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// <utility>
11
12// template <class T1, class T2> struct pair
13
14// struct piecewise_construct_t { };
15// constexpr piecewise_construct_t piecewise_construct = piecewise_construct_t();
16
17#include <utility>
18#include <tuple>
19#include <cassert>
20
21class A
22{
23    int i_;
24    char c_;
25public:
26    A(int i, char c) : i_(i), c_(c) {}
27    int get_i() const {return i_;}
28    char get_c() const {return c_;}
29};
30
31class B
32{
33    double d_;
34    unsigned u1_;
35    unsigned u2_;
36public:
37    B(double d, unsigned u1, unsigned u2) : d_(d), u1_(u1), u2_(u2) {}
38    double get_d() const {return d_;}
39    unsigned get_u1() const {return u1_;}
40    unsigned get_u2() const {return u2_;}
41};
42
43int main()
44{
45#ifndef _LIBCPP_HAS_NO_VARIADICS
46    std::pair<A, B> p(std::piecewise_construct,
47                      std::make_tuple(4, 'a'),
48                      std::make_tuple(3.5, 6u, 2u));
49    assert(p.first.get_i() == 4);
50    assert(p.first.get_c() == 'a');
51    assert(p.second.get_d() == 3.5);
52    assert(p.second.get_u1() == 6u);
53    assert(p.second.get_u2() == 2u);
54#endif
55}
56