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