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! { dg-do run }

!

! PR39630: Fortran 2003: Procedure pointer components.

!

! test case taken from:

! http://groups.google.com/group/comp.lang.fortran/browse_thread/thread/4a827e8ced6efb0f/884b9eca6d7e6742?#884b9eca6d7e6742

! http://fortranwiki.org/fortran/show/proc_component_example

module proc_component_example

  type t

    real :: a

    procedure(print_int), pointer, &

                          nopass :: proc

  end type t

  abstract interface

    subroutine print_int (arg, lun)

      import

      type(t), intent(in) :: arg

      integer, intent(in) :: lun

    end subroutine print_int

  end interface

  integer :: calls = 0

contains

  subroutine print_me (arg, lun)

    type(t), intent(in) :: arg

    integer, intent(in) :: lun

    write (lun,*) arg%a

    calls = calls + 1

  end subroutine print_me

  subroutine print_my_square (arg, lun)

    type(t), intent(in) :: arg

    integer, intent(in) :: lun

    write (lun,*) arg%a**2

    calls = calls + 1

  end subroutine print_my_square

end module proc_component_example

program main

    use proc_component_example

    use iso_fortran_env, only : output_unit

    type(t) :: x

    x%a = 2.71828

    x%proc => print_me

    call x%proc(x, output_unit)

    x%proc => print_my_square

    call x%proc(x, output_unit)

    if (calls/=2) call abort

end program main

! { dg-final { cleanup-modules "proc_component_example" } }