Re: object addresses in Lua

[Florian Weimer <fw@...>]

* Xingzhi Pan:

> Thanks for the reply.  So if I'm not supporting userdata (a Lua
> implementation which doesn't speak to C, nor allow any C extension)
> and coroutine, is a copying collector doable?

Built-in tostring() on table returns something derived from the
address of the table.  Even that could be hidden by sacrificing
another word in the object.  Otherwise, I don't think there's anything
which is observable from the Lua level (especially if you discount the
debug package).