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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - IRMover duplicates global variable !dbg attachments"
href="https://llvm.org/bugs/show_bug.cgi?id=31012">31012</a>
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<th>Summary</th>
<td>IRMover duplicates global variable !dbg attachments
</td>
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<tr>
<th>Product</th>
<td>libraries
</td>
</tr>
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<th>Version</th>
<td>trunk
</td>
</tr>
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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>Linker
</td>
</tr>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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</tr>
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<th>Reporter</th>
<td>aprantl@apple.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
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</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=17585" name="attach_17585" title="test case with a global variable">attachment 17585</a> <a href="attachment.cgi?id=17585&action=edit" title="test case with a global variable">[details]</a></span>
test case with a global variable
To reproduce, copy the attached testcase to test/Linker or just run it through
llvm-link with any other module as a second input.
The global object g
<span class="quote">> @g = common global i32 0, align 4, !dbg !0</span >
will first be materialized with a !dbg attachement. Later, IRMover will invoke
linkGlobalValueBody() which calls GlobalObject::copyMetadata() a second time,
thus duplicating the !dbg attachment and creating an object g
<span class="quote">> @g = common global i32 0, align 4, !dbg !0, !dbg 0</span >
with a duplicate !dbg attachment.</pre>
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</p>
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