[issue22643] Integer overflow in case_operation

[Roundup Robot]

Roundup Robot added the comment:

New changeset 33290d0dd946 by Benjamin Peterson in branch '3.4':
merge 3.3 (#22643)
https://hg.python.org/cpython/rev/33290d0dd946

New changeset ffabb674140c by Benjamin Peterson in branch 'default':
merge 3.4 (#22643)
https://hg.python.org/cpython/rev/ffabb674140c

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<http://bugs.python.org/issue22643>
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