[Bug tree-optimization/43528] ICE: in tree_low_cst, at tree.c:6198 with -mms-bitfields at x86_64-linux

[rguenth at gcc dot gnu dot org]

------- Comment #10 from rguenth at gcc dot gnu dot org  2010-03-27 12:54 -------
(In reply to comment #9)
> This patch also works:
> 
> Index: stor-layout.c
> ===================================================================
> --- stor-layout.c       (revision 157756)
> +++ stor-layout.c       (working copy)
> @@ -1346,11 +1346,12 @@ place_field (record_layout_info rli, tre
>              until we see a bitfield (and come by here again) we just skip
>              calculating it.  */
>           if (DECL_SIZE (field) != NULL
> -             && host_integerp (TYPE_SIZE (TREE_TYPE (field)), 0)
> -             && host_integerp (DECL_SIZE (field), 0))
> +             && host_integerp (TYPE_SIZE (TREE_TYPE (field)), 1)
> +             && host_integerp (DECL_SIZE (field), 1))
>             {
> -             HOST_WIDE_INT bitsize = tree_low_cst (DECL_SIZE (field), 1);
> -             HOST_WIDE_INT typesize
> +             unsigned HOST_WIDE_INT bitsize
> +               = tree_low_cst (DECL_SIZE (field), 1);
> +             unsigned HOST_WIDE_INT typesize
>                 = tree_low_cst (TYPE_SIZE (TREE_TYPE (field)), 1);
> 
>               if (typesize < bitsize)
> 

let's go with that variant then.  Thanks.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43528