Hi,
following test code produces C code that fails to compile:
> cdef class ExtensionType(object):
> cdef public int dummy
>
> def __init__(self, n):
> self.dummy = n
>
> cdef cfoo(self):
> print self.dummy
>
> items = [ExtensionType(1), ExtensionType(2)]
> cdef ExtensionType[:] view = np.array(items, dtype=ExtensionType)
> view[0].cfoo()
with gcc error and relevant C file lines:
extension_type_memoryview.c:2604:94: error: ‘PyObject’ has no member named
‘__pyx_vtab’
2570: PyObject *__pyx_t_1 = NULL;
(...)
2601: __pyx_t_1 = (PyObject *) *((struct
:__pyx_obj_25extension_type_memoryview_ExtensionType * *) ( /* dim=0 */
: (__pyx_v_25extension_type_memoryview_view.data + __pyx_t_2 *
: __pyx_v_25extension_type_memoryview_view.strides[0]) ));
2602: __Pyx_INCREF((PyObject*)__pyx_t_1);
2603: /* __pyx_t_4 allocated */
2604: __pyx_t_4 = ((struct
: __pyx_vtabstruct_25extension_type_memoryview_ExtensionType *)__pyx_t_1
:->__pyx_vtab)->cfoo(__pyx_t_1); if (unlikely(!__pyx_t_4)) {__pyx_filename
: = __pyx_f[0]; __pyx_lineno = 69;
It seems that generic PyObject* temporary for __pyx_t_1 is used here while
typed ExtensionType* temporary should have been used instead (as suggested by
excess casting on line 2601).
I have the above test-case (and a bit more) prepared as a patch that I'll
pull-request one this seemingly trivial bug is fixed in git.
Regards,
Matěj
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