[issue1621] Do not assume signed integer overflow behavior

[Neal Norwitz]

Neal Norwitz added the comment:

On Jan 27, 2008 6:45 PM, Ismail Donmez <report at bugs.python.org> wrote:
>
> Can you try with -Wstrict-overflow=3 , but yes I am using gcc 4.3 trunk.

I just tried with =1, =2, =3, and no =.  All the same result:  no warning.

Ismail, thanks for going through all this effort.  It's very helpful.

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