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_multimap()
12// noexcept(
13// is_nothrow_default_constructible<allocator_type>::value &&
14// is_nothrow_default_constructible<key_compare>::value &&
15// is_nothrow_copy_constructible<key_compare>::value);
16
17// This tests a conforming extension
18
19// UNSUPPORTED: c++03
20
21#include <unordered_map>
22#include <cassert>
23
24#include "test_macros.h"
25#include "MoveOnly.h"
26#include "test_allocator.h"
27#include "../../../test_hash.h"
28
29template <class T>
30struct some_comp {
31 typedef T value_type;
32 some_comp();
33 some_comp(const some_comp&);
34 bool operator()(const T&, const T&) const { return false; }
35};
36
37template <class T>
38struct some_hash {
39 typedef T value_type;
40 some_hash();
41 some_hash(const some_hash&);
42 std::size_t operator()(T const&) const;
43};
44
45int main(int, char**) {
46#if defined(_LIBCPP_VERSION)
47 {
48 typedef std::unordered_multimap<MoveOnly, MoveOnly> C;
49 static_assert(std::is_nothrow_default_constructible<C>::value, "");
50 }
51 {
52 typedef std::unordered_multimap<MoveOnly,
53 MoveOnly,
54 std::hash<MoveOnly>,
55 std::equal_to<MoveOnly>,
56 test_allocator<std::pair<const MoveOnly, MoveOnly>>>
57 C;
58 static_assert(std::is_nothrow_default_constructible<C>::value, "");
59 }
60#endif // _LIBCPP_VERSION
61 {
62 typedef std::unordered_multimap<MoveOnly,
63 MoveOnly,
64 std::hash<MoveOnly>,
65 std::equal_to<MoveOnly>,
66 other_allocator<std::pair<const MoveOnly, MoveOnly>>>
67 C;
68 static_assert(!std::is_nothrow_default_constructible<C>::value, "");
69 }
70 {
71 typedef std::unordered_multimap<MoveOnly, MoveOnly, some_hash<MoveOnly>> C;
72 static_assert(!std::is_nothrow_default_constructible<C>::value, "");
73 }
74 {
75 typedef std::unordered_multimap<MoveOnly, MoveOnly, std::hash<MoveOnly>, some_comp<MoveOnly>> C;
76 static_assert(!std::is_nothrow_default_constructible<C>::value, "");
77 }
78
79 return 0;
80}
81

source code of libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/default_noexcept.pass.cpp