[Bug fortran/66545] ICE on using undefined parameter/variable values

["kargl at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66545

kargl at gcc dot gnu.org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |kargl at gcc dot gnu.org

--- Comment #4 from kargl at gcc dot gnu.org ---
(In reply to Thomas Koenig from comment #3)
> This fixes the complex part, the others need their own parts.
> 
> Index: primary.c
> ===================================================================
> --- primary.c   (Revision 224450)
> +++ primary.c   (Arbeitskopie)
> @@ -1254,6 +1254,13 @@ match_sym_complex_part (gfc_expr **result)
>        return MATCH_ERROR;
>      }
>  
> +  if (sym->value == NULL)
> +    {
> +      gfc_error ("PARAMETER %qs is used at %C before its definition "
> +                "is complete", sym->name);
> +      return MATCH_ERROR;
> +    }
> +
>    if (!gfc_numeric_ts (&sym->value->ts))
>      {
>        gfc_error ("Numeric PARAMETER required in complex constant at %C");

I have 

  if (!sym->value)
    goto error;

which leads to the same error.