[issue1621] Do not assume signed integer overflow behavior

[Xiang Zhang]

Xiang Zhang added the comment:

Change tuple_and_list.patch with empty curly braces. I don't add the test for __length_hint__. According to the comment, when overflow happens, it is either ignored or a MemoryError will finally be raised. I am not willing to test a MemoryError in this case.

BTW, how do you get the error?

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Added file: http://bugs.python.org/file43842/tuple_and_list_v2.patch

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