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Hallo,

Florian Weimer wrote:
> Can the C memory region associated with a userdata object change its
> address during the lifetime of the object?

     No, Lua uses a precise non-moving incremental mark-and-sweep
collector. It does not move memory around, which would be a bad thing
for a language designed to be embedded in C.

Cheers,
-alex
http://www.ventonegro.org/