Hi, looking at this ticket:
http://trac.cython.org/cython_trac/ticket/810 and at the underlying Sage ticket: http://trac.sagemath.org/sage_trac/ticket/14452 ISTM that this crash is not actually related to cdef kwargs but simply to the fact that the C code is now calling directly through the C layer and no longer through Python. The major difference being that Python puts arguments into a tuple that is kept alive for the whole timespan of the call, whereas C just passes in the reference and forgets about it. Since the method in question replaces references internally, it's quite possible that it somehow deletes the last reference to the object that was passed in. I wouldn't really know why, as we specifically guard against these things since somewhere around 0.17 (and comment #7 in the Sage ticket shows an example of that), but maybe this is just a corner case that we failed to handle so far, or maybe the Sage code is doing something 'unexpected' here. Stefan _______________________________________________ cython-devel mailing list cython-devel@python.org http://mail.python.org/mailman/listinfo/cython-devel
