[Bug fortran/93309] Wrong error about duplicate implicit none

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93309

--- Comment #5 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-9 branch has been updated by Tobias Burnus
<bur...@gcc.gnu.org>:

https://gcc.gnu.org/g:5c80a1bd426a4aeccff0da54ab80d93d7973590e

commit r9-8197-g5c80a1bd426a4aeccff0da54ab80d93d7973590e
Author: Tobias Burnus <tob...@codesourcery.com>
Date:   Mon Feb 3 11:48:17 2020 +0100

    Fortran] PR93309 – permit repeated 'implicit none(external)'

        Backported from mainline
        2020-01-21  Tobias Burnus  <tob...@codesourcery.com>

        PR fortran/93309
        * interface.c (gfc_procedure_use): Also check parent namespace for
        'implict none (external)'.
        * symbol.c (gfc_get_namespace): Don't set has_implicit_none_export
        to parent namespace's setting.

        Backported from mainline
        2020-01-21  Tobias Burnus  <tob...@codesourcery.com>

        PR fortran/93309
        * gfortran.dg/external_implicit_none_2.f90: New.