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_base_of
13
14 #include <type_traits>
15
16 template <class T, class U>
test_is_base_of()17 void test_is_base_of()
18 {
19 static_assert((std::is_base_of<T, U>::value), "");
20 static_assert((std::is_base_of<const T, U>::value), "");
21 static_assert((std::is_base_of<T, const U>::value), "");
22 static_assert((std::is_base_of<const T, const U>::value), "");
23 }
24
25 template <class T, class U>
test_is_not_base_of()26 void test_is_not_base_of()
27 {
28 static_assert((!std::is_base_of<T, U>::value), "");
29 }
30
31 struct B {};
32 struct B1 : B {};
33 struct B2 : B {};
34 struct D : private B1, private B2 {};
35
main()36 int main()
37 {
38 test_is_base_of<B, D>();
39 test_is_base_of<B1, D>();
40 test_is_base_of<B2, D>();
41 test_is_base_of<B, B1>();
42 test_is_base_of<B, B2>();
43 test_is_base_of<B, B>();
44
45 test_is_not_base_of<D, B>();
46 test_is_not_base_of<B&, D&>();
47 test_is_not_base_of<B[3], D[3]>();
48 test_is_not_base_of<int, int>();
49 }
50