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<base href="http://llvm.org/bugs/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - missed diagnostic for scanf %x with signed integer"
href="http://llvm.org/bugs/show_bug.cgi?id=22451">22451</a>
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<tr>
<th>Summary</th>
<td>missed diagnostic for scanf %x with signed integer
</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>
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<th>OS</th>
<td>Linux
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</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>danalbert@google.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>GCC emits a warning we don't:
$ cat foo.cpp
#include <stdio.h>
int main(int, char**) {
char buf[BUFSIZ];
int n;
sscanf(buf, "%x", &n);
return 0;
}
$ g++ -pedantic foo.cpp
foo.cpp: In function ‘int main(int, char**)’:
foo.cpp:6:23: warning: format ‘%x’ expects argument of type ‘unsigned int*’,
but argument 3 has type ‘int*’ [-Wformat=]
sscanf(buf, "%x", &n);
^
$ clang++ -Weverything -pedantic foo.cpp
$</pre>
</div>
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