STINNER Victor <vstin...@python.org> added the comment:
gc_crash.py: * PyObject_GC_UnTrack() + PyObject_GC_Track() is used to order objects in the GC collection 0, the objects which are involved in the reference cycle. * BadGC2Type type is implemented in C, uses Py_TPFLAGS_HAVE_GC, implements tp_traverse, but it doesn't implement tp_clear. * IHMO gc_crash.py is only legit code. BadGC2Type implements the GC protocol (except to tp_clear). I'm not sure that it's the same bug than reproducer.tar.gz which uses a weak reference. BadGC2Type is used to call a function in tp_dealloc. It should be possible to use a weak reference for that: the weak reference can use a callback. But I failed write a reproducer script using a weak reference. ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue38006> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
