union.pass.cpp revision b64f8b07c104c6cc986570ac8ee0ed16a9f23976 
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// union
13
14#include <type_traits>
15
16template <class T>
17void test_union_imp()
18{
19    static_assert(!std::is_reference<T>::value, "");
20    static_assert(!std::is_arithmetic<T>::value, "");
21    static_assert(!std::is_fundamental<T>::value, "");
22    static_assert( std::is_object<T>::value, "");
23    static_assert(!std::is_scalar<T>::value, "");
24    static_assert( std::is_compound<T>::value, "");
25    static_assert(!std::is_member_pointer<T>::value, "");
26}
27
28template <class T>
29void test_union()
30{
31    test_union_imp<T>();
32    test_union_imp<const T>();
33    test_union_imp<volatile T>();
34    test_union_imp<const volatile T>();
35}
36
37union Union
38{
39    int _;
40    double __;
41};
42
43int main()
44{
45    test_union<Union>();
46}
47