https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97589
--- Comment #27 from Toon Moene <toon at moene dot org> --- Yes, I am now convince this works (64 leads to stop 1, but 63 works). Note that I slightly changed the program today, to add a sync all before the forecasting loop, and adding one to the copy_local_to_global defined assignment procedure. Thanks for your perseverance.