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_trivially_assignable
13
14 #include <type_traits>
15
16 template <class T, class U>
test_is_trivially_assignable()17 void test_is_trivially_assignable()
18 {
19 static_assert(( std::is_trivially_assignable<T, U>::value), "");
20 }
21
22 template <class T, class U>
test_is_not_trivially_assignable()23 void test_is_not_trivially_assignable()
24 {
25 static_assert((!std::is_trivially_assignable<T, U>::value), "");
26 }
27
28 struct A
29 {
30 };
31
32 struct B
33 {
34 void operator=(A);
35 };
36
37 struct C
38 {
39 void operator=(C&); // not const
40 };
41
main()42 int main()
43 {
44 test_is_trivially_assignable<int&, int&> ();
45 test_is_trivially_assignable<int&, int> ();
46 test_is_trivially_assignable<int&, double> ();
47
48 test_is_not_trivially_assignable<int, int&> ();
49 test_is_not_trivially_assignable<int, int> ();
50 test_is_not_trivially_assignable<B, A> ();
51 test_is_not_trivially_assignable<A, B> ();
52 test_is_not_trivially_assignable<C&, C&> ();
53 }
54