Hello,
while converting a class from pure Python to Cython, I've come across
the following:
$ cat r.pyx
cdef class r(object):
cdef long long n
cdef long long d
def __init__(self, long long n, long long d):
self.n = n
self.d = d
def __int__(self):
return (self.n // self.d)
__long__ = __int__
$ cython -v r.pyx
Compiling /tmp/r.pyx
$ gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall
-Wstrict-prototypes -fPIC -I/usr/include/python2.5 -c r.c -o r.o
r.c:487: error: ‘None’ undeclared here (not in a function)
$ sed -e '484,490!d;488i^^^^^^^^^^^^^^^^^^^^^^^^ up here' r.c
0, /*nb_coerce*/
#endif
__pyx_pf_1r_1r___int__, /*nb_int*/
None, /*nb_long*/
^^^^^^^^^^^^^^^^^^^^^^^^ up here
0, /*nb_float*/
#if PY_MAJOR_VERSION < 3
0, /*nb_oct*/
I understand that "__long__ = __int__" is not the correct way to do
method aliasing in Cython, but the compiler should probably emit a
warning -- generating incorrect C code looks like a bug.
Best regards,
Riccardo
--
Riccardo Murri, via Rossée 17, 6987 Caslano (CH)
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