Can someone help me understand why the overloaded bar function doesn't work in this case?
class A {
public:
void foo(int a) {};
void bar(int a) {};
virtual void bar()=0;
};
class B : public A{
public:
virtual void bar() override {};
};
int main(int argc, char* argv[])
{
B b;
b.foo(2); // fine
b.bar(); // fine
b.bar(2); // not fine
}
The overriding works fine, but the override shadows the base class function. That is, name lookup in known class B finds only the one in B, the lookup stops there. You can either use base class qualification, or a using declaration in B, or (ugly) manual forwarders.
Example:
class B
: public A
{
public:
using A::bar;
virtual void bar() override {};
};
This is actually in the ISO C++ FAQ, with code examples
Trick is to add a
public:
using A::bar;