$NetBSD: patch-ad,v 1.1 2004/04/06 19:02:49 reinoud Exp $

--- src/Classes/Abstract/basic.hpp.orig	2004-04-05 23:16:59.000000000 +0200
+++ src/Classes/Abstract/basic.hpp
@@ -81,7 +81,7 @@ inline SI max (SI i, SI j) { if (i>j) re
 inline double min (double i, double j) { if (i<j) return i; else return j; }
 inline double max (double i, double j) { if (i>j) return i; else return j; }
 inline int hash (int i) { return i; }
-inline int hash (pointer ptr) { return (int) ptr; }
+inline int hash (pointer ptr) { return (int) ((char *) ptr - (char *) 0); }
 inline int copy (int x) { return x; }
 
 enum display_control { INDENT, UNINDENT, HRULE, LF };