call derived method from base class

[let_me_in]

Hi All,

I'm having troubles achieving something, I need to call an overriden method from the base class as follow :

class Base{
	public: 
		void start(){
			new thread(boost::bind(&Base::run, this));
		}
		
		virtual void go(){
			// do something
		}
 
}
 
 
class Derived : public Base {
	public:
		void go(){
			//do something different
		}
}
 
 
int main(int argc, char** argv){
	Derived* der = new Derived();
	der->start();
 
	return 0;
}

I thought this way the binding is done at runtime, and the method of the base class is called but this is not what I'm getting !!

Just to discard the boost::bind, I tried this as well :

class Base{
	public: 
		void start(){
			new thread(boost::ref(*this));
		}
		
		virtual void go(){
			//do something.
		}
		
		void operator()(){
			this->go();
		}
 
}
 
 
class Derived : public Base {
	public:
		void go(){
			//do something different
		}
}
 
 
int main(int argc, char** argv){
	Derived* der = new Derived();
	der->start();
 
	return 0;
}

OS : windows
COMPILER : gcc

am I doing something wrong ?

thanks in advance.

BR