[Cython] (no subject)

[Yaroslav Halchenko]

On Wed, 05 Dec 2012, mark florisson wrote:
> > Thanks, I merged it.

> It'd be nice if you could add this as a testcase in the tests/run
> directory as a "don't segfault" kind of test.

I would be happy to extend the test battery but my blunt attempt failed,
i.e. the test doesn't cause the failure:

(git)novo:~deb/cython[remotes/upstream/master~1]git
$> rm -rf ~/.pyxbld ; python-dbg ./runtests.py -v -v weakfail; cat tests/run/weakfail.pyx 
Python 2.7.3 (default, Sep  9 2012, 17:05:18)                                            
[GCC 4.7.1]

Running tests against Cython 0.18-pre 73895001642d4531d32cac5ad2499f4ed5f3b286
Backends: c,cpp

runTest (__main__.CythonRunTestCase)
compiling (c) and running weakfail ... test_weakref (line 8) (weakfail.__test__)
Doctest: weakfail.__test__.test_weakref (line 8) ... ok
runTest (__main__.CythonRunTestCase)
compiling (cpp) and running weakfail ... test_weakref (line 8) (weakfail.__test__)
Doctest: weakfail.__test__.test_weakref (line 8) ... ok

----------------------------------------------------------------------
Ran 4 tests in 2.015s

OK
ALL DONE
[193903 refs]
import weakref

foo_dict = weakref.WeakValueDictionary()

cdef class Foo:
    cdef object __weakref__

def test_weakref(key):
    """
    >>> _ = test_weakref(48)
    """
    obj = Foo()
    foo_dict[key] = obj
    return obj


whenever if I do it manually then -- yeap:

(git)novo:~deb/cython[remotes/upstream/master~1]tests/run
$> rm -rf ~/.pyxbld ; PYTHONPATH=../../ python-dbg -c 'import pyximport as pi; pi.install(); import weakfail; s=weakfail.test_weakref(42)'
python-dbg: ../Modules/gcmodule.c:366: visit_decref: Assertion `gc->gc.gc_refs != 0' failed.
[1]    5508 abort      PYTHONPATH=../../ python-dbg -c 

so  how to make it 'effective'?

-- 
Yaroslav O. Halchenko
Postdoctoral Fellow,   Department of Psychological and Brain Sciences
Dartmouth College, 419 Moore Hall, Hinman Box 6207, Hanover, NH 03755
Phone: +1 (603) 646-9834                       Fax: +1 (603) 646-1419
WWW:   http://www.linkedin.com/in/yarik