[Bug c++/70528] [5/6 Regression] bogus error: constructor required before non-static data member

[trippels at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70528

--- Comment #6 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
(In reply to Patrick Palka from comment #5)
> If comment #1 should be accepted, then should this be accepted too?
> 
> template <class T, class U = decltype(T())>
> struct I {
> };
> 
> struct J {
>   struct K {
>     int First = J::N;
>   };
>   I<K> FunctionMDInfo;
>   static const int N = 0;
> };

Clang rejects both.