[issue22939] integer overflow in iterator object

[Clement Rouault]

Clement Rouault added the comment:

Here is a first try for a patch.

There are two points I am not sure about:

1) The message for the OverflowError: is that explicit enough ?

2) The behaviour of the iterator after the raise of OverflowError. 
With this patch every call to `next(it)` where `it` have overflowed will raise `OverflowError` again.
Does this behaviour seems correct our should it raise StopIteration after the first OverflowError ?

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keywords: +patch
Added file: http://bugs.python.org/file37375/issue22939.patch

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