1 | //===----------------------------------------------------------------------===// |
2 | // |
3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
4 | // See https://llvm.org/LICENSE.txt for license information. |
5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
6 | // |
7 | //===----------------------------------------------------------------------===// |
8 | |
9 | // <array> |
10 | |
11 | // An array is a contiguous container |
12 | |
13 | #include <array> |
14 | #include <cassert> |
15 | #include <memory> |
16 | |
17 | #include "test_macros.h" |
18 | |
19 | template <class Container> |
20 | TEST_CONSTEXPR_CXX14 void assert_contiguous(Container const& c) { |
21 | for (std::size_t i = 0; i < c.size(); ++i) |
22 | assert(*(c.begin() + i) == *(std::addressof(*c.begin()) + i)); |
23 | } |
24 | |
25 | TEST_CONSTEXPR_CXX17 bool tests() { |
26 | assert_contiguous(std::array<double, 0>()); |
27 | assert_contiguous(std::array<double, 1>()); |
28 | assert_contiguous(std::array<double, 2>()); |
29 | assert_contiguous(std::array<double, 3>()); |
30 | |
31 | assert_contiguous(std::array<char, 0>()); |
32 | assert_contiguous(std::array<char, 1>()); |
33 | assert_contiguous(std::array<char, 2>()); |
34 | assert_contiguous(std::array<char, 3>()); |
35 | |
36 | return true; |
37 | } |
38 | |
39 | int main(int, char**) { |
40 | tests(); |
41 | #if TEST_STD_VER >= 17 // begin() & friends are constexpr in >= C++17 only |
42 | static_assert(tests(), "" ); |
43 | #endif |
44 | return 0; |
45 | } |
46 | |