https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110572
--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> --- N.B. this can be reproduced without clang, just by using -std=c++20 -static-libstdc++ /usr/bin/x86_64-w64-mingw32-ld: /home/jwakely/gcc/mingw/lib/gcc/x86_64-w64-mingw32/13.0.1/../../../../x86_64-w64-mingw32/lib/../lib/libstdc++.a(tinfo.o): in function `std::type_info::operator==(std::type_info const&) const': /home/jwakely/src/gcc/build-mingw64/x86_64-w64-mingw32/libstdc++-v3/libsupc++/../../../../gcc/libstdc++-v3/libsupc++/tinfo.cc:61: multiple definition of `std::type_info::operator==(std::type_info const&) const'; /tmp/ccmMqprE.o:/home/jwakely/gcc/mingw/x86_64-w64-mingw32/include/c++/13.0.1/typeinfo:194: first defined here collect2: error: ld returned 1 exit status
