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template<int src, int dst>
struct move_disc
{
    struct lol
    {
    	lol()
    	{
    		move_disc<src, dst>::rotfl;
    	}
    };
};
 
template<int n, int src, int tmp, int dst>
struct hanoi
{
    hanoi<n-1, src, dst, tmp> before;
    typename move_disc<src, dst>::lol disc;
    hanoi<n-1, tmp, src, dst> after;
};
 
template<int src, int tmp, int dst>
struct hanoi<0, src, tmp, dst>
{
    // recursive base case
};
 
hanoi<3, 1, 2, 3> go;
 

prog.cpp: In instantiation of ‘move_disc<src, dst>::lol::lol() [with int src = 1; int dst = 3]’:
prog.cpp:14:8:   required from here
prog.cpp:8:7: error: ‘rotfl’ is not a member of ‘move_disc<1, 3>’
       move_disc<src, dst>::rotfl;
       ^
prog.cpp: In instantiation of ‘move_disc<src, dst>::lol::lol() [with int src = 1; int dst = 2]’:
prog.cpp:14:8:   required from here
prog.cpp:8:7: error: ‘rotfl’ is not a member of ‘move_disc<1, 2>’
prog.cpp: In instantiation of ‘move_disc<src, dst>::lol::lol() [with int src = 3; int dst = 2]’:
prog.cpp:14:8:   required from here
prog.cpp:8:7: error: ‘rotfl’ is not a member of ‘move_disc<3, 2>’
prog.cpp: In instantiation of ‘move_disc<src, dst>::lol::lol() [with int src = 2; int dst = 1]’:
prog.cpp:14:8:   required from here
prog.cpp:8:7: error: ‘rotfl’ is not a member of ‘move_disc<2, 1>’
prog.cpp: In instantiation of ‘move_disc<src, dst>::lol::lol() [with int src = 2; int dst = 3]’:
prog.cpp:14:8:   required from here
prog.cpp:8:7: error: ‘rotfl’ is not a member of ‘move_disc<2, 3>’

Standard output is empty