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
26template <class T>
27struct some_comp {
28 typedef T value_type;
29 some_comp(const some_comp&);
30 bool operator()(const T&, const T&) const { return false; }
31};
32
33template <class T>
34struct some_hash {
35 typedef T value_type;
36 some_hash();
37 some_hash(const some_hash&);
38 std::size_t operator()(T const&) const;
39};
40
41int main(int, char**) {
42#if defined(_LIBCPP_VERSION)
43 {
44 typedef std::unordered_set<MoveOnly> C;
45 static_assert(std::is_nothrow_move_constructible<C>::value, "");
46 }
47 {
48 typedef std::unordered_set<MoveOnly, std::hash<MoveOnly>, std::equal_to<MoveOnly>, test_allocator<MoveOnly>> C;
49 static_assert(std::is_nothrow_move_constructible<C>::value, "");
50 }
51 {
52 typedef std::unordered_set<MoveOnly, std::hash<MoveOnly>, std::equal_to<MoveOnly>, other_allocator<MoveOnly>> C;
53 static_assert(std::is_nothrow_move_constructible<C>::value, "");
54 }
55#endif // _LIBCPP_VERSION
56 {
57 typedef std::unordered_set<MoveOnly, some_hash<MoveOnly>> C;
58 static_assert(!std::is_nothrow_move_constructible<C>::value, "");
59 }
60 {
61 typedef std::unordered_set<MoveOnly, std::hash<MoveOnly>, some_comp<MoveOnly>> C;
62 static_assert(!std::is_nothrow_move_constructible<C>::value, "");
63 }
64
65 return 0;
66}
67

source code of libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/move_noexcept.pass.cpp