--- OLD/xc/programs/xhost/xhost.c	Thu Jan  1 00:00:00 1970
+++ NEW/xc/programs/xhost/xhost.c	Thu Jan  1 00:00:00 1970
@@ -38,6 +38,7 @@
 #include <X11/Xproto.h>
 #include <X11/Xfuncs.h>
 #include <stdio.h>
+#include <stdlib.h>
 #include <signal.h>
 #include <setjmp.h>
 #include <ctype.h>