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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - optimization complains invalid symbol redefinition"
href="https://bugs.llvm.org/show_bug.cgi?id=42242">42242</a>
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<th>Summary</th>
<td>optimization complains invalid symbol redefinition
</td>
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<th>Product</th>
<td>clang
</td>
</tr>
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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>
</tr>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>enhancement
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>C++
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>zhonghao@pku.org.cn
</td>
</tr>
<tr>
<th>CC</th>
<td>blitzrakete@gmail.com, dgregor@apple.com, erik.pilkington@gmail.com, llvm-bugs@lists.llvm.org, richard-llvm@metafoo.co.uk
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<p>
<div>
<pre>My clang is 9.0.0, and the code is:
void x();
void rgb2yuv16bit_mmx422_row();
void x()
{
rgb2yuv16bit_mmx422_row();
}
void rgb2yuv16bit_mmx422_row()
{
__asm__ __volatile__ (
"rgb2yuv16_422:\n"
);
}
clang accepts the code, but with following parameters:
clang -Os | clang -O3 | clang -O2 | clang++ -Os | clang++ -O3 | clang++ -O2 |
, it rejects the code:
error: invalid symbol redefinition
"rgb2yuv16_422:\n"
^
<inline asm>:1:2: note: instantiated into assembly here
rgb2yuv16_422:
^
1 error generated.</pre>
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