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 // <map>
11 
12 // multimap& operator=(multimap&& c)
13 //     noexcept(
14 //          allocator_type::propagate_on_container_move_assignment::value &&
15 //          is_nothrow_move_assignable<allocator_type>::value &&
16 //          is_nothrow_move_assignable<key_compare>::value);
17 
18 // This tests a conforming extension
19 
20 // UNSUPPORTED: c++98, c++03
21 
22 #include <map>
23 #include <cassert>
24 
25 #include "MoveOnly.h"
26 #include "test_allocator.h"
27 
28 template <class T>
29 struct some_comp
30 {
31     typedef T value_type;
32     some_comp& operator=(const some_comp&);
33     bool operator()(const T&, const T&) const { return false; }
34 };
35 
36 int main()
37 {
38     typedef std::pair<const MoveOnly, MoveOnly> V;
39     {
40         typedef std::multimap<MoveOnly, MoveOnly> C;
41         static_assert(std::is_nothrow_move_assignable<C>::value, "");
42     }
43     {
44         typedef std::multimap<MoveOnly, MoveOnly, std::less<MoveOnly>, test_allocator<V>> C;
45         static_assert(!std::is_nothrow_move_assignable<C>::value, "");
46     }
47     {
48         typedef std::multimap<MoveOnly, MoveOnly, std::less<MoveOnly>, other_allocator<V>> C;
49         static_assert(std::is_nothrow_move_assignable<C>::value, "");
50     }
51     {
52         typedef std::multimap<MoveOnly, MoveOnly, some_comp<MoveOnly>> C;
53         static_assert(!std::is_nothrow_move_assignable<C>::value, "");
54     }
55 }
56