1//===----------------------------------------------------------------------===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is dual licensed under the MIT and the University of Illinois Open 6// Source Licenses. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9 10// <unordered_map> 11 12// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>, 13// class Alloc = allocator<pair<const Key, T>>> 14// class unordered_map 15 16// https://bugs.llvm.org/show_bug.cgi?id=16538 17// https://bugs.llvm.org/show_bug.cgi?id=16549 18 19#include <unordered_map> 20#include <cassert> 21 22struct Key { 23 template <typename T> Key(const T&) {} 24 bool operator== (const Key&) const { return true; } 25}; 26 27namespace std 28{ 29 template <> 30 struct hash<Key> 31 { 32 size_t operator()(Key const &) const {return 0;} 33 }; 34} 35 36int 37main() 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