On 8. 4. 2013 Matěj Laitl wrote:
> Hi cython-devel and Mark,
> I was getting
>
> > Fatal Python error: Acquisition count is 0 (line XYZ)
>
> when I was doing
>
> > cdef class MemViewContainer:
> > cdef double[:, :] A
> >
> > cdef a_method(self):
> > self.A = np.eye(2)
> > some_function(self.A.T)
> > some_function(self.A.T)
>
> I have found out that it is caused by the self.A.T expression - Cython emits
> __PYX_XDEC_MEMVIEW() after the call, but no __PYX_INC_MEMVIEW() before the
> call. This doesn't happen if the memoryview is a function-local variable.
>
> Proper test case is in the pull request [1] along with an ad-hoc patch that
> fixes the problem here, but needs review whether it is actually correct. I'd
> be very grateful if a fix for this problem could get it into Cython 0.19.
>
> Cython version: 0.19b1 3a6b9856187d7e490e08
>
> [1] https://github.com/cython/cython/pull/201
Bump. Anything else I can provide to help with getting this fixed in 0.19?
Ragards,
Matěj
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