Exactly - an extremely special case. It's an inherent property of the Cython language that user visible references are never NULL. (minus evil C code, obviously.) Suits me.
a good idea would be to warn if __dealloc__ actually references a Python attribute that tp_clear could have cleared, with a pointer to the class decorator that exempts the attribute/instance from tp_clear. That's a good idea.
Any help with this is appreciated. :) How can I help? If you want, I can attempt to create a patch and ask you if I don't make any progress. I do not have a good grip at Cython sourcecode yet, so if you can give me a head start by pointing out the locations where I can inject the new behaviour this would be most welcome. About the object graph analysis I do not know if that is easily added. I
Hi Stefan, On 04/22/2013 01:50 PM, Stefan Behnel wrote: thought it might be because Cython already has some type inference in place!? Greetings, Torsten -- DYNAmore Gesellschaft fuer Ingenieurdienstleistungen mbH Torsten Landschoff Office Dresden Tel: +49-(0)351-4519587 Fax: +49-(0)351-4519561 mailto:torsten.landschoff@dynamore.de http://www.dynamore.de DYNAmore Gesellschaft für FEM Ingenieurdienstleistungen mbH Registration court: Stuttgart, HRB 733694 Managing director: Prof. Dr. Karl Schweizerhof, Dipl.-Math. Ulrich Franz