1 //===----------------------------------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is dual licensed under the MIT and the University of Illinois Open 6 // Source Licenses. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 // UNSUPPORTED: c++98, c++03, c++11, c++14 11 12 // <tuple> 13 14 // template <class T> constexpr size_t tuple_size_v = tuple_size<T>::value; 15 16 // Expect failures with a reference type, pointer type, and a non-tuple type. 17 18 #include <tuple> 19 20 int main() 21 { 22 (void)std::tuple_size_v<std::tuple<> &>; // expected-note {{requested here}} 23 (void)std::tuple_size_v<int>; // expected-note {{requested here}} 24 (void)std::tuple_size_v<std::tuple<>*>; // expected-note {{requested here}} 25 // expected-error@tuple:* 3 {{implicit instantiation of undefined template}} 26 } 27
