is_nothrow_assignable.pass.cpp revision 933afa9761c1c1f916161278a99284d50a594939 
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_nothrow_assignable
13
14#include <type_traits>
15
16template <class T, class U>
17void test_is_nothrow_assignable()
18{
19    static_assert(( std::is_nothrow_assignable<T, U>::value), "");
20}
21
22template <class T, class U>
23void test_is_not_nothrow_assignable()
24{
25    static_assert((!std::is_nothrow_assignable<T, U>::value), "");
26}
27
28struct A
29{
30};
31
32struct B
33{
34    void operator=(A);
35};
36
37int main()
38{
39    test_is_nothrow_assignable<int&, int&> ();
40    test_is_nothrow_assignable<int&, int> ();
41#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
42    test_is_nothrow_assignable<int&, double> ();
43#endif
44
45    test_is_not_nothrow_assignable<int, int&> ();
46    test_is_not_nothrow_assignable<int, int> ();
47    test_is_not_nothrow_assignable<B, A> ();
48    test_is_not_nothrow_assignable<A, B> ();
49}
50