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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - undefined symbol: __ubsan_handle_cfi_check_fail when linking a large rust project"
href="https://bugs.llvm.org/show_bug.cgi?id=38507">38507</a>
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<th>Summary</th>
<td>undefined symbol: __ubsan_handle_cfi_check_fail when linking a large rust project
</td>
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<th>Product</th>
<td>compiler-rt
</td>
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>All
</td>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>enhancement
</td>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>compiler-rt
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>tom@ritter.vg
</td>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org, vlad@tsyrklevich.net
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<div>
<pre>Created <span class=""><a href="attachment.cgi?id=20667" name="attach_20667" title="compilation command.txt">attachment 20667</a> <a href="attachment.cgi?id=20667&action=edit" title="compilation command.txt">[details]</a></span>
compilation command.txt
I'm compiling firefox and working on Control Flow Integrity. I hit this error
when linking something after a rust compilation. I reproduced it with a day
old clang.
clang version 8.0.0 (trunk) (llvm/trunk 339310)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /home/tom/Documents/moz/mozilla-unified-cfi-icall/clang/bin
ld.lld: error: undefined symbol: __ubsan_handle_cfi_check_fail
<span class="quote">>>> referenced by bzlib.c:508 (bzip2-1.0.6/bzlib.c:508)
>>> lto.tmp:(BZ2_bzDecompressInit)</span >
And 7 similar errors
The reproduction command is quite large, and the reproduction file even larger.
I've attached the command; and the reproduction tarfile (from --reproduce) is
at <a href="https://ritter.vg/misc/transient/rustlink.tar.gz">https://ritter.vg/misc/transient/rustlink.tar.gz</a>
Mozilla bug is <a href="https://bugzilla.mozilla.org/show_bug.cgi?id=1482140">https://bugzilla.mozilla.org/show_bug.cgi?id=1482140</a></pre>
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