c-common.c (warn_for_collisions_1): Use appropriate option when warning.

2008-02-19  Manuel Lopez-Ibanez  <manu@gcc.gnu.org>

	* c-common.c (warn_for_collisions_1): Use appropriate option when
	warning.

From-SVN: r132428

gcc/ChangeLog

+2008-02-19  Manuel Lopez-Ibanez  <manu@gcc.gnu.org>
+
+	* c-common.c (warn_for_collisions_1): Use appropriate option when
+	warning.
+
 2008-02-19  Nick Clifton  <nickc@redhat.com>
 
 	PR other/31349

gcc/c-common.c

@@ -1528,7 +1528,8 @@ warn_for_collisions_1 (tree written, tree writer, struct tlist *list,
 	  && DECL_NAME (list->expr))
 	{
 	  warned_ids = new_tlist (warned_ids, written, NULL_TREE);
-	  warning (0, "operation on %qE may be undefined", list->expr);
+	  warning (OPT_Wsequence_point, "operation on %qE may be undefined",
+		   list->expr);
 	}
       list = list->next;
     }