50 lines · cpp
1 2//===----------------------------------------------------------------------===//3//4// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.5// See https://llvm.org/LICENSE.txt for license information.6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception7//8//===----------------------------------------------------------------------===//9 10// <unordered_map>11 12// Check that std::unordered_multimap and its iterators can be instantiated with an incomplete13// type.14 15#include <unordered_map>16 17#include "min_allocator.h"18#include "test_macros.h"19 20template <class Tp>21struct MyHash {22 MyHash() {}23 std::size_t operator()(Tp const&) const { return 42; }24};25 26struct A {27 typedef std::unordered_multimap<A, A, MyHash<A> > Map;28 Map m;29 Map::iterator it;30 Map::const_iterator cit;31 Map::local_iterator lit;32 Map::const_local_iterator clit;33};34 35inline bool operator==(A const& L, A const& R) { return &L == &R; }36 37int main(int, char**) {38 A a;39 40 // Make sure that the allocator isn't rebound to an incomplete type41 std::unordered_multimap<int,42 int,43 std::hash<int>,44 std::equal_to<int>,45 complete_type_allocator<std::pair<const int, int> > >46 m;47 48 return 0;49}50