Issue #14815: Use Py_ssize_t instead of long for the object hash, to

preserve all 64 bits of hash on Win64.

Author: larryhastings

Misc/NEWS

@@ -10,6 +10,9 @@ What's New in Python 3.3.0 Beta 1?
 Core and Builtins
 -----------------
 
+- Issue #14815: Use Py_ssize_t instead of long for the object hash, to
+  preserve all 64 bits of hash on Win64.
+
 - Issue #12268: File readline, readlines and read() or readall() methods
   no longer lose data when an underlying read system call is interrupted.
   IOError is no longer raised due to a read system call returning EINTR

Modules/_randommodule.c

@@ -234,10 +234,10 @@ random_seed(RandomObject *self, PyObject *args)
     if (PyLong_Check(arg))
         n = PyNumber_Absolute(arg);
     else {
-        long hash = PyObject_Hash(arg);
+        Py_ssize_t hash = PyObject_Hash(arg);
         if (hash == -1)
             goto Done;
-        n = PyLong_FromUnsignedLong((unsigned long)hash);
+        n = PyLong_FromSsize_t(hash);
     }
     if (n == NULL)
         goto Done;