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 // These compilers have not implemented Core 2094 which makes volatile
14 // qualified types trivially copyable.
15 // XFAIL: clang-4, apple-clang-9.0, gcc
16
17 #include <type_traits>
18 #include <cassert>
19 #include "test_macros.h"
20
21 template <class T>
test_is_trivially_copyable()22 void test_is_trivially_copyable()
23 {
24 static_assert( std::is_trivially_copyable<T>::value, "");
25 static_assert( std::is_trivially_copyable<const T>::value, "");
26 static_assert( std::is_trivially_copyable<volatile T>::value, "");
27 static_assert( std::is_trivially_copyable<const volatile T>::value, "");
28 #if TEST_STD_VER > 14
29 static_assert( std::is_trivially_copyable_v<T>, "");
30 static_assert( std::is_trivially_copyable_v<const T>, "");
31 static_assert( std::is_trivially_copyable_v<volatile T>, "");
32 static_assert( std::is_trivially_copyable_v<const volatile T>, "");
33 #endif
34 }
35
36 template <class T>
test_is_not_trivially_copyable()37 void test_is_not_trivially_copyable()
38 {
39 static_assert(!std::is_trivially_copyable<T>::value, "");
40 static_assert(!std::is_trivially_copyable<const T>::value, "");
41 static_assert(!std::is_trivially_copyable<volatile T>::value, "");
42 static_assert(!std::is_trivially_copyable<const volatile T>::value, "");
43 #if TEST_STD_VER > 14
44 static_assert(!std::is_trivially_copyable_v<T>, "");
45 static_assert(!std::is_trivially_copyable_v<const T>, "");
46 static_assert(!std::is_trivially_copyable_v<volatile T>, "");
47 static_assert(!std::is_trivially_copyable_v<const volatile T>, "");
48 #endif
49 }
50
51 struct A
52 {
53 int i_;
54 };
55
56 struct B
57 {
58 int i_;
~BB59 ~B() {assert(i_ == 0);}
60 };
61
62 class C
63 {
64 public:
65 C();
66 };
67
main(int,char **)68 int main(int, char**)
69 {
70 test_is_trivially_copyable<int> ();
71 test_is_trivially_copyable<const int> ();
72 test_is_trivially_copyable<A> ();
73 test_is_trivially_copyable<const A> ();
74 test_is_trivially_copyable<C> ();
75
76 test_is_not_trivially_copyable<int&> ();
77 test_is_not_trivially_copyable<const A&> ();
78 test_is_not_trivially_copyable<B> ();
79
80 return 0;
81 }
82