gcc/testsuite/gfortran.dg/pr35983.f90

   1 ! { dg-do run }
   2 !
   3 ! PR fortran/35983
   4 ! C_LOC expanded to a NULL_PTR expr if called from a structure constructor
   5 !
   6 ! Contributed by François-Xavier Coudert
   7
   8 program main
   9    use ISO_C_BINDING
  10    implicit none
  11    type, bind(C) :: descr
  12       type(C_PTR) :: address
  13    end type descr
  14    type(descr) :: DD
  15    double precision, target :: buf(1)
  16    integer (C_INTPTR_T) :: i, j
  17
  18    buf = (/ 0 /)
  19    DD = descr(c_loc(buf))
  20    i = transfer (DD%address, 0_c_intptr_t)
  21    j = transfer (c_loc(buf), 0_c_intptr_t)
  22    if (any((/ i,j /) == 0_c_intptr_t)) call abort
  23    if (i /= j) call abort
  24 end program main