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, const tuple&);
15
16// UNSUPPORTED: c++03
17
18#include <tuple>
19#include <cassert>
20
21#include "test_macros.h"
22#include "allocators.h"
23#include "../alloc_first.h"
24#include "../alloc_last.h"
25
26int main(int, char**)
27{
28 {
29 typedef std::tuple<> T;
30 T t0;
31 T t(std::allocator_arg, A1<int>(), t0);
32 }
33 {
34 typedef std::tuple<int> T;
35 T t0(2);
36 T t(std::allocator_arg, A1<int>(), t0);
37 assert(std::get<0>(t) == 2);
38 }
39 {
40 typedef std::tuple<alloc_first> T;
41 T t0(2);
42 alloc_first::allocator_constructed = false;
43 T t(std::allocator_arg, A1<int>(5), t0);
44 assert(alloc_first::allocator_constructed);
45 assert(std::get<0>(t) == 2);
46 }
47 {
48 typedef std::tuple<alloc_last> T;
49 T t0(2);
50 alloc_last::allocator_constructed = false;
51 T t(std::allocator_arg, A1<int>(5), t0);
52 assert(alloc_last::allocator_constructed);
53 assert(std::get<0>(t) == 2);
54 }
55 {
56 typedef std::tuple<alloc_first, alloc_last> T;
57 T t0(2, 3);
58 alloc_first::allocator_constructed = false;
59 alloc_last::allocator_constructed = false;
60 T t(std::allocator_arg, A1<int>(5), t0);
61 assert(alloc_first::allocator_constructed);
62 assert(alloc_last::allocator_constructed);
63 assert(std::get<0>(t) == 2);
64 assert(std::get<1>(t) == 3);
65 }
66 {
67 typedef std::tuple<int, alloc_first, alloc_last> T;
68 T t0(1, 2, 3);
69 alloc_first::allocator_constructed = false;
70 alloc_last::allocator_constructed = false;
71 T t(std::allocator_arg, A1<int>(5), t0);
72 assert(alloc_first::allocator_constructed);
73 assert(alloc_last::allocator_constructed);
74 assert(std::get<0>(t) == 1);
75 assert(std::get<1>(t) == 2);
76 assert(std::get<2>(t) == 3);
77 }
78 {
79 // Test that we can use a tag derived from allocator_arg_t
80 struct DerivedFromAllocatorArgT : std::allocator_arg_t { };
81 DerivedFromAllocatorArgT derived;
82 std::tuple<int> from(3);
83 std::tuple<int> t0(derived, A1<int>(), from);
84 }
85
86 return 0;
87}
88

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