This patch addresses two main issues: (1) There exist some non-fatal

errors in some of the hash algorithms. For exmaple, in float_hash and
complex_hash a certain part of the value is not included in the hash
calculation. See Tim's, Guido's, and my discussion of this on
python-dev in May under the title "fix float_hash and complex_hash for
64-bit *nix"

(2) The hash algorithms that use pointers (e.g. func_hash, code_hash)
are universally not correct on Win64 (they assume that sizeof(long) ==
sizeof(void*))

As well, this patch significantly cleans up the hash code. It adds the
two function _Py_HashDouble and _PyHash_VoidPtr that the various
hashing routine are changed to use.

These help maintain the hash function invariant: (a==b) =>
(hash(a)==hash(b))) I have added Lib/test/test_hash.py and
Lib/test/output/test_hash to test this for some cases.

1 files changed, 1 insertions, 1 deletions

diff --git a/PC/_winreg.c b/PC/_winreg.c
index f92476eb62..45399590e6 100644
--- a/PC/_winreg.c
+++ b/PC/_winreg.c
@@ -423,7 +423,7 @@ PyHKEY_hashFunc(PyObject *ob)
 	/* Just use the address.
 	   XXX - should we use the handle value?
 	*/
-	return (long)ob;
+	return _Py_HashPointer(ob);
 }