[PR fortran/71862] Patch

[Paul Richard Thomas]

Hi Steve,

It looks good to me. OK to commit for as far back as you have a mind to go.

Cheers

Paul

On 22 July 2016 at 21:52, Steve Kargl <sgk@troutmask.apl.washington.edu> wrote:
> I intend to commit the following patch and close the
> PR in approximate 6.283 hours.
>
> 2016-07-22  Steven G. Kargl  <kargl@gcc.gnu.org>
>
>         PR fortran/71862
>         * class.c: Remove assert.  Iterate over component only if non-null.
>
>
> 2016-07-22  Steven G. Kargl  <kargl@gcc.gnu.org>
>
>         PR fortran/71862
>         * gfortran.dg/pr71862.f90: New test.
>
> Index: gcc/fortran/class.c
> ===================================================================
> --- gcc/fortran/class.c (revision 238665)
> +++ gcc/fortran/class.c (working copy)
> @@ -238,12 +238,14 @@ gfc_add_component_ref (gfc_expr *e, cons
>      /* Avoid losing memory.  */
>      gfc_free_ref_list (*tail);
>    c = gfc_find_component (derived, name, true, true, tail);
> -  gcc_assert (c);
> -  for (ref = *tail; ref->next; ref = ref->next)
> -    ;
> -  ref->next = next;
> -  if (!next)
> -    e->ts = c->ts;
> +
> +  if (c) {
> +    for (ref = *tail; ref->next; ref = ref->next)
> +      ;
> +    ref->next = next;
> +    if (!next)
> +      e->ts = c->ts;
> +  }
>  }
>
>
> Index: gcc/testsuite/gfortran.dg/pr71862.f90
> ===================================================================
> --- gcc/testsuite/gfortran.dg/pr71862.f90       (nonexistent)
> +++ gcc/testsuite/gfortran.dg/pr71862.f90       (working copy)
> @@ -0,0 +1,16 @@
> +! { dg-do compile }
> +program p
> +   type t
> +      integer :: n = 0
> +      integer, pointer :: q => null()
> +   end type
> +   type(t) :: x
> +   print *, associated(x%q)
> +   x = f()
> +   print *, associated(x%q)
> +contains
> +   function f() result (z)    ! { dg-error "must be dummy, allocatable or pointer" }
> +      class(t) :: z
> +      print *, associated(z%q)
> +   end
> +end
>
> --
> Steve



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