[Bug c++/86183] Scoped enumeration instantiated even if not required

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86183

--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
The code is valid. It should not give an error, because the definition of the
scoped enumeration type should be instantiated by the implicit instantiation of
the class template. I changed the status to NEW and set the keyword
rejects-valid, I wouldn't have done that if it was invalid.