[Cython] failing memory view tests in Python 2.4/5

[Stefan Behnel]

mark florisson, 10.07.2012 11:20:
> On 10 July 2012 08:24, Stefan Behnel wrote:
>> I've fixed some of the errors that current block the tests. The remaining
>> failures in the memory view tests exist in both Py2.4 and 2.5, which hints
>> at a problem with the buffer support in numpy.pxd.
>>
>> https://sage.math.washington.edu:8091/hudson/job/cython-devel-tests/BACKEND=c,PYVERSION=py25-ext/504/testReport/
>>
>> The memslice test failure is annoying. It looks like slice() fails to
>> properly deep-copy in Py2.[45]. I don't know if we can do anything about
>> this, seems more like a CPython bug. Deep copying is used to split function
>> definitions for fused types and I guess slice objects are used in
>> combination with the memory slices. So both don't currently work together
>> in Py2.[45].
> 
> I'm pretty sure I fixed the slice copying problem through a
> __deepcopy__ overload a long time ago elsewhere. I don't think these
> tests should be excluded from the test run yet.

Ok.


> Perhaps we should run
> the 2x tests from py27 down to 2.4. Tests in newer python's are less
> likely to fail.

Test failures are bad in general, though. Just because you hear about them
a couple of minutes later doesn't mean that they are less important.


>> I'd like to release a 0.17 alpha soon, so please get these sorted out in
>> one way or another ASAP. I'm also fine with declaring these features
>> unusable in older Python releases if we can't fix them, but it would
>> obviously be better to get them working.
> 
> I'll try to find some time this week.

Any news from this?

Stefan