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 // union
12
13 #include <type_traits>
14
15 #include "test_macros.h"
16
17 template <class T>
test_union_imp()18 void test_union_imp()
19 {
20 static_assert(!std::is_reference<T>::value, "");
21 static_assert(!std::is_arithmetic<T>::value, "");
22 static_assert(!std::is_fundamental<T>::value, "");
23 static_assert( std::is_object<T>::value, "");
24 static_assert(!std::is_scalar<T>::value, "");
25 static_assert( std::is_compound<T>::value, "");
26 static_assert(!std::is_member_pointer<T>::value, "");
27 }
28
29 template <class T>
test_union()30 void test_union()
31 {
32 test_union_imp<T>();
33 test_union_imp<const T>();
34 test_union_imp<volatile T>();
35 test_union_imp<const volatile T>();
36 }
37
38 union Union
39 {
40 int _;
41 double __;
42 };
43
main(int,char **)44 int main(int, char**)
45 {
46 test_union<Union>();
47
48 return 0;
49 }
50