Stefan Krah added the comment:
Both lzma and memoryview use PyLong_AsUnsignedLongLong() in the
affected code paths. I get this with the msi installed python.exe:
>>> import array
>>> a = array.array('Q', [1,2,3,4])
>>> m = memoryview(a)
>>> m[0] = 4
>>> m[0]
17179869184
>>>
And the correct result with the self-compiled (PGO) python.exe:
>>> import array
>>> a = array.array('Q', [1,2,3,4])
>>> m = memoryview(a)
>>> m[0] = 4
>>> m[0]
4
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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue15993>
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