C++ templates hides parent members

Question

Usually, when A is inheriting from B, all the members of A are automatically visible to B\'s functions, for example

Answer 1

You can also do

class B : public A {
    int getA() {return this->a;}
};

The problem is that the member is in a base, which depends on a template parameter. Normal unqualified lookup is performed at the point of definition, not at the point of instantiation, and therefore it doesn't search dependent bases.