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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 --- - clang crashes while compiling a specific file"
href="http://llvm.org/bugs/show_bug.cgi?id=15570">15570</a>
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<th>Summary</th>
<td>clang crashes while compiling a specific file
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
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<th>Version</th>
<td>3.2
</td>
</tr>
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<th>Hardware</th>
<td>PC
</td>
</tr>
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<th>OS</th>
<td>FreeBSD
</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>
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<th>Component</th>
<td>-New Bugs
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>avg@FreeBSD.org
</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>clang crashes while compiling a particular version of a particular file in
FreeBSD kernel source code.
Please see the attached file.
By looking at the resent changes to the file I've been able to determine that
the crash can be avoided if the following snippet in the code is commented out:
for (; rootrefs > 0; rootrefs--)
vrele(rootvp);
Perhaps this can give you some ideas as the complete file is rather large.
clang diagnostics:
1. <eof> parser at end of file
2. Per-module optimization passes
3. Running pass 'CallGraph Pass Manager' on module
'/usr/src/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vfsops.c'.
4. Running pass 'Loop Pass Manager' on function '@zfs_umount'
5. Running pass 'Unroll loops' on basic block '%for.body'
cc: error: unable to execute command: Segmentation fault (core dumped)
cc: error: clang frontend command failed due to signal (use -v to see
invocation)
FreeBSD clang version 3.2 (tags/RELEASE_32/final 170710) 20121221
Target: x86_64-unknown-freebsd10.0
Thread model: posix
cc: note: diagnostic msg: PLEASE submit a bug report to <a href="http://llvm.org/bugs/">http://llvm.org/bugs/</a>
and include the crash backtrace, preprocessed source, and associated run
script.
cc: note: diagnostic msg:
********************
PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
Preprocessed source(s) and associated run script(s) are located at:
cc: note: diagnostic msg: /tmp/zfs_vfsops-qeQkFI.c
cc: note: diagnostic msg: /tmp/zfs_vfsops-qeQkFI.sh</pre>
</div>
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