1 //===----------------------------------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8
9 // <tuple>
10
11 // template <class... Types> class tuple;
12
13 // template <class U1, class U2> tuple(pair<U1, U2>&& u);
14
15 // UNSUPPORTED: c++03
16
17 #include <tuple>
18 #include <utility>
19 #include <memory>
20 #include <cassert>
21
22 #include "test_macros.h"
23
24 struct B
25 {
26 int id_;
27
BB28 explicit B(int i) : id_(i) {}
29
~BB30 virtual ~B() {}
31 };
32
33 struct D
34 : B
35 {
DD36 explicit D(int i) : B(i) {}
37 };
38
main(int,char **)39 int main(int, char**)
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 = std::move(t0);
46 assert(std::get<0>(t1) == 2);
47 assert(std::get<1>(t1)->id_ == 3);
48 }
49
50 #if TEST_STD_VER > 11
51 {
52 using pair_t = std::pair<int, char>;
53 constexpr std::tuple<long, long> t(pair_t(0, 'a'));
54 static_assert(std::get<0>(t) == 0, "");
55 static_assert(std::get<1>(t) == 'a', "");
56 }
57 #endif
58
59 return 0;
60 }
61