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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Missing -Wuninitialized warning with some gotos"
href="https://bugs.llvm.org/show_bug.cgi?id=43717">43717</a>
</td>
</tr>
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<th>Summary</th>
<td>Missing -Wuninitialized warning with some gotos
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux
</td>
</tr>
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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>
</tr>
<tr>
<th>Component</th>
<td>-New Bugs
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>simon.marchi@polymtl.ca
</td>
</tr>
<tr>
<th>CC</th>
<td>htmldeveloper@gmail.com, llvm-bugs@lists.llvm.org, neeilans@live.com, richard-llvm@metafoo.co.uk
</td>
</tr></table>
<p>
<div>
<pre>Using the following
```
#include <stdlib.h>
#include <stdio.h>
int foo;
int main() {
int status;
if (foo) {
goto error;
}
goto end;
error:
status = 1;
end:
if (foo) {
status = 1;
}
return status;
}
```
Unless I'm missing something, I think there's a quite obvious path (when foo is
false) where status is used without being initialized. However, I don't get a
warning with:
$ clang-10 ~/build/babeltrace-clang/test.c -Werror -Wuninitialized
-Wsometimes-uninitialized
Removing either condition gives me -Wsometimes-uninitialized diagnostic, as
expected.
$ clang-10 --version
clang version 10.0.0-svn375132-1~exp1+0~20191017164644.1263~1.gbpd72b70 (trunk)
Target: x86_64-pc-linux-gnu
Thread model: posix
InstalledDir: /usr/bin</pre>
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