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_copyable
12
13#include <type_traits>
14#include <cassert>
15#include "test_macros.h"
16
17template <class T>
18void test_is_trivially_copyable()
19{
20 static_assert( std::is_trivially_copyable<T>::value, "");
21 static_assert( std::is_trivially_copyable<const T>::value, "");
22 static_assert( std::is_trivially_copyable<volatile T>::value, "");
23 static_assert( std::is_trivially_copyable<const volatile T>::value, "");
24#if TEST_STD_VER > 14
25 static_assert( std::is_trivially_copyable_v<T>, "");
26 static_assert( std::is_trivially_copyable_v<const T>, "");
27 static_assert( std::is_trivially_copyable_v<volatile T>, "");
28 static_assert( std::is_trivially_copyable_v<const volatile T>, "");
29#endif
30}
31
32template <class T>
33void test_is_not_trivially_copyable()
34{
35 static_assert(!std::is_trivially_copyable<T>::value, "");
36 static_assert(!std::is_trivially_copyable<const T>::value, "");
37 static_assert(!std::is_trivially_copyable<volatile T>::value, "");
38 static_assert(!std::is_trivially_copyable<const volatile T>::value, "");
39#if TEST_STD_VER > 14
40 static_assert(!std::is_trivially_copyable_v<T>, "");
41 static_assert(!std::is_trivially_copyable_v<const T>, "");
42 static_assert(!std::is_trivially_copyable_v<volatile T>, "");
43 static_assert(!std::is_trivially_copyable_v<const volatile T>, "");
44#endif
45}
46
47struct A
48{
49 int i_;
50};
51
52struct B
53{
54 int i_;
55 ~B() {assert(i_ == 0);}
56};
57
58class C
59{
60public:
61 C();
62};
63
64int main(int, char**)
65{
66 test_is_trivially_copyable<int> ();
67 test_is_trivially_copyable<const int> ();
68 test_is_trivially_copyable<A> ();
69 test_is_trivially_copyable<const A> ();
70 test_is_trivially_copyable<C> ();
71
72 test_is_not_trivially_copyable<int&> ();
73 test_is_not_trivially_copyable<const A&> ();
74 test_is_not_trivially_copyable<B> ();
75
76 return 0;
77}
78

source code of libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_trivially_copyable.pass.cpp