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
11
12// <experimental/tuple>
13
14// template <class T> constexpr size_t tuple_size_v = tuple_size<T>::value;
15
16// Test with reference
17
18#include <experimental/tuple>
19
20namespace ex = std::experimental;
21
22int main()
23{
24    auto x = ex::tuple_size_v<std::tuple<> &>;
25}
26