1! { dg-do run }
2! { dg-additional-sources c_ptr_tests_driver.c }
3module c_ptr_tests
4  use, intrinsic :: iso_c_binding
5
6  ! TODO::
7  ! in order to be associated with a C address, 
8  ! the derived type needs to be C interoperable, 
9  ! which requires bind(c) and all fields interoperable.
10  type, bind(c) :: myType
11     type(c_ptr) :: myServices
12     type(c_funptr) :: mySetServices
13     type(c_ptr) :: myPort
14  end type myType
15
16  type, bind(c) :: f90Services
17     integer(c_int) :: compId
18     type(c_ptr) :: globalServices = c_null_ptr
19  end type f90Services
20
21  contains
22    
23    subroutine sub0(c_self, services) bind(c)
24      use, intrinsic :: iso_c_binding
25      implicit none
26      type(c_ptr), value :: c_self, services
27      type(myType), pointer :: self
28      type(f90Services), pointer :: localServices
29!      type(c_ptr) :: my_cptr 
30      type(c_ptr), save :: my_cptr = c_null_ptr
31
32      call c_f_pointer(c_self, self)
33      if(.not. associated(self)) then
34         print *, 'self is not associated'
35      end if
36      self%myServices = services
37
38      ! c_null_ptr is defined in iso_c_binding
39      my_cptr = c_null_ptr
40
41      ! get access to the local services obj from C
42      call c_f_pointer(self%myServices, localServices)
43    end subroutine sub0
44end module c_ptr_tests
45