[Bug c++/78286] typename, type members and non-type members: code should be rejected, but it is not

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78286

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Now the struct is invalid anyways even without the main function but the C++
standard does not require a diagnostic :).