--- OLD/xc/programs/Xserver/os/xdmcp.c	Thu Jan  1 00:00:00 1970
+++ NEW/xc/programs/Xserver/os/xdmcp.c	Thu Jan  1 00:00:00 1970
@@ -35,6 +35,7 @@
 #include <netdb.h>
 #endif
 #include <stdio.h>
+#include <stdlib.h>
 #include "X.h"
 #include "Xmd.h"
 #include "misc.h"