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52066eae | 1 | // { dg-do run { target c++14 } } |
2b5ab1e4 | 2 | |
cbe34bb5 | 3 | // Copyright (C) 2013-2017 Free Software Foundation, Inc. |
2b5ab1e4 MB |
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 | #include <vector> | |
24 | ||
25 | int main() | |
26 | { | |
27 | // [20.5.5] In-place construction | |
28 | static_assert( std::is_same<decltype(std::experimental::in_place), const std::experimental::in_place_t>(), "" ); | |
29 | static_assert( std::is_empty<std::experimental::in_place_t>(), "" ); | |
30 | ||
31 | { | |
32 | std::experimental::optional<int> o { std::experimental::in_place }; | |
33 | VERIFY( o ); | |
34 | VERIFY( *o == int() ); | |
35 | ||
36 | static_assert( !std::is_convertible<std::experimental::in_place_t, std::experimental::optional<int>>(), "" ); | |
37 | } | |
38 | ||
39 | { | |
40 | std::experimental::optional<int> o { std::experimental::in_place, 42 }; | |
41 | VERIFY( o ); | |
42 | VERIFY( *o == 42 ); | |
43 | } | |
44 | ||
45 | { | |
46 | std::experimental::optional<std::vector<int>> o { std::experimental::in_place, 18, 4 }; | |
47 | VERIFY( o ); | |
48 | VERIFY( o->size() == 18 ); | |
49 | VERIFY( (*o)[17] == 4 ); | |
50 | } | |
51 | ||
52 | { | |
53 | std::experimental::optional<std::vector<int>> o { std::experimental::in_place, { 18, 4 } }; | |
54 | VERIFY( o ); | |
55 | VERIFY( o->size() == 2 ); | |
56 | VERIFY( (*o)[0] == 18 ); | |
57 | } | |
58 | ||
59 | { | |
60 | std::experimental::optional<std::vector<int>> o { std::experimental::in_place, { 18, 4 }, std::allocator<int> {} }; | |
61 | VERIFY( o ); | |
62 | VERIFY( o->size() == 2 ); | |
63 | VERIFY( (*o)[0] == 18 ); | |
64 | } | |
65 | } |