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From: "burnus at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/114283] New: [OpenMP] Dummy procedures/proc pointers
 and 'defaultmap', 'default', 'firstprivate' etc.
Date: Fri, 08 Mar 2024 13:00:30 +0000
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X-Bugzilla-Product: gcc
X-Bugzilla-Component: fortran
X-Bugzilla-Version: 14.0
X-Bugzilla-Keywords: openmp
X-Bugzilla-Severity: normal
X-Bugzilla-Who: burnus at gcc dot gnu.org
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D114283

            Bug ID: 114283
           Summary: [OpenMP] Dummy procedures/proc pointers and
                    'defaultmap', 'default', 'firstprivate' etc.
           Product: gcc
           Version: 14.0
            Status: UNCONFIRMED
          Keywords: openmp
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: burnus at gcc dot gnu.org
  Target Milestone: ---

See also OpenMP specification Issue #3823 [and slightly related PR 114282].

There are two cases:

(A) Dummy procedures

IMHO those aren't variables and gfortran also rejects them when used in
firstprivate, map, shared etc. ("Object 'f1' is not a variable").

However, gfortran does complain with 'default(none)':
   Error: 'f1' not specified in enclosing 'target'

Note: 'default(none)' does not diagnose it.
EXPECTED: There is no diagnosis for 'defaultmap(none)'.


(B) Procedure pointers

Here it is unclear whether it should be regarded as variable or not; gfortr=
an
treats those as variables.

Depends on OpenMP specification Issue #3823.

It seems as if handling it as variable, but using 'firstprivate' as default=
 for
implicit mapping makes most sense. =E2=80=93 But also treating it as non-va=
riable would
make sense.=