]>
Commit | Line | Data |
---|---|---|
15d9538c | 1 | // { dg-options "-std=gnu++14" } |
e3f166cf | 2 | // { dg-do compile } |
3 | ||
f1717362 | 4 | // Copyright (C) 2013-2016 Free Software Foundation, Inc. |
e3f166cf | 5 | // |
6 | // This file is part of the GNU ISO C++ Library. This library is free | |
7 | // software; you can redistribute it and/or modify it under the | |
8 | // terms of the GNU General Public License as published by the | |
9 | // Free Software Foundation; either version 3, or (at your option) | |
10 | // any later version. | |
11 | ||
12 | // This library is distributed in the hope that it will be useful, | |
13 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | // GNU General Public License for more details. | |
16 | ||
17 | // You should have received a copy of the GNU General Public License along | |
18 | // with this library; see the file COPYING3. If not see | |
19 | // <http://www.gnu.org/licenses/>. | |
20 | ||
21 | #include <experimental/optional> | |
22 | #include <testsuite_hooks.h> | |
23 | ||
24 | int main() | |
25 | { | |
26 | // [20.5.6] Disengaged state indicator | |
27 | static_assert( std::is_same<decltype(std::experimental::nullopt), const std::experimental::nullopt_t>(), "" ); | |
28 | static_assert( std::is_empty<std::experimental::nullopt_t>(), "" ); | |
29 | static_assert( std::is_literal_type<std::experimental::nullopt_t>(), "" ); | |
30 | static_assert( !std::is_default_constructible<std::experimental::nullopt_t>(), "" ); | |
31 | ||
32 | { | |
33 | constexpr std::experimental::optional<int> o = std::experimental::nullopt; | |
34 | static_assert( !o, "" ); | |
35 | } | |
36 | ||
37 | { | |
38 | constexpr std::experimental::optional<int> o = { std::experimental::nullopt }; | |
39 | static_assert( !o, "" ); | |
40 | } | |
41 | ||
42 | { | |
43 | constexpr std::experimental::optional<int> o { std::experimental::nullopt }; | |
44 | static_assert( !o, "" ); | |
45 | } | |
46 | } |