Re: metatable indirection limit. Why?

[Roberto Ierusalimschy <roberto@...>]

> Doing an experiment on chaining metatables I came up with this test code:
> 
> http://pastie.org/3551948
> 
> the pattern is:
> 
>   Obj1 = { test = function() print("ok") end }
>   Obj2 = {}
>   setmetatable(Obj2, { __index = Obj1 })
>   Obj3 = {}
>   setmetatable(Obj3, { __index = Obj2 })
>   Obj3.test()
> 
> etc...
> 
> Interestingly, both lua and luajit halt when the number of
> "indirections" is > 99, and I was wondering why.

Try this pattern:

   Obj1 = { test = function() print("ok") end }
   Obj2 = {}
   setmetatable(Obj2, { __index = Obj1 })
   setmetatable(Obj1, { __index = Obj2 })

-- Roberto