| ! { dg-do run } |
| ! { dg-additional-sources c_f_pointer_logical_driver.c } |
| ! Verify that c_f_pointer exists for C logicals (_Bool). |
| module c_f_pointer_logical |
| use, intrinsic :: iso_c_binding, only: c_bool, c_f_pointer, c_ptr, c_int |
| contains |
| subroutine test_scalar(c_logical_ptr) bind(c) |
| type(c_ptr), value :: c_logical_ptr |
| logical(c_bool), pointer :: f03_logical_ptr |
| call c_f_pointer(c_logical_ptr, f03_logical_ptr) |
| |
| if(f03_logical_ptr .neqv. .true.) call abort () |
| end subroutine test_scalar |
| |
| subroutine test_array(c_logical_array, num_elems) bind(c) |
| type(c_ptr), value :: c_logical_array |
| integer(c_int), value :: num_elems |
| logical(c_bool), pointer, dimension(:) :: f03_logical_array |
| integer :: i |
| |
| call c_f_pointer(c_logical_array, f03_logical_array, (/ num_elems /)) |
| |
| ! Odd numbered locations are true (even numbered offsets in C) |
| do i = 1, num_elems, 2 |
| if(f03_logical_array(i) .neqv. .true.) call abort () |
| end do |
| |
| ! Even numbered locations are false. |
| do i = 2, num_elems, 2 |
| if(f03_logical_array(i) .neqv. .false.) call abort () |
| end do |
| end subroutine test_array |
| end module c_f_pointer_logical |