Pull in the change to only do the null format string check if -pedantic.

cross/COMMON/patches-egcs/patch-ai

@@ -0,0 +1,14 @@
+$NetBSD: patch-ai,v 1.1 2000/06/11 18:45:54 mycroft Exp $
+
+--- gcc/c-common.c.orig	Tue Aug 18 18:49:52 1998
++++ gcc/c-common.c	Sun Jun 11 14:41:38 2000
+@@ -1314,7 +1314,8 @@
+ 
+   if (integer_zerop (format_tree))
+     {
+-      warning ("null format string");
++      if (pedantic)
++	warning ("null format string");
+       return;
+     }
+   if (TREE_CODE (format_tree) != ADDR_EXPR)