[Numpy-discussion] PyArray_FROM_OF from Cython
David Warde-Farley
dwf at cs.toronto.edu
Thu Oct 8 18:28:32 EDT 2009
I'm trying to use PyArray_FROM_OF from Cython and the generated C code
keeps crashing. Dag said on the Cython list that he wasn't sure what
was going on, so maybe someone here will have an idea.
The line that gdb says is crashing is:
#0 0x00e48287 in __pyx_pf_3_vq_vq (__pyx_self=0x0,
__pyx_args=0xca2d8, __pyx_kwds=0x0) at _vq_rewrite.c:1025
1025 __pyx_t_1 = PyArray_FROM_OF(((PyObject *)__pyx_v_obs),
__pyx_v_flags); if (unlikely(!__pyx_t_1)) {__pyx_filename =
__pyx_f[0]; __pyx_lineno = 90; __pyx_clineno = __LINE__; goto
__pyx_L1_error;}
obs and obs_a are both cdef'd np.ndarrays, and the former (obs) is
passed in as an argument.
I define flags as
cdef int flags = np.NPY_CONTIGUOUS | np.NPY_ALIGNED | np.NPY_NOTSWAPPED
and then the line that crashes is
obs_a = np.PyArray_FROM_OF(obs, flags)
Does anyone know what I'm doing wrong?
(I know I could use np.ascontiguous, but as far as I can tell this
_should_ work)
David
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