[Bug libstdc++/125359] [16/17 regression] undefined reference to `std::__cxx11::basic_string, std::allocator >::basic_string(std::__cxx11::basic_string, std::allocator >&&)' on mingw since r16-8510

[iains at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=125359

--- Comment #10 from Iain Sandoe <iains at gcc dot gnu.org> ---
I have a fix to be posted that works for Darin/macOS (which shows the same
symptoms as mingw)... I will attach it here later.

Note that there's an interaction between the target's handing of Weak, COMDAT
and so on.