EDIT: using declarations are not necessary

Given

struct X {
void foo();
void bar();
};

struct Y : X {
    void foo();
protected:
    void bar();
};

The reference for Y includes X::bar as a (public) member function, despite it being hidden by Y::bar. It correctly hides X::foo.

The code that handles shadowing (name hiding) only considers derived members within one trenche.