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1 | // { dg-do run { target c++14 } } | |
2 | ||
3 | // Copyright (C) 2013-2017 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 <experimental/optional> | |
21 | #include <testsuite_hooks.h> | |
22 | ||
23 | struct tracker | |
24 | { | |
25 | tracker() { ++count; } | |
26 | ~tracker() { --count; } | |
27 | ||
28 | tracker(tracker const&) { ++count; } | |
29 | tracker(tracker&&) { ++count; } | |
30 | ||
31 | tracker& operator=(tracker const&) = default; | |
32 | tracker& operator=(tracker&&) = default; | |
33 | ||
34 | static int count; | |
35 | }; | |
36 | ||
37 | int tracker::count = 0; | |
38 | ||
39 | int main() | |
40 | { | |
41 | // [20.5.4.1] Constructors | |
42 | ||
43 | { | |
44 | std::experimental::optional<tracker> o; | |
45 | VERIFY( !o ); | |
46 | } | |
47 | ||
48 | { | |
49 | std::experimental::optional<tracker> o {}; | |
50 | VERIFY( !o ); | |
51 | } | |
52 | ||
53 | { | |
54 | std::experimental::optional<tracker> o = {}; | |
55 | VERIFY( !o ); | |
56 | } | |
57 | ||
58 | VERIFY( tracker::count == 0 ); | |
59 | } |