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47df7e19 | 1 | // { dg-do run { target c++17 } } |
71ade764 | 2 | |
99dee823 | 3 | // Copyright (C) 2016-2021 Free Software Foundation, Inc. |
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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 | ||
c7cbb4da | 16 | // You should have received a copy of the GNU General Public License along |
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17 | // with this library; see the file COPYING3. If not see |
18 | // <http://www.gnu.org/licenses/>. | |
19 | ||
20 | #include <optional> | |
21 | #include <testsuite_hooks.h> | |
22 | ||
23 | ||
24 | struct NonTransferable | |
25 | { | |
26 | int x; | |
27 | NonTransferable(int x) : x(x) {} | |
28 | NonTransferable(NonTransferable&&) = delete; | |
29 | NonTransferable& operator=(NonTransferable&&) = delete; | |
30 | operator int() {return x;} | |
31 | }; | |
32 | ||
33 | int main() | |
34 | { | |
35 | std::optional<int> oi; | |
36 | std::optional<NonTransferable> ot(std::move(oi)); | |
37 | VERIFY(!ot); | |
38 | ||
39 | std::optional<int> oi2; | |
40 | std::optional<NonTransferable> ot2(oi2); | |
41 | VERIFY(!ot); | |
42 | ||
43 | std::optional<int> oi3{42}; | |
44 | std::optional<NonTransferable> ot3(std::move(oi3)); | |
45 | VERIFY(ot3 && *ot3 == 42); | |
46 | ||
47 | std::optional<int> oi4{666}; | |
48 | std::optional<NonTransferable> ot4(oi4); | |
49 | VERIFY(ot4 && *ot4 == 666); | |
50 | } |