no fields

//I have a template class that inherits from a base class.

template<class Buff2>
class ClassA
{
    protected:
        shared_ptr<Buff2> buf2_container;

    public:
        ClassA(shared_ptr<Buff2> buff2) : buf2_container(buff2) { }



template <class Buff, class Buff2>
class ClassB : public ClassA<Buff2>
{
    private:
        shared_ptr<Buff> buf_container;

    public:
        ClassB(shared_ptr<Buff> buff, shared_ptr<Buff2> buff2) : ClassA(buff2), buf_container(buff) { }



// And here's the call ...
    b2 = std::make_shared<MyBuffer >();
    // ...
    b1 = std::make_shared<special_buffer <std::pair<no_t, ABData>>>(b2_sz);
    ClassB<special_buffer <std::pair<no_t, ABData>>, MyBuffer > buf(b1, b2);


/*
error: class 'ClassB<Buff, Buff2>' does not have any field named 'ClassA'
     shared_ptr<Buff2> buff2) : ClassA(buff2),
*/