//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++03, c++11, c++14
// TODO: Change to XFAIL once https://github.com/llvm/llvm-project/issues/40340 is fixed
// UNSUPPORTED: availability-pmr-missing
// <unordered_map>
// namespace std::pmr {
// template <class K, class V, class H = hash<K>, class P = equal_to<K> >
// using unordered_map =
// ::std::unordered_map<K, V, H, P, polymorphic_allocator<pair<const K, V>>>
//
// template <class K, class V, class H = hash<K>, class P = equal_to<K> >
// using unordered_multimap =
// ::std::unordered_multimap<K, V, H, P, polymorphic_allocator<pair<const K, V>>>
//
// } // namespace std::pmr
#include <unordered_map>
#include <memory_resource>
#include <type_traits>
#include <cassert>
template <class T>
struct MyHash : std::hash<T> {};
template <class T>
struct MyPred : std::equal_to<T> {};
int main(int, char**) {
using K = int;
using V = char;
using DH = std::hash<K>;
using MH = MyHash<K>;
using DP = std::equal_to<K>;
using MP = MyPred<K>;
using P = std::pair<const K, V>;
{
using StdMap = std::unordered_map<K, V, DH, DP, std::pmr::polymorphic_allocator<P>>;
using PmrMap = std::pmr::unordered_map<K, V>;
static_assert(std::is_same<StdMap, PmrMap>::value, "");
}
{
using StdMap = std::unordered_map<K, V, MH, DP, std::pmr::polymorphic_allocator<P>>;
using PmrMap = std::pmr::unordered_map<K, V, MH>;
static_assert(std::is_same<StdMap, PmrMap>::value, "");
}
{
using StdMap = std::unordered_map<K, V, MH, MP, std::pmr::polymorphic_allocator<P>>;
using PmrMap = std::pmr::unordered_map<K, V, MH, MP>;
static_assert(std::is_same<StdMap, PmrMap>::value, "");
}
{
std::pmr::unordered_map<int, int> m;
assert(m.get_allocator().resource() == std::pmr::get_default_resource());
}
{
using StdMap = std::unordered_multimap<K, V, DH, DP, std::pmr::polymorphic_allocator<P>>;
using PmrMap = std::pmr::unordered_multimap<K, V>;
static_assert(std::is_same<StdMap, PmrMap>::value, "");
}
{
using StdMap = std::unordered_multimap<K, V, MH, DP, std::pmr::polymorphic_allocator<P>>;
using PmrMap = std::pmr::unordered_multimap<K, V, MH>;
static_assert(std::is_same<StdMap, PmrMap>::value, "");
}
{
using StdMap = std::unordered_multimap<K, V, MH, MP, std::pmr::polymorphic_allocator<P>>;
using PmrMap = std::pmr::unordered_multimap<K, V, MH, MP>;
static_assert(std::is_same<StdMap, PmrMap>::value, "");
}
{
std::pmr::unordered_multimap<int, int> m;
assert(m.get_allocator().resource() == std::pmr::get_default_resource());
}
return 0;
}