[Bug c++/107945] GCC accepts invalid program involving constexpr static data member of class template

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107945

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
ICC has the same behavior as GCC, though I don't know if it was EDG marking
this as an extension or not.