move_pair.pass.cpp revision f5256e16dfc425c1d466f6308d4026d529ce9e0b 
1//===----------------------------------------------------------------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. 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#include <tuple>
17#include <utility>
18#include <memory>
19#include <cassert>
20
21struct B
22{
23    int id_;
24
25    explicit B(int i) : id_(i) {}
26
27    virtual ~B() {}
28};
29
30struct D
31    : B
32{
33    explicit D(int i) : B(i) {}
34};
35
36
37int main()
38{
39    {
40        typedef std::pair<double, std::unique_ptr<D>> T0;
41        typedef std::tuple<int, std::unique_ptr<B>> T1;
42        T0 t0(2.5, std::unique_ptr<D>(new D(3)));
43        T1 t1 = std::move(t0);
44        assert(std::get<0>(t1) == 2);
45        assert(std::get<1>(t1)->id_ == 3);
46    }
47}
48