[Python-Dev] Re: Evil Trashcan and GC interaction (original) (raw)

Neil Schemenauer nas@python.ca
Thu, 28 Mar 2002 10:45:14 -0800

Tim Peters wrote:

We each patched ceval.c locally; e.g., here's mine:

_#define SETLOCAL(i, value) do { PyObject *t = GETLOCAL(i); _ _GETLOCAL(i) = value; _ PyXDECREF(t); } while (0)

That's the same fix Andrew and I had in mind. My concern is that this is probably not the only bug of this type. The trashcan mechanism changes the ordering of object deallocation. What are the chances of other bugs like this lurking somewhere?

Neil