On 08.03.23 15:55, Paul Richard Thomas via Fortran wrote:
As noted below, rnflow.f90 hangs with the unpatched mainline at -O3 but runs successfully at -O2.
I can confirm that.
I presume that this is a serious regression since it involves optimization? Which component should I post it against?
Probably against tree-optimization. If later analysis determines that it is something else, people will reassign it. This one probably calls for bisection. Regards Thomas