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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - add with symbolic immediate hits llvm_unreachable when writing object file"
href="http://llvm.org/bugs/show_bug.cgi?id=18457">18457</a>
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<th>Summary</th>
<td>add with symbolic immediate hits llvm_unreachable when writing object file
</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
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<th>Component</th>
<td>Backend: ARM
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>joerg@NetBSD.org
</td>
</tr>
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<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
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<th>Classification</th>
<td>Unclassified
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<p>
<div>
<pre>Try something like
.Lfoo:
add r0, pc, #.Lfoo - .
This creates a fixup of type 134 (fixup_thumb_adr_pcrel_10).
This is folded correctly by MCExpr::EvaluateSymbolicAdd when called from
MCAssembler::evaluateFixup via line 360. At this point, the fixup has been
patched up, so that both symbols are removed and line 371 is hit. Ultimately,
the code decides that the fixup is still needed, but the object writer later
rejects it as unimplemented.</pre>
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