[Bug fortran/80467] Function Without Arguments Fails to Generate Error When Declared Later

[dominiq at lps dot ens.fr]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80467

--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> I agree that the code is invalid, and it is the user's responsibility. 
> However, I don't think an internal compiler error is appropriate in this case. 

AFAICT you get the internal error only with compilers configured with 
--enable-checking=yes.

> An actual error would be preferable.

Agreed, but as an enhancement with a low priority.