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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - VACOPY intrinsic misbehaves on PPC32"
href="http://llvm.org/bugs/show_bug.cgi?id=15286">15286</a>
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<th>Summary</th>
<td>VACOPY intrinsic misbehaves on PPC32
</td>
</tr>
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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>enhancement
</td>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>Backend: PowerPC
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>florob@babelmonkeys.de
</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>
<div>
<pre>Using va_copy on ppc32 with the SVR4 ABI currently causes strange behaviour
when using the copied list.
It appears the reason is that ppc32 needs custom lowering here.
While the default implementation only copies the pointer to the va_list struct
for ppc32 the actual struct needs to be copied (va_arg changes the struct).
I've fixed this in my local copy by stealing the AArch64 code and adapting it
to copy only 12 bytes.</pre>
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