https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119502
--- Comment #4 from anlauf at gcc dot gnu.org --- (In reply to Jerry DeLisle from comment #3) > I am curious what other compilers do with this. > > program foo > integer :: iun = -1 > open (iun) > write(iun,*) "This is a test." > close (iun) > end Well, here you go: NAG: Runtime Error: pr119502.f90, line 3: Unit number -1 out of range Program terminated by fatal I/O error Abort Intel: This is a test. Nvidia (nvfortran) and AMD flang: FIO-F-212/OPEN/unit=-1/invalid unit number. In source file pr119502.f90, at line number 3
