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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - analyzer misses out of bounds string access"
href="http://llvm.org/bugs/show_bug.cgi?id=17579">17579</a>
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<th>Summary</th>
<td>analyzer misses out of bounds string access
</td>
</tr>
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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>Linux
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
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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>Static Analyzer
</td>
</tr>
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<th>Assignee</th>
<td>kremenek@apple.com
</td>
</tr>
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<th>Reporter</th>
<td>nlewycky@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>This is reduced from a bug we just caught in glibc. Testcase:
#include <string.h>
#include <stdlib.h>
void dl_fatal_printf(const char *) __attribute__((noreturn));
extern char *l_name;
void foo(char *dsoname) {
size_t len = strlen (dsoname);
char *copy = malloc (len);
if (copy == NULL) dl_fatal_printf ("out of memory\n");
l_name = memcpy (copy, dsoname, len);
}
CSA doesn't catch this with -analyzer-checker=alpha,core,security,unix .</pre>
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