diff -ur spamprobe-1.4b-orig/src/includes/Buffer.h spamprobe-1.4b/src/includes/Buffer.h
--- spamprobe-1.4b-orig/src/includes/Buffer.h	2006-03-10 20:42:01.000000000 -0500
+++ spamprobe-1.4b/src/includes/Buffer.h	2006-03-10 20:42:38.000000000 -0500
@@ -32,6 +32,7 @@
 #define _Buffer_h
 
 #include "Array.h"
+#include <cassert>
 
 //
 // Similar to Array but handles variable length.