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! { dg-do run }

! { dg-options "-fdump-tree-original" }

!

! PR fortran/41298

!

! Check that c_null_ptr default initializer is really applied

module m

  use iso_c_binding

  type, public :: fgsl_file

     type(c_ptr)    :: gsl_file = c_null_ptr

     type(c_funptr) :: gsl_func = c_null_funptr

     type(c_ptr)    :: NIptr

     type(c_funptr) :: NIfunptr

  end type fgsl_file

contains

  subroutine sub(aaa,bbb)

    type(fgsl_file), intent(out)   :: aaa

    type(fgsl_file), intent(inout) :: bbb

  end subroutine

  subroutine proc() bind(C)

  end subroutine proc

end module m

program test

  use m

  implicit none

  type(fgsl_file) :: file, noreinit

  integer, target :: tgt

  call sub(file, noreinit)

  if(c_associated(file%gsl_file)) call abort()

  if(c_associated(file%gsl_func)) call abort()

  file%gsl_file = c_loc(tgt)

  file%gsl_func = c_funloc(proc)

  call sub(file, noreinit)

  if(c_associated(file%gsl_file)) call abort()

  if(c_associated(file%gsl_func)) call abort()

end program test

! { dg-final { scan-tree-dump-times "gsl_file = 0B" 1 "original" } }

! { dg-final { scan-tree-dump-times "gsl_func = 0B" 1 "original" } }

! { dg-final { scan-tree-dump-times "NIptr = 0B"    0 "original" } }

! { dg-final { scan-tree-dump-times "NIfunptr = 0B" 0 "original" } }

! { dg-final { scan-tree-dump-times "bbb =" 0 "original" } }

! { dg-final { cleanup-tree-dump "original" } }

! { dg-final { cleanup-modules "m" } }