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 // type_traits
10
11 // is_trivially_default_constructible
12
13 #include <type_traits>
14 #include "test_macros.h"
15
16 template <class T>
test_is_trivially_default_constructible()17 void test_is_trivially_default_constructible()
18 {
19 static_assert( std::is_trivially_default_constructible<T>::value, "");
20 static_assert( std::is_trivially_default_constructible<const T>::value, "");
21 static_assert( std::is_trivially_default_constructible<volatile T>::value, "");
22 static_assert( std::is_trivially_default_constructible<const volatile T>::value, "");
23 #if TEST_STD_VER > 14
24 static_assert( std::is_trivially_default_constructible_v<T>, "");
25 static_assert( std::is_trivially_default_constructible_v<const T>, "");
26 static_assert( std::is_trivially_default_constructible_v<volatile T>, "");
27 static_assert( std::is_trivially_default_constructible_v<const volatile T>, "");
28 #endif
29 }
30
31 template <class T>
test_has_not_trivial_default_constructor()32 void test_has_not_trivial_default_constructor()
33 {
34 static_assert(!std::is_trivially_default_constructible<T>::value, "");
35 static_assert(!std::is_trivially_default_constructible<const T>::value, "");
36 static_assert(!std::is_trivially_default_constructible<volatile T>::value, "");
37 static_assert(!std::is_trivially_default_constructible<const volatile T>::value, "");
38 #if TEST_STD_VER > 14
39 static_assert(!std::is_trivially_default_constructible_v<T>, "");
40 static_assert(!std::is_trivially_default_constructible_v<const T>, "");
41 static_assert(!std::is_trivially_default_constructible_v<volatile T>, "");
42 static_assert(!std::is_trivially_default_constructible_v<const volatile T>, "");
43 #endif
44 }
45
46 class Empty
47 {
48 };
49
50 class NotEmpty
51 {
52 virtual ~NotEmpty();
53 };
54
55 union Union {};
56
57 struct bit_zero
58 {
59 int : 0;
60 };
61
62 class Abstract
63 {
64 virtual ~Abstract() = 0;
65 };
66
67 struct A
68 {
69 A();
70 };
71
main(int,char **)72 int main(int, char**)
73 {
74 test_has_not_trivial_default_constructor<void>();
75 test_has_not_trivial_default_constructor<int&>();
76 test_has_not_trivial_default_constructor<A>();
77 test_has_not_trivial_default_constructor<Abstract>();
78 test_has_not_trivial_default_constructor<NotEmpty>();
79
80 test_is_trivially_default_constructible<Union>();
81 test_is_trivially_default_constructible<Empty>();
82 test_is_trivially_default_constructible<int>();
83 test_is_trivially_default_constructible<double>();
84 test_is_trivially_default_constructible<int*>();
85 test_is_trivially_default_constructible<const int*>();
86 test_is_trivially_default_constructible<char[3]>();
87 test_is_trivially_default_constructible<bit_zero>();
88
89 return 0;
90 }
91