https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78881
Jerry DeLisle <jvdelisle at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|RESOLVED |REOPENED Resolution|FIXED |--- --- Comment #16 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> --- (In reply to Rainer Orth from comment #15) Can you change line: if (imsg.ne."End of record") call abort to: if (imsg.ne."End of record") print *, imsg and lets see what its saying. My guess is I may need to initialize something before calling the child I/O procedure.