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1 | // { dg-do run { target c++11 } } | |
2 | ||
3 | // Copyright (C) 2014-2020 Free Software Foundation, Inc. | |
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 <set> | |
21 | #include <stdexcept> | |
22 | ||
23 | struct Comparator | |
24 | { | |
25 | Comparator() : valid(false) { } | |
26 | explicit Comparator(bool) : valid(true) { } | |
27 | ||
28 | bool operator()(int i, int j) const | |
29 | { | |
30 | if (!valid) | |
31 | throw std::logic_error("Comparator is invalid"); | |
32 | return i < j; | |
33 | } | |
34 | ||
35 | private: | |
36 | bool valid; | |
37 | }; | |
38 | ||
39 | int main() | |
40 | { | |
41 | using test_type = std::set<int, Comparator>; | |
42 | ||
43 | Comparator cmp{true}; | |
44 | ||
45 | test_type good{cmp}; | |
46 | ||
47 | test_type s1; | |
48 | s1 = good; // copy-assign | |
49 | s1.insert(1); | |
50 | s1.insert(2); | |
51 | ||
52 | test_type s2; | |
53 | s2 = std::move(good); // move-assign | |
54 | s2.insert(1); | |
55 | s2.insert(2); | |
56 | } |