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cb0de9b6 JW |
1 | // { dg-options "-std=gnu++2a" } |
2 | // { dg-do compile { target c++2a } } | |
3 | ||
7adcbafe | 4 | // Copyright (C) 2019-2022 Free Software Foundation, Inc. |
cb0de9b6 JW |
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 <array> | |
22 | ||
23 | #ifndef __cpp_lib_to_array | |
24 | # error "Feature test macro for to_array is missing" | |
25 | #elif __cpp_lib_to_array < 201907L | |
26 | # error "Feature test macro for to_array has wrong value" | |
27 | #endif | |
28 | ||
29 | void test01() | |
30 | { | |
31 | const char x[6]{}; | |
32 | std::array<char, 6> y = std::to_array(x); | |
33 | ||
34 | constexpr char x2[] = "foo"; | |
35 | constexpr std::array<char, 4> y2 = std::to_array(x2); | |
36 | static_assert( std::equal(y2.begin(), y2.end(), x2) ); | |
37 | } | |
38 | ||
39 | void | |
40 | test02() | |
41 | { | |
42 | struct MoveOnly | |
43 | { | |
44 | constexpr MoveOnly(int i = 0) : i(i) { } | |
45 | constexpr MoveOnly(MoveOnly&& m) : i(m.i + 100) { } | |
46 | int i; | |
47 | }; | |
48 | ||
49 | struct X { | |
50 | MoveOnly m[3]; | |
51 | }; | |
52 | X x; | |
53 | std::array<MoveOnly, 3> y = std::to_array(std::move(x).m); | |
54 | ||
55 | constexpr std::array<MoveOnly, 3> y2 = std::to_array(X{{1, 2, 3}}.m); | |
56 | static_assert( y2[0].i == 101 && y2[1].i == 102 && y2[2].i == 103 ); | |
57 | } |