[Bug fortran/84867] Wrong code generated, except at -O0, with inappropriate Warning: iteration 1 invokes undefined behavior [-Waggressive-loop-optimizations]

[jiri.pittner@jh-inst.cas.cz]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84867

--- Comment #3 from jiri.pittner@jh-inst.cas.cz ---
Created attachment 43658
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43658&action=edit
similar buggy behavior without any compiler warning