Stefan Krah added the comment:
The high and low words of the 64-bit value are switched:
>>> a = array.array('Q', [1])
>>> m = memoryview(a)
>>> m[0]= 2**32+5
>>> m[0]
21474836481
>>> struct.unpack_from('8s', m, 0)
(b'\x01\x00\x00\x00\x05\x00\x00\x00',)
Can anyone reproduce this in a source build? I think this should
be a blocker.
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priority: critical -> release blocker
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Python tracker <[email protected]>
<http://bugs.python.org/issue15993>
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