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_set>
10
11 // unordered_set(unordered_set&&)
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_set>
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 std::size_t operator()(T const&) const;
41 };
42
main(int,char **)43 int main(int, char**)
44 {
45 #if defined(_LIBCPP_VERSION)
46 {
47 typedef std::unordered_set<MoveOnly> C;
48 static_assert(std::is_nothrow_move_constructible<C>::value, "");
49 }
50 {
51 typedef std::unordered_set<MoveOnly, std::hash<MoveOnly>,
52 std::equal_to<MoveOnly>, test_allocator<MoveOnly>> C;
53 static_assert(std::is_nothrow_move_constructible<C>::value, "");
54 }
55 {
56 typedef std::unordered_set<MoveOnly, std::hash<MoveOnly>,
57 std::equal_to<MoveOnly>, other_allocator<MoveOnly>> C;
58 static_assert(std::is_nothrow_move_constructible<C>::value, "");
59 }
60 #endif // _LIBCPP_VERSION
61 {
62 typedef std::unordered_set<MoveOnly, some_hash<MoveOnly>> C;
63 static_assert(!std::is_nothrow_move_constructible<C>::value, "");
64 }
65 {
66 typedef std::unordered_set<MoveOnly, std::hash<MoveOnly>,
67 some_comp<MoveOnly>> C;
68 static_assert(!std::is_nothrow_move_constructible<C>::value, "");
69 }
70
71 return 0;
72 }
73