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52066eae | 1 | // { dg-do run { target c++11 } } |
097e8994 | 2 | |
8d9254fc | 3 | // Copyright (C) 2016-2020 Free Software Foundation, Inc. |
097e8994 FD |
4 | // |
5 | // This file is part of the GNU ISO C++ Library. This library is free | |
6 | // software; you can redistribute it and/or modify it under the | |
7 | // terms of the GNU General Public License as published by the | |
8 | // Free Software Foundation; either version 3, or (at your option) | |
9 | // any later version. | |
10 | ||
11 | // This library is distributed in the hope that it will be useful, | |
12 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | // GNU General Public License for more details. | |
15 | ||
16 | // You should have received a copy of the GNU General Public License along | |
17 | // with this library; see the file COPYING3. If not see | |
18 | // <http://www.gnu.org/licenses/>. | |
19 | ||
20 | #include <vector> | |
21 | #include "testsuite_hooks.h" | |
22 | ||
097e8994 FD |
23 | void |
24 | test01() | |
25 | { | |
26 | std::vector<std::vector<int>> vv = | |
27 | { | |
28 | { 2, 3 }, | |
29 | { 4, 5 }, | |
30 | { 0, 1 } | |
31 | }; | |
32 | ||
33 | // Make sure emplace will imply reallocation. | |
34 | VERIFY( vv.capacity() == 3 ); | |
35 | ||
36 | vv.emplace(vv.begin(), vv[0]); | |
37 | ||
38 | VERIFY( vv.size() == 4 ); | |
39 | VERIFY( vv[0].size() == 2 ); | |
40 | VERIFY( vv[0][0] == 2 ); | |
41 | VERIFY( vv[0][1] == 3 ); | |
42 | } | |
43 | ||
44 | void | |
45 | test02() | |
46 | { | |
47 | std::vector<std::vector<int>> vv = | |
48 | { | |
49 | { 2, 3 }, | |
50 | { 4, 5 }, | |
51 | { 0, 1 } | |
52 | }; | |
53 | ||
54 | // Make sure emplace won't reallocate. | |
55 | vv.reserve(4); | |
56 | vv.emplace(vv.begin(), vv[0]); | |
57 | ||
58 | VERIFY( vv.size() == 4 ); | |
59 | VERIFY( vv[0].size() == 2 ); | |
60 | VERIFY( vv[0][0] == 2 ); | |
61 | VERIFY( vv[0][1] == 3 ); | |
62 | } | |
63 | ||
64 | struct A | |
65 | { | |
66 | A(int i) : _i(i) | |
67 | { } | |
68 | ||
69 | A(const A& other) : _i(other._i) | |
70 | { | |
71 | VERIFY( other._i >= 0 ); | |
72 | } | |
73 | ||
74 | A(A&& other) : _i(other._i) | |
75 | { | |
76 | VERIFY( other._i >= 0 ); | |
77 | ||
78 | other._i = -1; | |
79 | } | |
80 | ||
81 | A(std::vector<A>::iterator it) : _i(it->_i) | |
82 | { | |
83 | VERIFY( it->_i >= 0 ); | |
84 | } | |
85 | ||
86 | A& operator=(const A&) = default; | |
87 | A& operator=(A&& other) | |
88 | { | |
89 | VERIFY(other._i >= 0 ); | |
90 | ||
91 | _i = other._i; | |
92 | other._i = -1; | |
93 | return *this; | |
94 | } | |
95 | ||
96 | int _i; | |
97 | }; | |
98 | ||
99 | void | |
100 | test03() | |
101 | { | |
102 | std::vector<A> va = | |
103 | { | |
104 | { A(1) }, | |
105 | { A(2) }, | |
106 | { A(3) } | |
107 | }; | |
108 | ||
109 | // Make sure emplace will imply reallocation. | |
110 | VERIFY( va.capacity() == 3 ); | |
111 | ||
112 | va.emplace(va.begin(), va.begin()); | |
113 | ||
114 | VERIFY( va.size() == 4 ); | |
115 | VERIFY( va[0]._i == 1 ); | |
116 | } | |
117 | ||
118 | void | |
119 | test04() | |
120 | { | |
121 | std::vector<A> va = | |
122 | { | |
123 | { A(1) }, | |
124 | { A(2) }, | |
125 | { A(3) } | |
126 | }; | |
127 | ||
128 | // Make sure emplace won't reallocate. | |
129 | va.reserve(4); | |
130 | va.emplace(va.begin(), va.begin()); | |
131 | ||
132 | VERIFY( va.size() == 4 ); | |
133 | VERIFY( va[0]._i == 1 ); | |
134 | } | |
135 | ||
17b31c05 JW |
136 | void |
137 | test05() | |
138 | { | |
139 | // LWG DR 2164 | |
140 | std::vector<int> v; | |
141 | v.reserve(4); | |
142 | v = { 1, 2, 3 }; | |
143 | v.emplace(v.begin(), v.back()); | |
144 | VERIFY( v[0] == 3 ); | |
145 | VERIFY( v[1] == 1 ); | |
146 | VERIFY( v[2] == 2 ); | |
147 | VERIFY( v[3] == 3 ); | |
148 | } | |
149 | ||
097e8994 FD |
150 | int main() |
151 | { | |
152 | test01(); | |
153 | test02(); | |
154 | test03(); | |
155 | test04(); | |
156 | } |