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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - clang-3.9 miscompiles glslang unit test when optimizing"
href="https://llvm.org/bugs/show_bug.cgi?id=30602">30602</a>
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<th>Summary</th>
<td>clang-3.9 miscompiles glslang unit test when optimizing
</td>
</tr>
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<th>Product</th>
<td>new-bugs
</td>
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<th>Version</th>
<td>3.9
</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>
</tr>
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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>new bugs
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>jfroy@google.com
</td>
</tr>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>clang 3.9 miscompiles the hlsl.forLoop.frag test of the glslang project when
optmizations are enabled. I haven't isolated the specific pass that's causing a
problem, and as a newbie to the clang/llvm community this is kind of daunting.
See <a href="https://github.com/KhronosGroup/glslang/issues/511">https://github.com/KhronosGroup/glslang/issues/511</a>.
Steps to reproduce:
git clone <a href="https://github.com/KhronosGroup/glslang.git">https://github.com/KhronosGroup/glslang.git</a>
cd glslang
git clone <a href="https://github.com/google/googletest.git">https://github.com/google/googletest.git</a> External/googletest
mkdir build
cd build
cmake -DCMAKE_BUILD_TYPE=Release ../
cmake --build .
ctest
This is a regression from clang 3.8.
I'm happy to help gather more data to root cause this with some mentoring.</pre>
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