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_standard_layout
12
13 #include <type_traits>
14 #include "test_macros.h"
15
16 template <class T>
test_is_standard_layout()17 void test_is_standard_layout()
18 {
19 static_assert( std::is_standard_layout<T>::value, "");
20 static_assert( std::is_standard_layout<const T>::value, "");
21 static_assert( std::is_standard_layout<volatile T>::value, "");
22 static_assert( std::is_standard_layout<const volatile T>::value, "");
23 #if TEST_STD_VER > 14
24 static_assert( std::is_standard_layout_v<T>, "");
25 static_assert( std::is_standard_layout_v<const T>, "");
26 static_assert( std::is_standard_layout_v<volatile T>, "");
27 static_assert( std::is_standard_layout_v<const volatile T>, "");
28 #endif
29 }
30
31 template <class T>
test_is_not_standard_layout()32 void test_is_not_standard_layout()
33 {
34 static_assert(!std::is_standard_layout<T>::value, "");
35 static_assert(!std::is_standard_layout<const T>::value, "");
36 static_assert(!std::is_standard_layout<volatile T>::value, "");
37 static_assert(!std::is_standard_layout<const volatile T>::value, "");
38 #if TEST_STD_VER > 14
39 static_assert(!std::is_standard_layout_v<T>, "");
40 static_assert(!std::is_standard_layout_v<const T>, "");
41 static_assert(!std::is_standard_layout_v<volatile T>, "");
42 static_assert(!std::is_standard_layout_v<const volatile T>, "");
43 #endif
44 }
45
46 template <class T1, class T2>
47 struct pair
48 {
49 T1 first;
50 T2 second;
51 };
52
main(int,char **)53 int main(int, char**)
54 {
55 test_is_standard_layout<int> ();
56 test_is_standard_layout<int[3]> ();
57 test_is_standard_layout<pair<int, double> > ();
58
59 test_is_not_standard_layout<int&> ();
60
61 return 0;
62 }
63