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a945c346 | 1 | // Copyright (C) 2019-2024 Free Software Foundation, Inc. |
ee2f721c JW |
2 | // |
3 | // This file is part of the GNU ISO C++ Library. This library is free | |
4 | // software; you can redistribute it and/or modify it under the | |
5 | // terms of the GNU General Public License as published by the | |
6 | // Free Software Foundation; either version 3, or (at your option) | |
7 | // any later version. | |
8 | ||
9 | // This library is distributed in the hope that it will be useful, | |
10 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | // GNU General Public License for more details. | |
13 | ||
14 | // You should have received a copy of the GNU General Public License along | |
15 | // with this library; see the file COPYING3. If not see | |
16 | // <http://www.gnu.org/licenses/>. | |
17 | ||
6d0b43f5 | 18 | // { dg-do run { target c++20 } } |
ee2f721c | 19 | |
3addb7b9 JW |
20 | // P0591R4 makes uses-allocator construction apply recursively for nested pairs |
21 | ||
ee2f721c JW |
22 | #include <scoped_allocator> |
23 | #include <vector> | |
24 | #include <testsuite_hooks.h> | |
25 | #include <testsuite_allocator.h> | |
26 | ||
27 | struct X | |
28 | { | |
29 | using allocator_type = __gnu_test::uneq_allocator<int>; | |
30 | ||
31 | X(int personality) : a(personality) { } | |
32 | X(std::allocator_arg_t, allocator_type a) : a(a) { } | |
33 | X(std::allocator_arg_t, allocator_type a, const X&) : a(a) { } | |
34 | ||
35 | allocator_type a; | |
36 | }; | |
37 | ||
38 | void | |
39 | test01() | |
40 | { | |
41 | using value_type = std::pair<std::pair<X, int>, std::pair<int, X>>; | |
42 | using scoped_alloc | |
43 | = std::scoped_allocator_adaptor<__gnu_test::uneq_allocator<value_type>>; | |
44 | ||
45 | const scoped_alloc a(10); | |
46 | std::vector<value_type, scoped_alloc> v(a); | |
47 | VERIFY( v.get_allocator().get_personality() == a.get_personality() ); | |
48 | ||
49 | value_type val( { X(1), 2 }, { 3, X(4) } ); | |
50 | v.push_back(val); | |
51 | X& x1 = v.back().first.first; | |
52 | VERIFY( x1.a.get_personality() != val.first.first.a.get_personality() ); | |
53 | VERIFY( x1.a.get_personality() == a.get_personality() ); | |
54 | ||
55 | X& x2 = v.back().second.second; | |
56 | VERIFY( x2.a.get_personality() != val.second.second.a.get_personality() ); | |
57 | VERIFY( x2.a.get_personality() == a.get_personality() ); | |
58 | ||
59 | // Check other members of the pairs are correctly initialized too: | |
60 | VERIFY( v.back().first.second == val.first.second ); | |
61 | VERIFY( v.back().second.first == val.second.first ); | |
62 | } | |
63 | ||
64 | void | |
65 | test02() | |
66 | { | |
67 | using value_type = std::pair<std::pair<X, int>, std::pair<int, X>>; | |
68 | using scoped_alloc | |
69 | = std::scoped_allocator_adaptor<__gnu_test::uneq_allocator<value_type>, | |
70 | X::allocator_type>; | |
71 | ||
72 | const scoped_alloc a(10, 20); | |
73 | std::vector<value_type, scoped_alloc> v(a); | |
74 | VERIFY( v.get_allocator().get_personality() == a.get_personality() ); | |
75 | ||
76 | value_type val( { X(1), 2 }, { 3, X(4) } ); | |
77 | v.push_back(val); | |
78 | X& x1 = v.back().first.first; | |
79 | VERIFY( x1.a.get_personality() != val.first.first.a.get_personality() ); | |
80 | VERIFY( x1.a.get_personality() != a.get_personality() ); | |
81 | VERIFY( x1.a.get_personality() == a.inner_allocator().get_personality() ); | |
82 | ||
83 | X& x2 = v.back().second.second; | |
84 | VERIFY( x2.a.get_personality() != val.second.second.a.get_personality() ); | |
85 | VERIFY( x2.a.get_personality() != a.get_personality() ); | |
86 | VERIFY( x2.a.get_personality() == a.inner_allocator().get_personality() ); | |
87 | ||
88 | // Check other members of the pairs are correctly initialized too: | |
89 | VERIFY( v.back().first.second == val.first.second ); | |
90 | VERIFY( v.back().second.first == val.second.first ); | |
91 | } | |
92 | ||
93 | int | |
94 | main() | |
95 | { | |
96 | test01(); | |
97 | test02(); | |
98 | } |