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Merge 3.2: Issue #13703 plus some related test suite fixes.

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This commit is contained in:
Georg Brandl 2012-02-21 00:33:36 +01:00
commit 2fb477c0f0
38 changed files with 706 additions and 174 deletions
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13
Objects/object.c
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@ -759,10 +759,19 @@ _Py_HashBytes(unsigned char *p, Py_ssize_t len)
Py_uhash_t x;
Py_ssize_t i;
x = (Py_uhash_t) *p << 7;
/*
We make the hash of the empty string be 0, rather than using
(prefix ^ suffix), since this slightly obfuscates the hash secret
*/
if (len == 0) {
return 0;
}
x = (Py_uhash_t) _Py_HashSecret.prefix;
x ^= (Py_uhash_t) *p << 7;
for (i = 0; i < len; i++)
x = (_PyHASH_MULTIPLIER * x) ^ (Py_uhash_t) *p++;
x ^= (Py_uhash_t) len;
x ^= (Py_uhash_t) _Py_HashSecret.suffix;
if (x == -1)
x = -2;
return x;
@ -776,6 +785,8 @@ PyObject_HashNotImplemented(PyObject *v)
return -1;
}
_Py_HashSecret_t _Py_HashSecret;
Py_hash_t
PyObject_Hash(PyObject *v)
{