d8a36b00d1
Close https://github.com/llvm/llvm-project/issues/61940. The root cause is that clang will generate vtable as strong symbol now even if the corresponding class is defined in other module units. After I check the wording in Itanium ABI, I find this is not inconsistent. Itanium ABI 5.2.3 (https://itanium-cxx-abi.github.io/cxx-abi/abi.html#vague-vtable) says: > The virtual table for a class is emitted in the same object containing > the definition of its key function, i.e. the first non-pure virtual > function that is not inline at the point of class definition. So the current behavior is incorrect. This patch tries to address this. Also I think we need to do a similar change for MSVC ABI. But I don't find the formal wording. So I don't address this in this patch. Reviewed By: rjmccall, iains, dblaikie Differential Revision: https://reviews.llvm.org/D150023
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