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<base href="http://llvm.org/bugs/" />
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<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - likely wrong code bug"
href="http://llvm.org/bugs/show_bug.cgi?id=17158">17158</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>likely wrong code bug
</td>
</tr>
<tr>
<th>Product</th>
<td>new-bugs
</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>
<tr>
<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>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>regehr@cs.utah.edu
</td>
</tr>
<tr>
<th>CC</th>
<td>chenyang@cs.utah.edu, llvmbugs@cs.uiuc.edu
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>regehr@john-home ~/z/reduce/r108 $ clang -O1 -w small.c ; ./a.out
1
regehr@john-home ~/z/reduce/r108 $ clang -O2 -w small.c ; ./a.out
0
regehr@john-home ~/z/reduce/r108 $ cat small.c
int printf(const char *, ...);
struct x0 {
int x1;
char x2;
};
struct x3 {
struct x0 x4;
char x5;
} x6;
int main() {
struct x3 x7 = { { 0, 0 }, 1 };
x6 = x7;
x7.x4.x2;
printf("%d\n", x6.x5);
return 0;
}
regehr@john-home ~/z/reduce/r108 $ clang -v
clang version 3.4 (trunk 190166)
Target: x86_64-unknown-linux-gnu
Thread model: posix
Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/4.7
Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/4.7.3
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.7
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.7.3
Selected GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.7</pre>
</div>
</p>
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