calchash(): work around broken RTTI.

[ginac.git] / ginac / expairseq.cpp

diff --git a/ginac/expairseq.cpp b/ginac/expairseq.cpp
index 72848364ae17de1b69f14393bd3ddd45584b5b63..1bf63457432eb3e8d9fdd211006b7d7fd42e564d 100644 (file)
--- a/ginac/expairseq.cpp
+++ b/ginac/expairseq.cpp
@@ -30,6 +30,7 @@
 #include "archive.h"
 #include "operators.h"
 #include "utils.h"
+#include "hash_seed.h"
 #include "indexed.h"
 
 #include <algorithm>
@@ -611,8 +612,7 @@ unsigned expairseq::return_type() const
 
 unsigned expairseq::calchash() const
 {
-       const void* this_tinfo = (const void*)typeid(*this).name();
-       unsigned v = golden_ratio_hash((p_int)this_tinfo);
+       unsigned v = make_hash_seed(typeid(*this));
        epvector::const_iterator i = seq.begin();
        const epvector::const_iterator end = seq.end();
        while (i != end) {