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Suppose I have an object that is allocated
(created) in Delphi (or C++ ro whatever). I don't (can't) want to give Lua full
control on the object's life, I just want to give access to its properties via
properly set callback functions in metatable of a heavy user data, that I wrap
this object into for Lua.
Now the object gets destroyed (in Delphi), that
brings the possibility of calling property access function with a pointer to
already freed object if I have some heavydata references to this object left in
Lua.
Any ideas if I can somehow avoid this? Ideally
would be me being able to track down all userdata that points to this object and
nil them out in Lua, but I can't think of the way how to make it automatically,
without thorough keeping track of references by hand. Or maybe I can do it some
other way around?
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