[Python-Dev] test_gzip/test_tarfile failure om AMD64

[Bob Ippolito]

On May 31, 2006, at 8:31 AM, Tim Peters wrote:

> I'm afraid a sabbatical year isn't long enough to understand what the
> struct module did or intends to do by way of range checking <0.7
> wink>.
>
> Is this intended?  This is on a 32-bit Windows box with current trunk:
>
>>>> from struct import pack as p
>>>> p("I", 2**32 + 2343)
> C:\Code\python\lib\struct.py:63: DeprecationWarning: 'I' format
> requires 0 <= number <= 4294967295
>  return o.pack(*args)
> '\x00\x00\x00\x00'
>
> The warning makes sense, but the result doesn't make sense to me.  In
> Python 2.4.3, that example raised OverflowError, which seems better
> than throwing away all the bits without an exception.

Throwing away all the bits is a bug, it's supposed to mask with  
0xffffffffL

-bob