--- exp/src/ht.c.orig	Thu May  6 08:41:16 2004
+++ exp/src/ht.c	Thu May  6 08:41:35 2004
@@ -1,3 +1,4 @@
+#include <sys/types.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>