https://bugs.llvm.org/show_bug.cgi?id=34068
Bug ID: 34068
Summary: [Modules TS] libc++ multiple symbol definitions
Product: clang
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: Modules
Assignee: unassignedclangb...@nondot.org
Reporter: bo...@codesynthesis.com
CC: dgre...@apple.com, llvm-bugs@lists.llvm.org
When trying to link two object files corresponding to two module implementation
units I get duplicate symbol errors like this:
libbutl/sha256.so.o:(.rodata+0x1a): multiple definition of
`std::__1::adopt_lock'
libbutl/base64.so.o:(.rodata+0x1a): first defined here
libbutl/sha256.so.o:(.rodata+0x18): multiple definition of
`std::__1::defer_lock'
libbutl/base64.so.o:(.rodata+0x18): first defined here
libbutl/sha256.so.o:(.rodata+0x19): multiple definition of
`std::__1::try_to_lock'
libbutl/base64.so.o:(.rodata+0x19): first defined here
libbutl/sha256.so.o:(.rodata+0x1b): multiple definition of
`std::__1::placeholders::_1'
libbutl/sha256.so.o:(.rodata+0x10): multiple definition of
`std::__1::__find_detail::__ambiguous'
libbutl/base64.so.o:(.rodata+0x10): first defined here
libbutl/sha256.so.o:(.rodata+0x8): multiple definition of
`std::__1::__find_detail::__not_found'
libbutl/base64.so.o:(.rodata+0x8): first defined here
libbutl/sha256.so.o:(.rodata+0x1): multiple definition of
`std::__1::allocator_arg'
libbutl/base64.so.o:(.rodata+0x1): first defined here
libbutl/sha256.so.o:(.rodata+0x0): multiple definition of
`std::__1::piecewise_construct'
libbutl/base64.so.o:(.rodata+0x0): first defined here
Making a reproducer is quite tedious (modules are a real pain without good
build system support). But I could give a link to the sources as well as the
entire compilation log if that would be helpful.
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