Calling a base class method in a template virtual class hierarchy

Question

Let\'s say I have the following class hierarchy:

template< class T >
class TestBase {

public:

    virtual T const & do_foo() = 0;

};

template&l         


        

Answer 1

It will not win any awards for it's beauty, but this piece of code works as expected, without the compiler complaining.

virtual int do_bar() {
    return ((TestBase *) this)->do_foo() + 1;
}