1 //===----------------------------------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8
9 // UNSUPPORTED: c++03
10
11 // <tuple>
12
13 // template <class... Types>
14 // class tuple_size<tuple<Types...>>
15 // : public integral_constant<size_t, sizeof...(Types)> { };
16
17 // Expect failures with a reference type, pointer type, and a non-tuple type.
18
19 #include <tuple>
20
main(int,char **)21 int main(int, char**)
22 {
23 (void)std::tuple_size<std::tuple<> &>::value; // expected-error {{implicit instantiation of undefined template}}
24 (void)std::tuple_size<int>::value; // expected-error {{implicit instantiation of undefined template}}
25 (void)std::tuple_size<std::tuple<>*>::value; // expected-error {{implicit instantiation of undefined template}}
26
27 return 0;
28 }
29