[Bug c++/71569] [6 regression] Crash: External definition of template member from template struct

[jason at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71569

--- Comment #13 from Jason Merrill <jason at gcc dot gnu.org> ---
(In reply to Oliver Tale-Yazdi from comment #6)
> I also need to point out that >= 5.1 accepts weird (invalid?) Code

Fixed as well (for 7.4/8).