1 // Copyright (C) 2019 Free Software Foundation, Inc.
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
18 // { dg-options "-std=gnu++2a" }
19 // { dg-do run { target c++2a } }
20
21 // P0591R4 makes uses-allocator construction apply recursively for nested pairs
22
23 #include <scoped_allocator>
24 #include <vector>
25 #include <testsuite_hooks.h>
26 #include <testsuite_allocator.h>
27
28 struct X
29 {
30 using allocator_type = __gnu_test::uneq_allocator<int>;
31
XX32 X(int personality) : a(personality) { }
XX33 X(std::allocator_arg_t, allocator_type a) : a(a) { }
XX34 X(std::allocator_arg_t, allocator_type a, const X&) : a(a) { }
35
36 allocator_type a;
37 };
38
39 void
test01()40 test01()
41 {
42 using value_type = std::pair<std::pair<X, int>, std::pair<int, X>>;
43 using scoped_alloc
44 = std::scoped_allocator_adaptor<__gnu_test::uneq_allocator<value_type>>;
45
46 const scoped_alloc a(10);
47 std::vector<value_type, scoped_alloc> v(a);
48 VERIFY( v.get_allocator().get_personality() == a.get_personality() );
49
50 value_type val( { X(1), 2 }, { 3, X(4) } );
51 v.push_back(val);
52 X& x1 = v.back().first.first;
53 VERIFY( x1.a.get_personality() != val.first.first.a.get_personality() );
54 VERIFY( x1.a.get_personality() == a.get_personality() );
55
56 X& x2 = v.back().second.second;
57 VERIFY( x2.a.get_personality() != val.second.second.a.get_personality() );
58 VERIFY( x2.a.get_personality() == a.get_personality() );
59
60 // Check other members of the pairs are correctly initialized too:
61 VERIFY( v.back().first.second == val.first.second );
62 VERIFY( v.back().second.first == val.second.first );
63 }
64
65 void
test02()66 test02()
67 {
68 using value_type = std::pair<std::pair<X, int>, std::pair<int, X>>;
69 using scoped_alloc
70 = std::scoped_allocator_adaptor<__gnu_test::uneq_allocator<value_type>,
71 X::allocator_type>;
72
73 const scoped_alloc a(10, 20);
74 std::vector<value_type, scoped_alloc> v(a);
75 VERIFY( v.get_allocator().get_personality() == a.get_personality() );
76
77 value_type val( { X(1), 2 }, { 3, X(4) } );
78 v.push_back(val);
79 X& x1 = v.back().first.first;
80 VERIFY( x1.a.get_personality() != val.first.first.a.get_personality() );
81 VERIFY( x1.a.get_personality() != a.get_personality() );
82 VERIFY( x1.a.get_personality() == a.inner_allocator().get_personality() );
83
84 X& x2 = v.back().second.second;
85 VERIFY( x2.a.get_personality() != val.second.second.a.get_personality() );
86 VERIFY( x2.a.get_personality() != a.get_personality() );
87 VERIFY( x2.a.get_personality() == a.inner_allocator().get_personality() );
88
89 // Check other members of the pairs are correctly initialized too:
90 VERIFY( v.back().first.second == val.first.second );
91 VERIFY( v.back().second.first == val.second.first );
92 }
93
94 int
main()95 main()
96 {
97 test01();
98 test02();
99 }
100