[Bug c++/123977] [16 Regression] ICE on member function pointer in C++26

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123977

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Created attachment 63588
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=63588&action=edit
Reduced testcase without templates