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On Dec 18, 2009, at 2:50 PM, Andre de Leiradella wrote:

> Can't you just create a reference to A using luaL_ref in each object that needs a reference to it? When destroying these objects, luaL_unref the reference and A will be garbage collected when there are no references to it.

There's a big risk of uncollectable cycles with that approach since the refs are referenced from the registry until you unref them.