[Numpy-discussion] Segmentation fault with argsort

Robert Kern robert.kern@gmail....
Fri Dec 18 12:00:12 CST 2009


On Fri, Dec 18, 2009 at 11:57, Skipper Seabold <jsseabold@gmail.com> wrote:
> On Fri, Dec 18, 2009 at 12:52 PM, Robert Kern <robert.kern@gmail.com> wrote:
>> On Fri, Dec 18, 2009 at 11:46, Keith Goodman <kwgoodman@gmail.com> wrote:
>>> I am using the numpy 1.3 binary from Ubuntu 9.10. Is this already
>>> known, fixed, reproducible?
>>>
>>>>> np.array(121).argsort(0).argsort(0)
>>> Segmentation fault
>>>
>>> The expected result:
>>>
>>> AttributeError: 'np.int64' object has no attribute 'argsort'
>>
>> Why would you expect that? On OS X with an SVN checkout ~1.4:
>>
>> In [1]: np.array(121).argsort(0).argsort(0)
>> Out[1]: 0
>>
>> In [6]: np.int64.argsort
>> Out[6]: <method 'argsort' of 'numpy.generic' objects>
>>
>
> Kubuntu 9.10
>
> In [1]: import numpy as np
>
> In [2]: np.__version__
> Out[2]: '1.4.0.dev7539'
>
> In [3]: np.array(121).argsort(0).argsort(0)
> Segmentation fault

Can you give us a gdb backtrace?

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless
enigma that is made terrible by our own mad attempt to interpret it as
though it had an underlying truth."
  -- Umberto Eco


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