C++ – QList and shared_ptr

What do you think? Is this correct or are there memory leaks?

Source:

#include <QList.h>
#include <boost/shared_ptr.hpp>
#include <iostream>

class A {
private:
    int m_data;
public:
    A(int value=0) { m_data = value; }
    ~A() { std::cout << "destroying A(" << m_data << ")" << std::endl; }
    operator int() const { return m_data; }
};

int _tmain(int argc, _TCHAR* argv[])
{
    QList<boost::shared_ptr<A> > list;
    list.append(boost::shared_ptr<A>(new A(6)));
    std::cout << int(*(list.at(0))) << std::endl;
    return 0;
}

Output:

6
destroying A(6)