https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97009
anlauf at gcc dot gnu.org changed: What |Removed |Added ---------------------------------------------------------------------------- Target Milestone|--- |9.4 Ever confirmed|0 |1 Known to fail| |11.0 Summary|Inlining with non-standard |[9/10/11 Regression] |selected_int_kind leads to |Inlining with non-standard |errors |selected_int_kind leads to | |errors Keywords| |wrong-code Last reconfirmed| |2020-09-10 Status|UNCONFIRMED |NEW Known to work| |8.4.1 Priority|P3 |P4 --- Comment #2 from anlauf at gcc dot gnu.org --- It appears to be a combination of inlining and optimizations that are present at -O2 but not at -O1. OK: gfc-11 pr97009.f90 -O1 -finline gfc-11 pr97009.f90 -O2 -fno-inline Not OK: gfc-11 pr97009.f90 -O2 -finline The output in the latter case appears to be random junk. But valgrind does not show anything for me, nor does ASAN. Could also be some ME issue.