Some relevant discussion here: http://cboard.cprogramming.com/cplusplus-programming/134827-gcc-lets-you-forward-declare-struct-class-name.html http://cboard.cp

Some relevant discussion here: http://cboard.cprogramming.com/cplusplus-programming/134827-gcc-lets-you-forward-declare-struct-class-name.html http://cboard.cprogramming.com/cplusplus-programming/134827-...