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 Alloc>
14// tuple(allocator_arg_t, const Alloc& a, tuple&&);
15
16// UNSUPPORTED: c++03
17
18#include <tuple>
19#include <cassert>
20
21#include "test_macros.h"
22#include "MoveOnly.h"
23#include "allocators.h"
24#include "../alloc_first.h"
25#include "../alloc_last.h"
26
27int main(int, char**)
28{
29 {
30 typedef std::tuple<> T;
31 T t0;
32 T t(std::allocator_arg, A1<int>(), std::move(t0));
33 }
34 {
35 typedef std::tuple<MoveOnly> T;
36 T t0(MoveOnly(0));
37 T t(std::allocator_arg, A1<int>(), std::move(t0));
38 assert(std::get<0>(t) == 0);
39 }
40 {
41 typedef std::tuple<alloc_first> T;
42 T t0(1);
43 alloc_first::allocator_constructed = false;
44 T t(std::allocator_arg, A1<int>(5), std::move(t0));
45 assert(alloc_first::allocator_constructed);
46 assert(std::get<0>(t) == 1);
47 }
48 {
49 typedef std::tuple<alloc_last> T;
50 T t0(1);
51 alloc_last::allocator_constructed = false;
52 T t(std::allocator_arg, A1<int>(5), std::move(t0));
53 assert(alloc_last::allocator_constructed);
54 assert(std::get<0>(t) == 1);
55 }
56 {
57 typedef std::tuple<MoveOnly, alloc_first> T;
58 T t0(0 ,1);
59 alloc_first::allocator_constructed = false;
60 T t(std::allocator_arg, A1<int>(5), std::move(t0));
61 assert(alloc_first::allocator_constructed);
62 assert(std::get<0>(t) == 0);
63 assert(std::get<1>(t) == 1);
64 }
65 {
66 typedef std::tuple<MoveOnly, alloc_first, alloc_last> T;
67 T t0(1, 2, 3);
68 alloc_first::allocator_constructed = false;
69 alloc_last::allocator_constructed = false;
70 T t(std::allocator_arg, A1<int>(5), std::move(t0));
71 assert(alloc_first::allocator_constructed);
72 assert(alloc_last::allocator_constructed);
73 assert(std::get<0>(t) == 1);
74 assert(std::get<1>(t) == 2);
75 assert(std::get<2>(t) == 3);
76 }
77 {
78 // Test that we can use a tag derived from allocator_arg_t
79 struct DerivedFromAllocatorArgT : std::allocator_arg_t { };
80 DerivedFromAllocatorArgT derived;
81 std::tuple<int> from(3);
82 std::tuple<int> t0(derived, A1<int>(), std::move(from));
83 }
84
85 return 0;
86}
87

source code of libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/alloc_move.pass.cpp