Re: Template cannot access its own protected members? huh?

On 4/10/2014 5:06 PM, cpisztest@gmail.com wrote:


Thanks. I shortened your code to this:

#include <boost/shared_ptr.hpp>

template<class T>
class R2
{
public:
    R2(const boost::shared_ptr<T> & resource);
protected:
    void Retain();
    void Relinquish();
};

class Test
{
public:
    friend void R2<Test>::Retain();
    friend void R2<Test>::Relinquish();
};

//------------------------------------------------
int main()
{
    boost::shared_ptr<Test> t(new Test());
    R2<Test> retained(Test);

    return 0;
}

It still gives the same error. Is it easier to figure out why? Do you
need a hint? The code actually can be shortened even further:

    template<class T>
    class R2
    {
    protected:
       void Retain();
    };

    class Test
    {
       friend void R2<Test>::Retain();
    };

    int main()
    {
       R2<Test> r;
    }

Same error! Do you still not see it?

In class 'Test' the 'R2<Test>::Retain' is not accessible!!! It's
protected, and 'Test' is not derived from 'R2<Test>'.

Simple as that...

V
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