[Bug fortran/71952] [Coarray, F2008] Rejects valid coarray access with array partref

[dominiq at lps dot ens.fr]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71952

--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Prior to 5.1, gfortran only supported single-image coarray execution.
> Possibly it's a regression for behavior with -fcoarray=single,
> but the more important case is -fcoarray=lib.

-fcoarray=lib -lcaf_single is supported since at least 4.9.3.

The "Sorry, coindexed access ..." errors have been implemented at revision
r221549.