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6112b14e | 1 | // { dg-options "-std=gnu++11" } |
7ee204d2 | 2 | // { dg-do compile } |
3 | ||
f1717362 | 4 | // Copyright (C) 2012-2016 Free Software Foundation, Inc. |
7ee204d2 | 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 <type_traits> | |
22 | #include <array> | |
23 | #include <utility> | |
24 | ||
25 | template<typename... Args> | |
26 | constexpr | |
ddb23e9c | 27 | std::array<typename std::common_type<Args...>::type, |
2d1d5a91 | 28 | sizeof...(Args)> |
7ee204d2 | 29 | make_array(Args&&... args) // { dg-error "invalid use" } |
30 | { | |
ddb23e9c | 31 | typedef typename std::common_type<Args...>::type CT; |
7ee204d2 | 32 | return std::array<CT, sizeof...(Args)>{static_cast<CT> |
33 | (std::forward<Args>(args))...}; | |
34 | } | |
35 | ||
36 | void test01() | |
37 | { | |
38 | constexpr auto a1 = make_array(0); | |
39 | constexpr auto a2 = make_array(0, 1.2); | |
40 | constexpr auto a3 = make_array(5, true, 3.1415f, 'c'); | |
ddb23e9c | 41 | |
42 | int i{}; | |
43 | double d{1.2}; | |
44 | float f{3.1415f}; | |
45 | ||
46 | auto b1 = make_array(i); | |
47 | auto b2 = make_array(i, 1.2); | |
48 | auto b3 = make_array(i, d); | |
49 | auto b4 = make_array(0, d); | |
50 | auto b5 = make_array(i, true, f, 'c'); | |
7ee204d2 | 51 | |
52 | static_assert(std::is_same<decltype(a1), const std::array<int, 1>>(), ""); | |
53 | static_assert(std::is_same<decltype(a2), const std::array<double, 2>>(), ""); | |
54 | static_assert(std::is_same<decltype(a3), const std::array<float, 4>>(), ""); | |
ddb23e9c | 55 | |
56 | static_assert(std::is_same<decltype(b1), std::array<int, 1>>(), ""); | |
57 | static_assert(std::is_same<decltype(b2), std::array<double, 2>>(), ""); | |
58 | static_assert(std::is_same<decltype(b3), std::array<double, 2>>(), ""); | |
59 | static_assert(std::is_same<decltype(b4), std::array<double, 2>>(), ""); | |
60 | static_assert(std::is_same<decltype(b5), std::array<float, 4>>(), ""); | |
7ee204d2 | 61 | } |
62 | ||
63 | void test02() | |
64 | { | |
65 | make_array(); // { dg-error "no matching function" } | |
66 | } | |
67 | // { dg-prune-output "substitution" } | |
68 | // { dg-prune-output "include" } |