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
11
12 // <utility>
13
14 // template <class T1, class T2> struct pair
15
16 // struct piecewise_construct_t { };
17 // constexpr piecewise_construct_t piecewise_construct = piecewise_construct_t();
18
19 #include <utility>
20 #include <tuple>
21 #include <cassert>
22
23 class A
24 {
25 int i_;
26 char c_;
27 public:
A(int i,char c)28 A(int i, char c) : i_(i), c_(c) {}
get_i() const29 int get_i() const {return i_;}
get_c() const30 char get_c() const {return c_;}
31 };
32
33 class B
34 {
35 double d_;
36 unsigned u1_;
37 unsigned u2_;
38 public:
B(double d,unsigned u1,unsigned u2)39 B(double d, unsigned u1, unsigned u2) : d_(d), u1_(u1), u2_(u2) {}
get_d() const40 double get_d() const {return d_;}
get_u1() const41 unsigned get_u1() const {return u1_;}
get_u2() const42 unsigned get_u2() const {return u2_;}
43 };
44
main()45 int main()
46 {
47 std::pair<A, B> p(std::piecewise_construct,
48 std::make_tuple(4, 'a'),
49 std::make_tuple(3.5, 6u, 2u));
50 assert(p.first.get_i() == 4);
51 assert(p.first.get_c() == 'a');
52 assert(p.second.get_d() == 3.5);
53 assert(p.second.get_u1() == 6u);
54 assert(p.second.get_u2() == 2u);
55 }
56