[Bug libstdc++/110572] ld.lld: error: duplicate symbol: std::type_info::operator==(std::type_info const&) const

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110572

--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
I would argue that the root cause is that Clang does not conform to the
platform ABI for mingw-w64, which requires __GXX_TYPEINFO_EQUALITY_INLINE=0 to
be defined.