]>
Commit | Line | Data |
---|---|---|
52066eae | 1 | // { dg-do compile { target c++11 } } |
b3618b71 | 2 | |
8d9254fc | 3 | // Copyright (C) 2012-2020 Free Software Foundation, Inc. |
b3618b71 DK |
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 <type_traits> | |
21 | #include <array> | |
22 | #include <utility> | |
23 | ||
24 | template<typename... Args> | |
25 | constexpr | |
6c5173c0 | 26 | std::array<typename std::common_type<Args...>::type, |
770e9be9 | 27 | sizeof...(Args)> |
373c726e | 28 | make_array(Args&&... args) // { dg-error "no type.*common_type<>" } |
b3618b71 | 29 | { |
6c5173c0 | 30 | typedef typename std::common_type<Args...>::type CT; |
b3618b71 DK |
31 | return std::array<CT, sizeof...(Args)>{static_cast<CT> |
32 | (std::forward<Args>(args))...}; | |
33 | } | |
34 | ||
35 | void test01() | |
36 | { | |
37 | constexpr auto a1 = make_array(0); | |
38 | constexpr auto a2 = make_array(0, 1.2); | |
39 | constexpr auto a3 = make_array(5, true, 3.1415f, 'c'); | |
6c5173c0 DK |
40 | |
41 | int i{}; | |
42 | double d{1.2}; | |
43 | float f{3.1415f}; | |
44 | ||
45 | auto b1 = make_array(i); | |
46 | auto b2 = make_array(i, 1.2); | |
47 | auto b3 = make_array(i, d); | |
48 | auto b4 = make_array(0, d); | |
49 | auto b5 = make_array(i, true, f, 'c'); | |
b3618b71 DK |
50 | |
51 | static_assert(std::is_same<decltype(a1), const std::array<int, 1>>(), ""); | |
52 | static_assert(std::is_same<decltype(a2), const std::array<double, 2>>(), ""); | |
53 | static_assert(std::is_same<decltype(a3), const std::array<float, 4>>(), ""); | |
6c5173c0 DK |
54 | |
55 | static_assert(std::is_same<decltype(b1), std::array<int, 1>>(), ""); | |
56 | static_assert(std::is_same<decltype(b2), std::array<double, 2>>(), ""); | |
57 | static_assert(std::is_same<decltype(b3), std::array<double, 2>>(), ""); | |
58 | static_assert(std::is_same<decltype(b4), std::array<double, 2>>(), ""); | |
59 | static_assert(std::is_same<decltype(b5), std::array<float, 4>>(), ""); | |
b3618b71 DK |
60 | } |
61 | ||
62 | void test02() | |
63 | { | |
64 | make_array(); // { dg-error "no matching function" } | |
65 | } | |
66 | // { dg-prune-output "substitution" } | |
67 | // { dg-prune-output "include" } |