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435e56fb | 1 | // { dg-options "-std=gnu++17" } |
47df7e19 | 2 | // { dg-do run { target c++17 } } |
435e56fb | 3 | |
8d9254fc | 4 | // Copyright (C) 2013-2020 Free Software Foundation, Inc. |
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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 | ||
c7cbb4da | 17 | // You should have received a copy of the GNU General Public License along |
435e56fb VV |
18 | // with this library; see the file COPYING3. If not see |
19 | // <http://www.gnu.org/licenses/>. | |
20 | ||
21 | #include <optional> | |
22 | #include <testsuite_hooks.h> | |
25a69162 VV |
23 | #include <vector> |
24 | #include <tuple> | |
25 | ||
26 | struct combined { | |
27 | std::vector<int> v; | |
28 | std::tuple<int, int> t; | |
29 | template<class... Args> | |
30 | combined(std::initializer_list<int> il, Args&&... args) | |
31 | : v(il), t(std::forward<Args>(args)...) | |
32 | { | |
33 | } | |
34 | }; | |
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35 | |
36 | int main() | |
37 | { | |
38 | const int i = 42; | |
39 | auto o = std::make_optional(i); | |
40 | static_assert( std::is_same<decltype(o), std::optional<int>>(), "" ); | |
41 | VERIFY( o && *o == 42 ); | |
42 | VERIFY( &*o != &i ); | |
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43 | auto o2 = std::make_optional<std::tuple<int, int>>(1, 2); |
44 | static_assert( std::is_same<decltype(o2), | |
45 | std::optional<std::tuple<int, int>>>(), "" ); | |
46 | VERIFY( o2 && std::get<0>(*o2) == 1 && std::get<1>(*o2) == 2); | |
47 | auto o3 = std::make_optional<std::vector<int>>({42, 666}); | |
48 | static_assert( std::is_same<decltype(o3), | |
49 | std::optional<std::vector<int>>>(), "" ); | |
50 | VERIFY(o3 && (*o3)[0] == 42 && (*o3)[1] == 666); | |
51 | auto o4 = std::make_optional<combined>({42, 666}); | |
52 | static_assert( std::is_same<decltype(o4), | |
53 | std::optional<combined>>(), "" ); | |
54 | VERIFY(o4 && (o4->v)[0] == 42 && (o4->v)[1] == 666 | |
55 | && std::get<0>(o4->t) == 0 && std::get<1>(o4->t) == 0 ); | |
56 | auto o5 = std::make_optional<combined>({1, 2}, 3, 4); | |
57 | static_assert( std::is_same<decltype(o5), | |
58 | std::optional<combined>>(), "" ); | |
59 | VERIFY(o4 && (o5->v)[0] == 1 && (o5->v)[1] == 2 | |
60 | && std::get<0>(o5->t) == 3 && std::get<1>(o5->t) == 4 ); | |
435e56fb | 61 | } |