[Python-Dev] ints not overflowing into longs?

Victor Stinner victor.stinner at haypocalc.com
Thu Nov 3 13:00:18 CET 2011

Le Mercredi 2 Novembre 2011 19:32:38 Derek Shockey a écrit :
> I just found an unexpected behavior and I'm wondering if it is a bug.
> In my 2.7.2 interpreter on OS X, built and installed via MacPorts, it
> appears that integers are not correctly overflowing into longs and
> instead are yielding bizarre results. I can only reproduce this when
> using the exponent operator with two ints (declaring either operand
> explicitly as long prevents the behavior).
> >>> 2**100
> 0

This issue has already been fixed twice in Python 2.7 branch: int_pow() has 
been fixed and -fwrapv is now used for Clang.


It is maybe time for a new release? :-)


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