On Mon, Oct 10, 2016 at 8:35 PM, Larry Hastings <la...@hastings.org> wrote: > Huh? In all other circumstances, a "borrowed" reference is exactly that: X > has a reference, and you are relying on X's reference to keep the object > alive. Borrowing from a borrowed reference is simply a chain of these; Z > borrows from Y, Y borrows from X, and X is the original person who did the > incref. But you're borrowing from something specific, somebody who the API > guarantees has a legitimate reference on the object and won't drop it while > you're using it. I bet for every other spot in the API I can tell you from > whom you're borrowing the reference.
Okay. Here's a test: PyObject* PyList_GetItem(PyObject *list, Py_ssize_t index) Return value: Borrowed reference. Presumably you own a reference to the list itself before you call this, and the list has a reference to its items. But suppose another thread clear()s the list immediately after you call this; whose reference are you borrowing now? The list's is gone. Or is this another API that will have to change post gilectomy? ChrisA _______________________________________________ Python-Dev mailing list Python-Dev@python.org https://mail.python.org/mailman/listinfo/python-dev Unsubscribe: https://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
