re PR target/35496 (test failures between revs. 132950 and 132974)

	PR target/35496
	* stor-layout.c (update_alignment_for_field): Set minimum alignment
	of the underlying type of a MS bitfield layout to the natural
	alignment of the type.

From-SVN: r133343

gcc/ChangeLog

+2008-03-19  Uros Bizjak  <ubizjak@gmail.com>
+
+	PR target/35496
+	* stor-layout.c (update_alignment_for_field): Set minimum alignment
+	of the underlying type of a MS bitfield layout to the natural
+	alignment of the type.
+
 2008-03-19  Jan Hubicka  <jh@suse.cz>
 
 	PR other/35094

gcc/stor-layout.c

@@ -699,6 +699,9 @@ update_alignment_for_field (record_layout_info rli, tree field,
 		 && ! integer_zerop (DECL_SIZE (rli->prev_field)))))
 	{
 	  unsigned int type_align = TYPE_ALIGN (type);
+	  unsigned int type_size
+	    = tree_low_cst (TYPE_SIZE (type), 1);
+	  type_align = MAX (type_align, type_size);
 	  type_align = MAX (type_align, desired_align);
 	  if (maximum_field_alignment != 0)
 	    type_align = MIN (type_align, maximum_field_alignment);