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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 --- - libunwind build fails because __builtin_unreachable is used"
href="https://llvm.org/bugs/show_bug.cgi?id=29153">29153</a>
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<th>Summary</th>
<td>libunwind build fails because __builtin_unreachable is used
</td>
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<th>Product</th>
<td>libraries
</td>
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<th>Version</th>
<td>trunk
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Linux
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>Backend: ARM
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>eclectic923@yahoo.com
</td>
</tr>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
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<th>Classification</th>
<td>Unclassified
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</tr></table>
<p>
<div>
<pre>I'm building libunwind-1.1 for Arm CortexA8 using gcc 4.3.3.
I get an error linking during libunwind build that __builtin_unreachable isn't
defined.
Basically, the this is bug-22198, except the offending source file is
src/arm/Gresume.c. I used the same solution as bug-22198. Replace
__builtin_unreachable with __builtin_trap.
This allows the library to build, and when I create a test application to use
the library it works.</pre>
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