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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - bugpoint does not respect the "Alias must point to a definition" rule"
href="http://llvm.org/bugs/show_bug.cgi?id=20788">20788</a>
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<th>Summary</th>
<td>bugpoint does not respect the "Alias must point to a definition" rule
</td>
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<th>Product</th>
<td>tools
</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>bugpoint
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>hfinkel@anl.gov
</td>
</tr>
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<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
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<th>Classification</th>
<td>Unclassified
</td>
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<p>
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<pre>bugpoint does not correctly handle aliases; specifically, when it removes
definitions from a module, it leaves aliases pointing to the, now external,
reference. This causes additional failures in the verifier here:
Assert1(!GV->isDeclaration(), "Alias must point to a definition", &GA);
This seems to happen from code (I think):
$ grep -r 'setInitializer(nullptr)' tools/bugpoint
tools/bugpoint/CrashDebugger.cpp: I->setInitializer(nullptr);
tools/bugpoint/CrashDebugger.cpp: I->setInitializer(nullptr);
tools/bugpoint/ExtractFunction.cpp: I->setInitializer(nullptr); // Delete
the initializer to make it external
tools/bugpoint/ExtractFunction.cpp: GV->setInitializer(nullptr);
I'm not sure exactly what the correct fix is.</pre>
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