https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95037
Bug ID: 95037 Summary: gfortran fails to compile a simple subroutine, issues an opaque message Product: gcc Version: 9.3.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: fortran Assignee: unassigned at gcc dot gnu.org Reporter: longb at cray dot com Target Milestone: --- > cat test.f90 subroutine my_random_seed_v (size, put, get) integer, optional :: size integer, optional :: put(1) integer, optional :: get(1) call random_seed (size, put, get) end subroutine my_random_seed_v Works with Cray compiler: > ftn -c test.f90 > module swap PrgEnv-cray PrgEnv-gnu Fails with gfortran: > gfortran -c test.f90 (null):0: confused by earlier errors, bailing out > gfortran --version GNU Fortran (GCC) 9.3.0 20200312 (Cray Inc.) Copyright (C) 2019 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. Original user was "confused" by the message, especially since there were no "earlier errors" output.