[Bug fortran/43969] [OOP] ALLOCATED() with polymorphic variables

["sfilippone at uniroma2 dot it" <gcc-bugzilla@gcc.gnu.org>]

------- Comment #5 from sfilippone at uniroma2 dot it  2010-05-15 11:33 -------
(In reply to comment #4)
> Turns out that fixing this one is completely trivial, once you actually have a
> look at it :)
> 
> The ALLOCATED intrinsic was just not adjusted to handle CLASS variables yet.
> The patch is as simple as this:
> 
> Index: gcc/fortran/trans-intrinsic.c
> ===================================================================
> --- gcc/fortran/trans-intrinsic.c       (revision 159389)
> +++ gcc/fortran/trans-intrinsic.c       (working copy)
> @@ -4529,6 +4529,8 @@ gfc_conv_allocated (gfc_se *se, gfc_expr *expr)
>      {
>        /* Allocatable scalar.  */
>        arg1se.want_pointer = 1;
> +      if (arg1->expr->ts.type == BT_CLASS)
> +       gfc_add_component_ref (arg1->expr, "$data");
>        gfc_conv_expr (&arg1se, arg1->expr);
>        tmp = arg1se.expr;
>      }
> 
> Thanks for the bug report, Salvatore.
> 
While we are at it, shouldn't the error message on ALLOCATE be  changed to
reflect the fact that not only arrays but also scalars might be allocatables? 
(see #2)
Salvatore 


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43969