Hi,
We've run into a somewhat confusing error. When trying to compile
this tiny thing:
import numpy as np
cimport numpy as cnp
def func():
cdef cnp.ndarray[cnp.float64_t, ndim=2] arr1
a = np.pi
we get this:
gcc -fno-strict-aliasing -DNDEBUG -g -fwrapv -O3 -Wall
-Wstrict-prototypes
-I/Users/mb312/usr/local/lib/python2.6/site-packages/numpy/core/include
-I/Users/mb312/usr/local/include/python2.6 -c eg_thing.c -o
build/temp.macosx-10.6-i386-2.6/eg_thing.o
eg_thing.c: In function ‘__pyx_pf_8eg_thing_func’:
eg_thing.c:749: error: ‘__pyx_bstruct_arr1’ undeclared (first use in
this function)
eg_thing.c:749: error: (Each undeclared identifier is reported only once
eg_thing.c:749: error: for each function it appears in.)
It's an odd error because this:
def func():
cdef cnp.ndarray[cnp.float64_t, ndim=2] arr1
a = 2
compiles fine, as does this:
def func():
cdef cnp.ndarray arr1
a = np.pi
and this:
def func():
cdef cnp.ndarray[cnp.float64_t, ndim=2] arr1
arr1 = np.zeros((1,1))
so I suppose it may be an interaction of the buffer types syntax with
the uninitialized array and numpy. We using Cython 12.1...
Thanks a lot,
Matthew
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