#include <boost/shared_ptr.hpp>
#include <boost/bind.hpp>
using namespace boost;


    struct null_deleter
    {
        template<class T>
        void operator()(T) const
	{
        }
    };

int main()
{
    boost::shared_ptr<int> p(new int);
    boost::shared_ptr<void> p_x = p;
    
    extern void (*function)();    
    boost::shared_ptr<void ()> p2(function, null_deleter());
    boost::shared_ptr<void> p2_v = p2;
    
    return 0;
}