Comment by ajuc

Visualy it's not a problem. But now you need to maintain the links at all times. So all the operations must be aware of the whole program calltree. I think this could cause problems, especially when linking across libraries boundary, doing dependency injection, reflection etc, but I may be wrong.

Would like to see it implemented out of curiosity. My mine problem with merging trees could be solved by @pshc idea so maybe it could work?