[Bug fortran/121379] New: MODULE attribute required for submodule procedure with interface in parent module.

[pault at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121379

            Bug ID: 121379
           Summary: MODULE attribute required for submodule procedure with
                    interface in parent module.
           Product: gcc
           Version: 16.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: pault at gcc dot gnu.org
  Target Milestone: ---

Found in the course of preparing the patch for the generic statement (Thanks
Harald):

module m
  interface g
  real module function realg (arg1, arg2)
    real, intent(in) :: arg1, arg2
  end
  end interface
contains
end module m

submodule (m) subm
contains
  real function realg (arg1, arg2)          ! gfortran happily compiles....
!  real module function realg (arg1, arg2)  ! but other brands require this
    real, intent(in) :: arg1, arg2
    realg = arg1 + arg2
  end
end

Paul