1 //===----------------------------------------------------------------------===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9
10 // type_traits
11
12 // is_standard_layout
13
14 #include <type_traits>
15 #include "test_macros.h"
16
17 template <class T>
test_is_standard_layout()18 void test_is_standard_layout()
19 {
20 static_assert( std::is_standard_layout<T>::value, "");
21 static_assert( std::is_standard_layout<const T>::value, "");
22 static_assert( std::is_standard_layout<volatile T>::value, "");
23 static_assert( std::is_standard_layout<const volatile T>::value, "");
24 #if TEST_STD_VER > 14
25 static_assert( std::is_standard_layout_v<T>, "");
26 static_assert( std::is_standard_layout_v<const T>, "");
27 static_assert( std::is_standard_layout_v<volatile T>, "");
28 static_assert( std::is_standard_layout_v<const volatile T>, "");
29 #endif
30 }
31
32 template <class T>
test_is_not_standard_layout()33 void test_is_not_standard_layout()
34 {
35 static_assert(!std::is_standard_layout<T>::value, "");
36 static_assert(!std::is_standard_layout<const T>::value, "");
37 static_assert(!std::is_standard_layout<volatile T>::value, "");
38 static_assert(!std::is_standard_layout<const volatile T>::value, "");
39 #if TEST_STD_VER > 14
40 static_assert(!std::is_standard_layout_v<T>, "");
41 static_assert(!std::is_standard_layout_v<const T>, "");
42 static_assert(!std::is_standard_layout_v<volatile T>, "");
43 static_assert(!std::is_standard_layout_v<const volatile T>, "");
44 #endif
45 }
46
47 template <class T1, class T2>
48 struct pair
49 {
50 T1 first;
51 T2 second;
52 };
53
main()54 int main()
55 {
56 test_is_standard_layout<int> ();
57 test_is_standard_layout<int[3]> ();
58 test_is_standard_layout<pair<int, double> > ();
59
60 test_is_not_standard_layout<int&> ();
61 }
62