move_pair.pass.cpp revision 0e8cbce107862187f8f75c1e8b7e49d11015d9f0 
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> tuple(pair<U1, U2>&& u);
15
16// UNSUPPORTED: c++98, c++03
17
18#include <tuple>
19#include <utility>
20#include <memory>
21#include <cassert>
22
23struct B
24{
25    int id_;
26
27    explicit B(int i) : id_(i) {}
28
29    virtual ~B() {}
30};
31
32struct D
33    : B
34{
35    explicit D(int i) : B(i) {}
36};
37
38int main()
39{
40    {
41        typedef std::pair<long, std::unique_ptr<D>> T0;
42        typedef std::tuple<long long, std::unique_ptr<B>> T1;
43        T0 t0(2, std::unique_ptr<D>(new D(3)));
44        T1 t1 = std::move(t0);
45        assert(std::get<0>(t1) == 2);
46        assert(std::get<1>(t1)->id_ == 3);
47    }
48}
49