[Python-Dev] ints not overflowing into longs?

[Victor Stinner]

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.

http://bugs.python.org/issue11149
http://bugs.python.org/issue12973

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

Victor