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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [LTO] Build of FreeBSD rtld(1) fails with undefined symbols"
href="https://llvm.org/bugs/show_bug.cgi?id=28179">28179</a>
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<th>Summary</th>
<td>[LTO] Build of FreeBSD rtld(1) fails with undefined symbols
</td>
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<th>Product</th>
<td>lld
</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>
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<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>All Bugs
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>davide@freebsd.org
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>$ sh blah.sh
undefined symbol: __stack_chk_fail
undefined symbol: __libc_sigaction in
./home/buildbot/obj/usr/home/buildbot/freebsd/tmp/usr/lib/libc_pic.a(abort.So)
$ ~/work/llvm/build-release/bin/llvm-nm -print-armap libc_pic.a |grep
__stack_chk_fail
__stack_chk_fail in stack_protector.So
---------------- T __stack_chk_fail
$ ~/work/llvm/build-release/bin/llvm-nm -print-armap libc_pic.a |grep
__libc_sigaction
U __libc_sigaction
U __libc_sigaction
U __libc_sigaction
U __libc_sigaction
U __libc_sigaction
---------------- T __libc_sigaction
U __libc_sigaction
U __libc_sigaction
Notably, __libc_sigaction doesn't show up in the armap.
It is defined in sigaction.So
sigaction.So:
U __libc_interposing
---------------- T __libc_sigaction
---------------- T __sigaction</pre>
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