Why do I get C2248 (inaccessible member) with a protected static member?

Question

Let\'s say I have:

#include 
#include 
#include 

std::vector Base::m_intList;

class Base
{
public:
           


        

Answer 1

class Derived : Base means class Derived : private Base. The behaviour of private inheritance is:

• protected members of the base class become private members of the derived class.
• private members of the base class have no access as members of the derived class.

So m_intList is:

• protected in Base
• private in Derived
• no access in MoreDerived

hence your error.