[Bug fortran/95980] ICE in get_unique_type_string, at fortran/class.c:485

[anlauf at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95980

--- Comment #7 from anlauf at gcc dot gnu.org ---
(In reply to Dominique d'Humieres from comment #5)
> AFAICT the patch fixes the ICE for z2.f90, but not for z1.f90.

You're right.  I got lost in trying to work on too many PRs.

I attached a brute-force patch that makes gfortran reject z1.f90
without ICEing.

Can you confirm this, or is there possibly something left to handle?
I have the impression that there's a lot of bad things happening with
invalid input that is not always caught on x86_64.