[Bug c++/123664] ICE in fold_convert_loc, at fold-const.cc when constexpr-initializing pointer-to-member-function in a template instantiation

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123664

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
This works for aarch64 and arm compilers. Trying to reduce it further to better
understand why it ICEs for x86_64 only.