cpdef method w/ unused buffer causes compilation error

[robertwb]

Hello,

The following code segment won't compile:

from numpy cimport ndarray

cdef class DumbClass:
    cpdef dumb_function(self):
        cdef ndarray[int] nothing
        return None

When I try to compile it, it returns

gcc -pthread -fno-strict-aliasing -DNDEBUG -O2 -march=i586 -mtune=i686 -fmessage-length=0 -Wall -D_FORTIFY_SOURCE=2 -fstack-protector -g -fwrapv -fPIC -I/home/hoytak/sysroot/lib/python2.5/site-packages/numpy/core/include -I/usr/include/python2.5 -c cs/test_cpdef.c -o build/temp.linux-i686-2.5/cs/test_cpdef.o -O3 -mtune=core2 -march=core2
cs/test_cpdef.c: In function ‘__pyx_f_2cs_10test_cpdef_9DumbClass_dumb_function’:
cs/test_cpdef.c:408: warning: implicit declaration of function ‘__Pyx_SafeReleaseBuffer’
cs/test_cpdef.c:408: error: ‘__pyx_bstruct_nothing’ undeclared (first use in this function)
cs/test_cpdef.c:408: error: (Each undeclared identifier is reported only once
cs/test_cpdef.c:408: error: for each function it appears in.)
error: command 'gcc' failed with exit status 1

A quick search shows that __pyx_bstruct_nothing is not declared anywhere.

Also, it seems to happen only in class methods and only when cpdef is used (not cdef or def).

I'm using changeset 1374.

Migrated from http://trac.cython.org/ticket/134

[robertwb]

@dagss changed owner from somebody to dagss
status from new to assigned
commented

[da-woods]

This seems to work on the current master.