https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83057
anlauf at gcc dot gnu.org changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution|--- |FIXED --- Comment #7 from anlauf at gcc dot gnu.org --- The case with NEWUNIT= has been fixed. I do not see a need to give a warning for open(20) except for e.g. -pedantic, but if you feel differently, please reopen.