[MATRIX-SIG] Seg fault with slice

[Konrad Hinsen]

> In the attempt to make the nslice object more like a slice I tried a
> similar approach like Konrad Hinsen in his indexing.py but get a
> seg. fault if len returns sys.maxint. This happens only on Linux not on
> an alpha box. There the error is:

I don't quite understand your code. What is nslice supposed to do?

As it is now, the __getslice__ method of nslice never gets called,
which doesn't seem intentional. When you index the array with an
nslice object, NumPy sees it as a sequence. It asks for the length
and finds maxint, meaning maxint dimensions! I didn't check in detail
where the crash comes from, but I suppose it's some kind of memory
overflow due an extremely unreasonable request.

I *suppose* you want a[n_sl] to call the __getslice__ method,
but that doesn't happen!

In fact, your whole approach won't work, because array objects currently
accept only integers and slice objects in an indexing tuple.
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Konrad Hinsen                          | E-Mail: hinsen@ibs.ibs.fr
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