#define REGISTER_STAT(...) EVAL_REGISTER_STAT(OVERLOAD(REGISTER_STAT, __VA_ARGS__))
#define EVAL_REGISTER_STAT(...) __VA_ARGS__
#define REGISTER_STAT(...) EVAL_REGISTER_STAT(OVERLOAD(REGISTER_STAT, __VA_ARGS__))
#define EVAL_REGISTER_STAT(...) __VA_ARGS__