[Bug c++/125414] ICE segfault on std::same_as in static_assert

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=125414

--- Comment #2 from Drea Pinski <pinskia at gcc dot gnu.org> ---
Created attachment 64528
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=64528&action=edit
Reduce testcase