https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100183
anlauf at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Ever confirmed|0 |1
Last reconfirmed| |2021-04-29
--- Comment #5 from anlauf at gcc dot gnu.org ---
(In reply to Iain Sandoe from comment #4)
> gcc304 is the Apple M1 machine. The GCC support there is highly
> experimental and not in master -- please note that there are known issues
> with the implementation.
>
> see : https://github.com/iains/gcc-darwin-arm64/issues
So rather a target than a fortran issue?