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 // <map>
10 
11 // map(map&&)
12 //        noexcept(is_nothrow_move_constructible<allocator_type>::value &&
13 //                 is_nothrow_move_constructible<key_compare>::value);
14 
15 // This tests a conforming extension
16 
17 // UNSUPPORTED: c++03
18 
19 #include <map>
20 #include <cassert>
21 
22 #include "test_macros.h"
23 #include "MoveOnly.h"
24 #include "test_allocator.h"
25 
26 template <class T>
27 struct some_comp
28 {
29     typedef T value_type;
30     some_comp(const some_comp&);
31     bool operator()(const T&, const T&) const { return false; }
32 };
33 
34 int main(int, char**)
35 {
36 #if defined(_LIBCPP_VERSION)
37     typedef std::pair<const MoveOnly, MoveOnly> V;
38     {
39         typedef std::map<MoveOnly, MoveOnly> C;
40         static_assert(std::is_nothrow_move_constructible<C>::value, "");
41     }
42     {
43         typedef std::map<MoveOnly, MoveOnly, std::less<MoveOnly>, test_allocator<V>> C;
44         static_assert(std::is_nothrow_move_constructible<C>::value, "");
45     }
46     {
47         typedef std::map<MoveOnly, MoveOnly, std::less<MoveOnly>, other_allocator<V>> C;
48         static_assert(std::is_nothrow_move_constructible<C>::value, "");
49     }
50 #endif // _LIBCPP_VERSION
51     {
52         typedef std::map<MoveOnly, MoveOnly, some_comp<MoveOnly>> C;
53         static_assert(!std::is_nothrow_move_constructible<C>::value, "");
54     }
55 
56   return 0;
57 }
58