[Bug fortran/53945] New: Scalar element of assumed-shape dummy array not recognized as C interoperable

["townsend at astro dot wisc.edu" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53945

             Bug #: 53945
           Summary: Scalar element of assumed-shape dummy array not
                    recognized as C interoperable
    Classification: Unclassified
           Product: gcc
           Version: 4.7.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: townsend@astro.wisc.edu


(Reposting from an initial question in comp.lang.fortran):

I'm having trouble getting the following to compile with gfortran 4.7.2:

--SNIP--
program foo

  USE ISO_C_BINDING

  implicit none

contains

  subroutine bar (a)

    real, intent(in), target :: a(:,:)

    type(C_PTR) :: a_ptr

    a_ptr = C_LOC(a(1,1))

  end subroutine bar

end program foo
--SNIP--

The error message is:

Error: Assumed-shape array 'a' at (1) cannot be an argument to the
procedure 'c_loc' because it is not C interoperable

This isn't right; although the array 'a' is not
interoperable because it is assumed-shape (but not allocatable), the
*element* a(1,1) is a scalar and thus should be interoperable.

Looks like the same problem as 50269, in a slightly different context.