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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Linkerror with __declspec(selectany) (multiple definitions)"
href="https://bugs.llvm.org/show_bug.cgi?id=33285">33285</a>
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<th>Summary</th>
<td>Linkerror with __declspec(selectany) (multiple definitions)
</td>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>trunk
</td>
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<th>Hardware</th>
<td>PC
</td>
</tr>
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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>enhancement
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>C++
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>piotr.padlewski@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>dgregor@apple.com, llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>I get error from the linker when compiling ChakraCore
<a href="https://github.com/Microsoft/ChakraCore">https://github.com/Microsoft/ChakraCore</a>
with clang trunk. I happen with ld.gold and ld.lld. Surprisingly it doesn't
happen when compiling with clang-3.8, so clearly there is a regression.
The link error is:
/usr/bin/ld: error: duplicate symbol: BVUnitT<unsigned long>::ShiftValue
<span class="quote">>>> defined at /home/prazek/devirtualization-results/ChakraCore/bin/GCStress/GCStress.cpp
>>> bin/GCStress/CMakeFiles/GCStress.dir/GCStress.cpp.o:(BVUnitT<unsigned long>::ShiftValue)
>>> defined at /home/prazek/devirtualization-results/ChakraCore/lib/Common/Memory/HeapAllocator.cpp
>>> HeapAllocator.cpp.o:(.rodata+0x4) in archive lib/libChakraCoreStatic.a</span >
This template is defined here
<a href="https://github.com/Microsoft/ChakraCore/blob/master/lib/Common/DataStructures/UnitBitVector.h#L491">https://github.com/Microsoft/ChakraCore/blob/master/lib/Common/DataStructures/UnitBitVector.h#L491</a>
The reproduced is simple:
1. git clone <a href="mailto:git@github.com">git@github.com</a>:Microsoft/ChakraCore.git
3. cd ChakraCore
2. ./build.sh -n --cxx=[pathToBuildDir]/bin/clang++
--cc=[pathToBuildDir]/bin/clang</pre>
</div>
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