[Bug c++/77911] Comparing function pointers in a constexpr function can produce an error.

[yhueotnk at pokemail dot net]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77911

--- Comment #1 from Dr Hilbert Swan <yhueotnk at pokemail dot net> ---
Created attachment 39777
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=39777&action=edit
Version that compiles.