (1) {
return 3;
}
return 4;
}
void g() {
f();
}
$ clang-7 -cc1 -analyze -analyzer-checker=alpha.deadcode.UnreachableCode p.c
p.c:5:10: warning: This statement is never executed
return 2;
^
1 warning generated.</pre>
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</p>
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