Question

Possible Duplicates:
C++ : implications of making a method virtual
Why is 'virtual' optional for overridden methods in derived classes?

I wonder, what is documented behavior in the following case:

You have

class A
{
 virtual void A()
 {
   cout << "Virtual A"<<endl;
 }
 void test_A()
 {
   A();
 }
}

class B: public A
{
  void A()
  {
   cout << "Non-virtual A in derived class"<<endl;
  }

  void test_B()
  {
    A();
  }
}

A a; B b;
a.test_A();
b.test_A();
b.test_B();

What it supposed to do according to C++ standard and why?
GCC works like B::A is also also virtual.

What shoudl happen in general when you override virtual method by non-virtual one in derived class?

Answer 1

The sub-class member function is implicitly virtual if a virtual base-class member function with the same name and signature exists.