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
19template <class Container>
20TEST_CONSTEXPR_CXX14 void assert_contiguous(Container const& c)
21{
22 for (std::size_t i = 0; i < c.size(); ++i)
23 assert(*(c.begin() + i) == *(std::addressof(*c.begin()) + i));
24}
25
26TEST_CONSTEXPR_CXX17 bool tests()
27{
28 assert_contiguous(std::array<double, 0>());
29 assert_contiguous(std::array<double, 1>());
30 assert_contiguous(std::array<double, 2>());
31 assert_contiguous(std::array<double, 3>());
32
33 assert_contiguous(std::array<char, 0>());
34 assert_contiguous(std::array<char, 1>());
35 assert_contiguous(std::array<char, 2>());
36 assert_contiguous(std::array<char, 3>());
37
38 return true;
39}
40
41int main(int, char**)
42{
43 tests();
44#if TEST_STD_VER >= 17 // begin() & friends are constexpr in >= C++17 only
45 static_assert(tests(), "");
46#endif
47 return 0;
48}
49

source code of libcxx/test/std/containers/sequences/array/contiguous.pass.cpp