[ns] incomplete type(?)

[Jingwen Jin <jjin1@uiuc.edu>]

Hi,

I'm doing something like:

class TTT;

class ProxyAgent : public Agent {
  ...
  TTT ttt;
  ...
}


However, the compilation complains that "field ttt has incomplete type".
Before adding "TTT ttt", eveything was ok. Does anybody know what's going
on?

Thanks,

Jingwen