https://bugs.llvm.org/show_bug.cgi?id=33285
Bug ID: 33285
Summary: Linkerror with __declspec(selectany) (multiple
definitions)
Product: clang
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: C++
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected]
I get error from the linker when compiling ChakraCore
https://github.com/Microsoft/ChakraCore
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
>>> 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
This template is defined here
https://github.com/Microsoft/ChakraCore/blob/master/lib/Common/DataStructures/UnitBitVector.h#L491
The reproduced is simple:
1. git clone [email protected]:Microsoft/ChakraCore.git
3. cd ChakraCore
2. ./build.sh -n --cxx=[pathToBuildDir]/bin/clang++
--cc=[pathToBuildDir]/bin/clang
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