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<base href="https://llvm.org/bugs/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW " title="NEW --- - crash in LICM" href="https://urldefense.proofpoint.com/v2/url?u=https-3A__llvm.org_bugs_show-5Fbug.cgi-3Fid-3D23608&d=AwMBaQ&c=8hUWFZcy2Z-Za5rBPlktOQ&r=pF93YEPyB-J_PERP4DUZOJDzFVX5ZQ57vQk33wu0vio&m=xDKhmh87f8Xx6pjDnsXKns0XmRayk_cQWPrEz-Atvm4&s=CuKETPw5RRR9757oeZR1yAhaqyqndqweIf4QpCeIhSU&e=">23608</a>
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<th>Summary</th>
<td>crash in LICM
</td>
</tr>
<tr>
<th>Product</th>
<td>libraries
</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>All
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>Loop Optimizer
</td>
</tr>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<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>C testcase:
typedef struct { int f_iblock; } PyFrameObject;
PyFrameObject *a;
void fn1() {
void *b[] = {&&TARGET_LOAD_CLASSDEREF, &&_unknown_opcode};
TARGET_LOAD_CLASSDEREF:
goto * 0;
_unknown_opcode:
while (a->f_iblock)
;
}
$ ./clang a.c -O1 -fsanitize=memory -fsanitize-memory-track-origins=2
[...]
1. <eof> parser at end of file
2. Per-module optimization passes
3. Running pass 'Function Pass Manager' on module 'a.c'.
4. Running pass 'Loop Pass Manager' on function '@fn1'
5. Running pass 'Loop Invariant Code Motion' on basic block '%1'</pre>
</div>
</p>
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