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 // <unordered_map>
10
11 // unordered_map(unordered_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 <unordered_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&);
operator ()some_comp31 bool operator()(const T&, const T&) const { return false; }
32 };
33
34 template <class T>
35 struct some_hash
36 {
37 typedef T value_type;
38 some_hash();
39 some_hash(const some_hash&);
40
41 std::size_t operator()(T const&) const;
42 };
43
main(int,char **)44 int main(int, char**)
45 {
46 #if defined(_LIBCPP_VERSION)
47 {
48 typedef std::unordered_map<MoveOnly, MoveOnly> C;
49 static_assert(std::is_nothrow_move_constructible<C>::value, "");
50 }
51 {
52 typedef std::unordered_map<MoveOnly, MoveOnly, std::hash<MoveOnly>,
53 std::equal_to<MoveOnly>, test_allocator<std::pair<const MoveOnly, MoveOnly>>> C;
54 static_assert(std::is_nothrow_move_constructible<C>::value, "");
55 }
56 {
57 typedef std::unordered_map<MoveOnly, MoveOnly, std::hash<MoveOnly>,
58 std::equal_to<MoveOnly>, other_allocator<std::pair<const MoveOnly, MoveOnly>>> C;
59 static_assert(std::is_nothrow_move_constructible<C>::value, "");
60 }
61 #endif // _LIBCPP_VERSION
62 {
63 typedef std::unordered_map<MoveOnly, MoveOnly, some_hash<MoveOnly>> C;
64 static_assert(!std::is_nothrow_move_constructible<C>::value, "");
65 }
66 {
67 typedef std::unordered_map<MoveOnly, MoveOnly, std::hash<MoveOnly>,
68 some_comp<MoveOnly>> C;
69 static_assert(!std::is_nothrow_move_constructible<C>::value, "");
70 }
71
72 return 0;
73 }
74