1 // PR c++/68965 2 // { dg-do compile { target c++14 } } 3 // { dg-options "-Wall -Wextra" } 4 5 auto count = [](auto&&... xs) 6 { 7 return sizeof...(xs); 8 }; 9 10 struct count_struct 11 { 12 template<typename... Ts> operatorcount_struct13 auto operator()(Ts&&... xs) 14 { 15 return sizeof...(xs); 16 } 17 }; 18 main()19int main() 20 { 21 count(1,2,3); 22 count_struct{}(1,2,3); 23 } 24