[Bug c++/124278] Accepts conflicting scoped/unscoped enum redeclaration

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=124278

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
MSVC rejects it like clang.
EDG accepts it like  GCC.