Subversion Repositories openrisc_2011-10-31

! { dg-do compile }

! { dg-options "-fcray-pointer" }

!

! Test the fix for PR36703 in which the Cray pointer was not passed

! correctly so that the call to 'fun' at line 102 caused an ICE.

!

! Contributed by James van Buskirk on com.lang.fortran

! http://groups.google.com/group/comp.lang.fortran/msg/b600c081a3654936

! Reported by Tobias Burnus  

!

module funcs

   use ISO_C_BINDING           ! Added this USE statement

   implicit none

! Interface block for function program fptr will invoke

! to get the C_FUNPTR

   interface

      function get_proc(mess) bind(C,name='BlAh')

         use ISO_C_BINDING

         implicit none

         character(kind=C_CHAR) mess(*)

         type(C_FUNPTR) get_proc

      end function get_proc

   end interface

end module funcs

module other_fun

   use ISO_C_BINDING

   implicit none

   private

! Message to be returned by procedure pointed to

! by the C_FUNPTR

   character, allocatable, save :: my_message(:)

! Interface block for the procedure pointed to

! by the C_FUNPTR

   public abstract_fun

   abstract interface

      function abstract_fun(x)

         use ISO_C_BINDING

         import my_message

         implicit none

         integer(C_INT) x(:)

         character(size(my_message),C_CHAR) abstract_fun(size(x))

      end function abstract_fun

   end interface

   contains

! Procedure to store the message and get the C_FUNPTR

      function gp(message) bind(C,name='BlAh')

         character(kind=C_CHAR) message(*)

         type(C_FUNPTR) gp

         integer(C_INT64_T) i

         i = 1

         do while(message(i) /= C_NULL_CHAR)

            i = i+1

         end do

         allocate (my_message(i+1))      ! Added this allocation

         my_message = message(int(1,kind(i)):i-1)

         gp = get_funloc(make_mess,aux)

      end function gp

! Intermediate procedure to pass the function and get

! back the C_FUNPTR

      function get_funloc(x,y)

         procedure(abstract_fun) x

         type(C_FUNPTR) y

         external y

         type(C_FUNPTR) get_funloc

         get_funloc = y(x)

      end function get_funloc

! Procedure to convert the function to C_FUNPTR

      function aux(x)

         interface

            subroutine x() bind(C)

            end subroutine x

         end interface

         type(C_FUNPTR) aux

         aux = C_FUNLOC(x)

      end function aux

! Procedure pointed to by the C_FUNPTR

      function make_mess(x)

         integer(C_INT) x(:)

         character(size(my_message),C_CHAR) make_mess(size(x))

         make_mess = transfer(my_message,make_mess(1))

      end function make_mess

end module other_fun

program fptr

   use funcs

   use other_fun

   implicit none

   procedure(abstract_fun) fun        ! Removed INTERFACE

   pointer(p,fun)

   type(C_FUNPTR) fp

   fp = get_proc('Hello, world'//achar(0))

   p = transfer(fp,p)

   write(*,'(a)') fun([1,2,3])

end program fptr

! { dg-final { cleanup-modules "funcs other_fun" } }