libcxx/test/std/containers/unord/unord.map/iterator.operators.addressof.compile.pass.cpp

   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 // Validate the constructors of the (const)(_local)_iterator classes to be
  16 // properly guarded against ADL-hijacking operator&.
  17
  18 #include <unordered_map>
  19
  20 #include "test_macros.h"
  21 #include "operator_hijacker.h"
  22
  23 template <class ToIterator, class FromIterator>
  24 void test() {
  25   FromIterator from;
  26   ToIterator copy(from);
  27   copy = from;
  28
  29   ToIterator move(std::move(from));
  30   from = FromIterator();
  31   move = std::move(from);
  32 }
  33
  34 void test() {
  35   {
  36     using I = std::unordered_map<operator_hijacker, operator_hijacker>::iterator;
  37     using CI = std::unordered_map<operator_hijacker, operator_hijacker>::const_iterator;
  38     test<I, I>();
  39     test<CI, I>();
  40     test<CI, CI>();
  41   }
  42   {
  43     using IL = std::unordered_map<operator_hijacker, operator_hijacker>::local_iterator;
  44     using CIL = std::unordered_map<operator_hijacker, operator_hijacker>::const_local_iterator;
  45     test<IL, IL>();
  46     test<CIL, IL>();
  47     test<CIL, CIL>();
  48   }
  49 }