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// UNSUPPORTED: c++03, c++11, c++14
10// TODO: Change to XFAIL once https://github.com/llvm/llvm-project/issues/40340 is fixed
11// UNSUPPORTED: availability-pmr-missing
12
13// <unordered_map>
14
15// namespace std::pmr {
16// template <class K, class V, class H = hash<K>, class P = equal_to<K> >
17// using unordered_map =
18// ::std::unordered_map<K, V, H, P, polymorphic_allocator<pair<const K, V>>>
19//
20// template <class K, class V, class H = hash<K>, class P = equal_to<K> >
21// using unordered_multimap =
22// ::std::unordered_multimap<K, V, H, P, polymorphic_allocator<pair<const K, V>>>
23//
24// } // namespace std::pmr
25
26#include <unordered_map>
27#include <memory_resource>
28#include <type_traits>
29#include <cassert>
30
31template <class T>
32struct MyHash : std::hash<T> {};
33
34template <class T>
35struct MyPred : std::equal_to<T> {};
36
37int main(int, char**) {
38 using K = int;
39 using V = char;
40 using DH = std::hash<K>;
41 using MH = MyHash<K>;
42 using DP = std::equal_to<K>;
43 using MP = MyPred<K>;
44 using P = std::pair<const K, V>;
45 {
46 using StdMap = std::unordered_map<K, V, DH, DP, std::pmr::polymorphic_allocator<P>>;
47 using PmrMap = std::pmr::unordered_map<K, V>;
48 static_assert(std::is_same<StdMap, PmrMap>::value, "");
49 }
50 {
51 using StdMap = std::unordered_map<K, V, MH, DP, std::pmr::polymorphic_allocator<P>>;
52 using PmrMap = std::pmr::unordered_map<K, V, MH>;
53 static_assert(std::is_same<StdMap, PmrMap>::value, "");
54 }
55 {
56 using StdMap = std::unordered_map<K, V, MH, MP, std::pmr::polymorphic_allocator<P>>;
57 using PmrMap = std::pmr::unordered_map<K, V, MH, MP>;
58 static_assert(std::is_same<StdMap, PmrMap>::value, "");
59 }
60 {
61 std::pmr::unordered_map<int, int> m;
62 assert(m.get_allocator().resource() == std::pmr::get_default_resource());
63 }
64 {
65 using StdMap = std::unordered_multimap<K, V, DH, DP, std::pmr::polymorphic_allocator<P>>;
66 using PmrMap = std::pmr::unordered_multimap<K, V>;
67 static_assert(std::is_same<StdMap, PmrMap>::value, "");
68 }
69 {
70 using StdMap = std::unordered_multimap<K, V, MH, DP, std::pmr::polymorphic_allocator<P>>;
71 using PmrMap = std::pmr::unordered_multimap<K, V, MH>;
72 static_assert(std::is_same<StdMap, PmrMap>::value, "");
73 }
74 {
75 using StdMap = std::unordered_multimap<K, V, MH, MP, std::pmr::polymorphic_allocator<P>>;
76 using PmrMap = std::pmr::unordered_multimap<K, V, MH, MP>;
77 static_assert(std::is_same<StdMap, PmrMap>::value, "");
78 }
79 {
80 std::pmr::unordered_multimap<int, int> m;
81 assert(m.get_allocator().resource() == std::pmr::get_default_resource());
82 }
83
84 return 0;
85}
86

source code of libcxx/test/std/utilities/utility/mem.res/mem.res.aliases/header_unordered_map_synop.pass.cpp