gcc/testsuite/gfortran.dg/initialization_27.f90

   1 ! { dg-do run }
   2 !
   3 ! PR fortran/45489
   4 !
   5 ! Check that non-referenced variables are default
   6 ! initialized if they are INTENT(OUT) or function results.
   7 ! Only the latter (i.e. "x=f()") was not working before
   8 ! PR 45489 was fixed.
   9 !
  10 program test_init
  11   implicit none
  12   integer, target :: tgt
  13   type A
  14     integer, pointer:: p => null ()
  15     integer:: i=3
  16   end type A
  17   type(A):: x, y(3)
  18   x=f()
  19   if (associated(x%p) .or. x%i /= 3) call abort ()
  20   y(1)%p => tgt
  21   y%i = 99
  22   call sub1(3,y)
  23   if (associated(y(1)%p) .or. any(y(:)%i /= 3)) call abort ()
  24   y(1)%p => tgt
  25   y%i = 99
  26   call sub2(y)
  27   if (associated(y(1)%p) .or. any(y(:)%i /= 3)) call abort ()
  28 contains
  29  function f() result (fr)
  30     type(A):: fr
  31  end function f
  32  subroutine sub1(n,x)
  33    integer :: n
  34    type(A), intent(out) :: x(n:n+2)
  35  end subroutine sub1
  36  subroutine sub2(x)
  37    type(A), intent(out) :: x(:)
  38  end subroutine sub2
  39 end program test_init