Tim Peters <t...@python.org> added the comment:
After some thought, I'm sure the diagnosis is correct: the weakref list must be made invisible to gc. That is, simply don't traverse it at all. The crash is exactly what's expected from traversing objects a container doesn't own references to. I agree the tp_traverse docs should point out that weakref lists are special this way, but I think the problem is unique to them - can't think of another case where a container points to an object it doesn't own a reference to. ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue39778> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
