🚀 go-pugleaf

When compiling the following with g++-2.3.1 I get warnings of the form:

quad.C: In method `Toplevel::Toplevel ()':
quad.C:27: warning: contravariance violation for method types ignored

What does it mean?

example:
////////////////////////////////////////////////////////////////////////
class Frame;
typedef void (Frame::*Codeblock)(void);

class Frame
{
protected:
    int         counter;

public:
    inline      Frame(Codeblock function);
};

class Toplevel : Frame
{
    int         i;
public:
                Toplevel(void);
    void        runtop(void);
};

Toplevel::Toplevel(void) : Frame(&(Toplevel::runtop))	// line 27
{

}

-seth