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// Make sure std::array is an aggregate type.
10// We can only check this in C++17 and above, because we don't have the
11// trait before that.
12// UNSUPPORTED: c++03, c++11, c++14
13
14#include <array>
15#include <type_traits>
16
17template <typename T>
18void check_aggregate() {
19 static_assert(std::is_aggregate<std::array<T, 0> >::value, "");
20 static_assert(std::is_aggregate<std::array<T, 1> >::value, "");
21 static_assert(std::is_aggregate<std::array<T, 2> >::value, "");
22 static_assert(std::is_aggregate<std::array<T, 3> >::value, "");
23 static_assert(std::is_aggregate<std::array<T, 4> >::value, "");
24}
25
26struct Empty {};
27struct Trivial {
28 int i;
29 int j;
30};
31struct NonTrivial {
32 int i;
33 int j;
34 NonTrivial(NonTrivial const&) {}
35};
36
37int main(int, char**) {
38 check_aggregate<char>();
39 check_aggregate<int>();
40 check_aggregate<long>();
41 check_aggregate<float>();
42 check_aggregate<double>();
43 check_aggregate<long double>();
44 check_aggregate<Empty>();
45 check_aggregate<Trivial>();
46 check_aggregate<NonTrivial>();
47
48 return 0;
49}
50

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