5 struct classify_function {  struct
10 struct classify_function<R(Args...)> {  argument
15 struct classify_function<R(Args...) const> {  struct
20 struct classify_function<R(Args...) volatile> {  struct
25 struct classify_function<R(Args...) const volatile> {  argument
30 struct classify_function<R(Args..., ...)> {  argument
35 struct classify_function<R(Args..., ...) const> {  struct
40 struct classify_function<R(Args..., ...) volatile> {  argument
45 struct classify_function<R(Args..., ...) const volatile> {  argument
50 struct classify_function<R(Args..., ...) &&> {  argument
55 struct classify_function<R(Args..., ...) const &> {  argument
64 int check0[classify_function<f0>::value == 2? 1 : -1];  argument