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 // template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
12 // class Alloc = allocator<pair<const Key, T>>>
13 // class unordered_map
14
15 // https://bugs.llvm.org/show_bug.cgi?id=16538
16 // https://bugs.llvm.org/show_bug.cgi?id=16549
17
18 #include <unordered_map>
19 #include <cassert>
20
21 #include "test_macros.h"
22
23 struct Key {
KeyKey24 template <typename T> Key(const T&) {}
operator ==Key25 bool operator== (const Key&) const { return true; }
26 };
27
28 namespace std
29 {
30 template <>
31 struct hash<Key>
32 {
operator ()std::hash33 size_t operator()(Key const &) const {return 0;}
34 };
35 }
36
main(int,char **)37 int main(int, char**)
38 {
39 typedef std::unordered_map<Key, int> MapT;
40 typedef MapT::iterator Iter;
41 MapT map;
42 Iter it = map.find(Key(0));
43 assert(it == map.end());
44 std::pair<Iter, bool> result = map.insert(std::make_pair(Key(0), 42));
45 assert(result.second);
46 assert(result.first->second == 42);
47
48 return 0;
49 }
50