X-Git-Url: https://www.ginac.de/ginac.git//ginac.git?a=blobdiff_plain;f=ginac%2Fsymbol.cpp;h=9897bb4c3b5de35d2344ae90d13bd08d134d247b;hb=df823d53c56c762072f534c9f24479090162e33a;hp=cb33de7f964342699e2cc017bbdfbc181c5a2c76;hpb=1602530f716ba1d425a0667b897182b99c374823;p=ginac.git

diff --git a/ginac/symbol.cpp b/ginac/symbol.cpp
index cb33de7f..9897bb4c 100644
--- a/ginac/symbol.cpp
+++ b/ginac/symbol.cpp
@@ -3,7 +3,7 @@
  *  Implementation of GiNaC's symbolic objects. */
 
 /*
- *  GiNaC Copyright (C) 1999-2009 Johannes Gutenberg University Mainz, Germany
+ *  GiNaC Copyright (C) 1999-2010 Johannes Gutenberg University Mainz, Germany
  *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
@@ -25,6 +25,7 @@
 #include "archive.h"
 #include "tostring.h"
 #include "utils.h"
+#include "hash_seed.h"
 #include "inifcns.h"
 
 #include <map>
@@ -253,8 +254,8 @@ bool symbol::is_equal_same_type(const basic & other) const
 
 unsigned symbol::calchash() const
 {
-	const void* this_tinfo = (const void*)typeid(*this).name();
-	hashvalue = golden_ratio_hash((p_int)this_tinfo ^ serial);
+	unsigned seed = make_hash_seed(typeid(*this));
+	hashvalue = golden_ratio_hash(seed ^ serial);
 	setflag(status_flags::hash_calculated);
 	return hashvalue;
 }