https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83700
--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> --- > Thanks for this! For anyone looking at this, I'll be glad to assist > with parallel execution testing via -fcoarray=lib. AFAIR most of (if not all) the PRs are exposed via -fcoarray=lib -lcaf_single.