New issue 2142: cpyext-driven crash when using cython - NotImplementedError
when using __sub__
https://bitbucket.org/pypy/pypy/issues/2142/cpyext-driven-crash-when-using-cython
Marco Neumann:
## Environment ##
foo.pyx:
```
#!python
cdef class C:
def __cinit__(self):
pass
def __sub__(self, o):
return 0
```
test.py:
```
#!python
import foo
a = foo.C()
b = foo.C()
a - b
```
cython --version:
```
#!
Cython version 0.23.2
```
pypy --version:
```
#!
Python 2.7.10 (f3ad1e1e1d62, Sep 07 2015, 21:46:51)
[PyPy 2.6.1 with GCC 5.2.0]
```
gcc --version:
```
#!
gcc (GCC) 5.2.0
Copyright (C) 2015 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
```
## Steps to reproduce ##
```
#!
cython foo.pyx
gcc -shared -IPATH/TO/YOUR/PYPY/INCLUDE -fPIC foo.c -o foo.pypy-26.so
pypy test.py
```
## Result ##
```
#!
RPython traceback:
File "pypy_interpreter_gateway.c", line 812, in
BuiltinCodePassThroughArguments1_funcrun_obj
File "pypy_module_cpyext_slotdefs.c", line 2661, in wrap_binaryfunc_l_11
Fatal RPython error: NotImplementedError
fish: “pypy test.py” terminated by signal SIGABRT (Abort)
```
## References ##
This bug mentioned here:
https://groups.google.com/forum/#!topic/cython-users/Nm56Ow-toQw
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