address of overloaded function with no contextual type information

[Adam Burr <adamb@blueskystudios.com>]

Does anyone know what I'm doing wrong here?


#include <iostream>

template< typename T >
struct thingA
{
    template< int I >
    static int doA () {return I;}

    struct thingB
    {
        void doB ()
        {
            // this line does not compile:
            int (*doAPtr) () = &thingA< T >::doA< 2 >;
            std::cerr << (*doAPtr) () << std::endl;
        }
    };
};

int main (int, char **)
{
    thingA< int >::thingB a;
    a.doB ();
}


This is a contrived example but in the "real world" I do need to get a 
pointer to a static template function inside a template class like this.


Here is the gcc error:

main.cc: In member function 'void thingA<T>::thingB::doB()':
main.cc:14: error: expected primary-expression before ';' token
main.cc: In member function 'void thingA<T>::thingB::doB() [with T = int]':
main.cc:23:   instantiated from here
main.cc:14: error: address of overloaded function with no contextual 
type information


Any help is appreciated.

Thanks,
Adam Burr
Blue Sky Studios