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Issue #13411: memoryview objects are now hashable when the underlying object is hashable.

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This commit is contained in:
Antoine Pitrou 2011-11-21 20:46:33 +01:00
parent 0a3229de6b
commit ce4a9da705
9 changed files with 100 additions and 19 deletions
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21
Objects/bytesobject.c
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@ -860,22 +860,11 @@ bytes_richcompare(PyBytesObject *a, PyBytesObject *b, int op)
static Py_hash_t
bytes_hash(PyBytesObject *a)
{
register Py_ssize_t len;
register unsigned char *p;
register Py_uhash_t x;
if (a->ob_shash != -1)
return a->ob_shash;
len = Py_SIZE(a);
p = (unsigned char *) a->ob_sval;
x = (Py_uhash_t)*p << 7;
while (--len >= 0)
x = (1000003U*x) ^ (Py_uhash_t)*p++;
x ^= (Py_uhash_t)Py_SIZE(a);
if (x == -1)
x = -2;
a->ob_shash = x;
return x;
if (a->ob_shash == -1) {
/* Can't fail */
a->ob_shash = _Py_HashBytes((unsigned char *) a->ob_sval, Py_SIZE(a));
}
return a->ob_shash;
}
static PyObject*