diff -uprN src0/gdb/observer.sh src1/gdb/observer.sh
--- src0/gdb/observer.sh	2009-05-26 09:56:19.000000000 -0400
+++ src1/gdb/observer.sh	2009-08-06 09:36:21.000000000 -0400
@@ -137,6 +137,8 @@ observer_${event}_notification_stub (con
   observer_${event}_ftype *notify = (observer_${event}_ftype *) data;
   const struct ${event}_args *args = args_data;
   notify (`echo ${actual} | sed -e 's/\([a-z0-9_][a-z0-9_]*\)/args->\1/g'`);
+  args = NULL; /* To avoid compiler warning for nitifications with no
+		  arguments.  */
 }
 
 struct observer *