--- gcc/flags.h.orig	Sun Jan 31 09:46:18 1999
+++ gcc/flags.h	Tue Mar 30 13:17:11 1999
@@ -137,6 +137,10 @@
 
 extern int warn_aggregate_return;
 
+/* Nonzero means that -Wformat accepts certain non-ANSI formats.  */
+
+extern int flag_format_extensions;
+
 /* Nonzero if generating code to do profiling.  */
 
 extern int profile_flag;