I'm not really sure, but it seems your code does not crash any longer if you remove the Py_TPFLAGS_HAVE_GC from your definition of class_metatype_object.
Yes, I'm aware of that. What I don't understand is how the builtin
----- Original Message ----- From: "Thomas Heller" <thomas.heller@ion-tof.com> To: "David Abrahams" <david.abrahams@rcn.com>; <python-dev@python.org> Sent: Thursday, February 21, 2002 10:01 AM Subject: Re: [Python-Dev] A little GC confusion metatype
gets away with Py_TPFLAGS_HAVE_GC when some of its instance types are not even heap-allocated.
Hm, I don't understand you, Are you talking about Py_TPFLAGS_HEAPTYPE?
No, please re-read my initial posting. Py_TPFLAGS_HAVE_GC places requirements on the allocation method of instances, at least according to the docs.