lua_getref problem

[Juergen Fuhrmann <fuhrmann@...>]

Dear men(&women) on the moon,

We are successfully using now lua as an extension language for several
numerics packages (I confess I still  have to post  this info onto the
list of projects using lua), and  with things becoming more complex we
are stuck now with the following problem: 

I have written a package olua which manages proxies of C structs using
lua tables. The  central data type of  this  is oluaObject which is  a
struct holding a  _reference_ to an lua object  created by lua_ref  --
after  running into  trouble  by  using luaObjects  directly due  some
possibly rather common misunderstanding of luaObjects. 

Everytime I want  to access the luaObject behind  the oluaObject I now
have to call lua_getref.  These calls to lua_getref increase the C2lua
stack by calling put_luaObject. The result is that, when doing this in
a complex environment, I get the "Lua2C - C2Lua overflow" message just
by  accessing these references  a  lot  of times.   Of course I  could
increase  the stack limit  in my source to  fit our needs for the time
being, but I consider this as rather unnatural... 

Is this a bug, a feature or a mis-understanding from my side ?

Still in honeyemoon with lua - 
Juergen Fuhrmann


                             Numerical Mathematics & Scientific Computing
               Weierstrass Institute for Applied Analysis and Stochastics
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