--- examples/listtree2.c.orig	Mon Dec  1 13:21:01 2008
+++ examples/listtree2.c	Mon Dec  1 13:21:08 2008
@@ -1,4 +1,5 @@
 #include <stdio.h>
+#include <stdlib.h>
 #include <X11/Intrinsic.h>
 #include <X11/StringDefs.h>
 #include "TreeFSel.h"