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//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// <tuple>
// template <class... Types> class tuple;
// template<class... Types>
// tuple<VTypes...> make_tuple(Types&&... t);
// UNSUPPORTED: c++98, c++03
#include <tuple>
#include <functional>
#include <cassert>
#include "test_macros.h"
int main()
{
{
int i = 0;
float j = 0;
std::tuple<int, int&, float&> t = std::make_tuple(1, std::ref(i),
std::ref(j));
assert(std::get<0>(t) == 1);
assert(std::get<1>(t) == 0);
assert(std::get<2>(t) == 0);
i = 2;
j = 3.5;
assert(std::get<0>(t) == 1);
assert(std::get<1>(t) == 2);
assert(std::get<2>(t) == 3.5);
std::get<1>(t) = 0;
std::get<2>(t) = 0;
assert(i == 0);
assert(j == 0);
}
#if TEST_STD_VER > 11
{
constexpr auto t1 = std::make_tuple(0, 1, 3.14);
constexpr int i1 = std::get<1>(t1);
constexpr double d1 = std::get<2>(t1);
static_assert (i1 == 1, "" );
static_assert (d1 == 3.14, "" );
}
#endif
}
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