[GRASS-dev] Re: ctypes problem with Vect_open_old

[Martin Landa]

Hi,

2011/2/4 Glynn Clements <glynn at gclements.plus.com>:
>
>> > If this is happening when the ctypes wrappers and vector libraries are
>> > built at the same time, then we have a problem with our build system.
>> > If it's caused by mixing ctypes wrappers and vector libraries from
>> > different builds (e.g. PYTHONPATH pointing to a different version),
>> > then you need to prevent that.
>>
>> unfortunately not sure how to fix it. What solution would you suggest?
>
> I'd suggest determining which of the two cases above is actually
> occurring.
>
> Add some print statements to the Python script to determine what
> PYTHONPATH is set to, whether off_t is an alias for __off_t or
> __off64_t, etc.

I put

"""
print os.environ['PYTHONPATH']
print sizeof(off_t)
"""

before calling Vect_open_old() and into vector.py, here is the output

/usr/local/src/grass_trunk/dist.i686-pc-linux-gnu/etc/python
8
/usr/local/src/grass_trunk/dist.i686-pc-linux-gnu/etc/python
8
D1/5: Vect__open_old(): name = (null) mapset = (null) layer= (null) update = 0
Segmentation fault

Martin

-- 
Martin Landa <landa.martin gmail.com> * http://geo.fsv.cvut.cz/~landa