[Python-Dev] PEP 3118: Extended buffer protocol (new version)

[Travis Oliphant]

Greg Ewing wrote:
> Travis Oliphant wrote:
>
>> It is more convenient to store any slicing information (so a memory 
>> view object could store an arbitrary slice of another object) as 
>> offsets, lengths, and skips which can be used to adjust the memory 
>> buffer returned by base.
>
> What happens if the base object changes its memory
> layout in such a way that the stored offsets, lengths
> and skips are no longer correct for the slice that
> was requested?

When the memory view object gets the buffer info again from the base 
object, it will be able to figure this out and raise an error.

-Travis