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// UNSUPPORTED: c++03, c++11, c++14, c++17
9
10// type_traits
11
12// is_unbounded_array<T>
13// T is an array type of unknown bound ([dcl.array])
14
15#include <type_traits>
16#include <cstddef>
17
18#include "test_macros.h"
19
20template <class T, bool B>
21void test_array_imp()
22{
23 static_assert( B == std::is_unbounded_array<T>::value, "" );
24 static_assert( B == std::is_unbounded_array_v<T>, "" );
25}
26
27template <class T, bool B>
28void test_array()
29{
30 test_array_imp<T, B>();
31 test_array_imp<const T, B>();
32 test_array_imp<volatile T, B>();
33 test_array_imp<const volatile T, B>();
34}
35
36class incomplete_type;
37
38class Empty {};
39union Union {};
40
41class Abstract
42{
43 virtual ~Abstract() = 0;
44};
45
46enum Enum {zero, one};
47typedef void (*FunctionPtr)();
48
49int main(int, char**)
50{
51// Non-array types
52 test_array<void, false>();
53 test_array<std::nullptr_t, false>();
54 test_array<int, false>();
55 test_array<double, false>();
56 test_array<void *, false>();
57 test_array<int &, false>();
58 test_array<int &&, false>();
59 test_array<Empty, false>();
60 test_array<Union, false>();
61 test_array<Abstract, false>();
62 test_array<Enum, false>();
63 test_array<FunctionPtr, false>();
64
65// Array types
66 test_array<char[3], false>();
67 test_array<int[0], false>();
68 test_array<char[], true>();
69 test_array<incomplete_type[], true>();
70
71 return 0;
72}
73

source code of libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/is_unbounded_array.pass.cpp