X-Git-Url: https://www.ginac.de/ginac.git//ginac.git?p=ginac.git;a=blobdiff_plain;f=ginac%2Ffunction.pl;h=e1533be27aba0d57cd126b8ae27cb02f719479ec;hp=31f8ba5ecf3c02ee620eb0105ee23a5c10717926;hb=0256e2fe48a0ecce79c37ac209620ca852b7f11a;hpb=75b1f2213aa6dc0e563b8ad6202522a5f40cb5be

diff --git a/ginac/function.pl b/ginac/function.pl
index 31f8ba5e..e1533be2 100644
--- a/ginac/function.pl
+++ b/ginac/function.pl
@@ -603,6 +603,7 @@ $implementation=<<END_OF_IMPLEMENTATION;
 #include "inifcns.h"
 #include "tostring.h"
 #include "utils.h"
+#include "hash_seed.h"
 #include "remember.h"
 
 #include <iostream>
@@ -1062,8 +1063,7 @@ ex function::eval_ncmul(const exvector & v) const
 
 unsigned function::calchash() const
 {
-	const void* this_tinfo = (const void*)typeid(*this).name();
-	unsigned v = golden_ratio_hash(golden_ratio_hash((p_int)this_tinfo) ^ serial);
+	unsigned v = golden_ratio_hash(make_hash_seed(typeid(*this)) ^ serial);
 	for (size_t i=0; i<nops(); i++) {
 		v = rotate_left(v);
 		v ^= this->op(i).gethash();