[Bug c++/72756] Using an enum as a constant expression via dot operator should not compile.

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=72756

--- Comment #7 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Note the paper that was acepted in the end is https://wg21.link/p2280 .