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// <tuple>
11
12// template <class... Types> class tuple;
13
14// template <class U1, class U2>
15//   tuple& operator=(pair<U1, U2>&& u);
16
17// UNSUPPORTED: c++98, c++03
18
19#include <tuple>
20#include <utility>
21#include <memory>
22#include <cassert>
23
24struct B
25{
26    int id_;
27
28    explicit B(int i = 0) : id_(i) {}
29
30    virtual ~B() {}
31};
32
33struct D
34    : B
35{
36    explicit D(int i) : B(i) {}
37};
38
39int main()
40{
41    {
42        typedef std::pair<long, std::unique_ptr<D>> T0;
43        typedef std::tuple<long long, std::unique_ptr<B>> T1;
44        T0 t0(2, std::unique_ptr<D>(new D(3)));
45        T1 t1;
46        t1 = std::move(t0);
47        assert(std::get<0>(t1) == 2);
48        assert(std::get<1>(t1)->id_ == 3);
49    }
50}
51