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, c++11, c++14
10
11 // <tuple>
12
13 // template <class T> constexpr size_t tuple_size_v = tuple_size<T>::value;
14
15 // Expect failures with a reference type, pointer type, and a non-tuple type.
16
17 #include <tuple>
18
f()19 void f() {
20 (void)std::tuple_size_v<std::tuple<>&>; // expected-note {{requested here}}
21 (void)std::tuple_size_v<int>; // expected-note {{requested here}}
22 (void)std::tuple_size_v<std::tuple<>*>; // expected-note {{requested here}}
23 // expected-error@*:* 3 {{implicit instantiation of undefined template}}
24 }
25