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 
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 }
24 
25 template <class T>
test_is_not_standard_layout()26 void test_is_not_standard_layout()
27 {
28     static_assert(!std::is_standard_layout<T>::value, "");
29     static_assert(!std::is_standard_layout<const T>::value, "");
30     static_assert(!std::is_standard_layout<volatile T>::value, "");
31     static_assert(!std::is_standard_layout<const volatile T>::value, "");
32 }
33 
34 template <class T1, class T2>
35 struct pair
36 {
37     T1 first;
38     T2 second;
39 };
40 
main()41 int main()
42 {
43     test_is_standard_layout<int> ();
44     test_is_standard_layout<int[3]> ();
45     test_is_standard_layout<pair<int, double> > ();
46 
47     test_is_not_standard_layout<int&> ();
48 }
49