SOURCE Why does the following compile?  The parameter type of A's pure virtual 
function is private.  How come B can see it, allowing it to override the 
pure virtual function?

class A
{
private:
    struct S {  };
    virtual void bar ( S ) = 0;
};

class B : public A
{
public:
    virtual void bar ( A::S )
    {
    }
};

int main (  )
{
    B b;
    return 0;
}

-Jason

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