dccd061302
``` template <typename T> struct A { A() {} int value = 0; }; template <typename Value> struct B { static A<int> a; }; template <typename Value> A<int> B<Value>::a; inline int foo() { return B<int>::a.value; } ``` ``` clang++ -c -fno-pic a.cc -o weak.o g++ -c -fno-pic a.cc -o unique.o # --enable-gnu-unique-object # Duplicate symbol error. In postParse, we do not check `sym.binding` ld.lld -e 0 weak.o unique.o ``` Mixing GCC and Clang object files in this case is not ideal. .bss._ZGVN1BIiE1aE has different COMDAT groups. It appears to work in practice because the guard variable prevents harm due to double initialization. For the linker, we just stick with the rule that a weak binding does not cause "duplicate symbol" errors. Close https://github.com/llvm/llvm-project/issues/58232 Differential Revision: https://reviews.llvm.org/D136381 (cherry picked from commit 0051b6bb78772b0658f28e5f31ddf91c1589aab5) |
||
---|---|---|
.. | ||
COFF | ||
ELF | ||
MachO | ||
MinGW | ||
wasm | ||
CMakeLists.txt | ||
lit.cfg.py | ||
lit.site.cfg.py.in |