libstdc++-v3/testsuite/23_containers/unordered_map/cons/81891.cc

   1 // Copyright (C) 2017-2025 Free Software Foundation, Inc.
   2 //
   3 // This file is part of the GNU ISO C++ Library.  This library is free
   4 // software; you can redistribute it and/or modify it under the
   5 // terms of the GNU General Public License as published by the
   6 // Free Software Foundation; either version 3, or (at your option)
   7 // any later version.
   8
   9 // This library is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13
  14 // You should have received a copy of the GNU General Public License along
  15 // with this library; see the file COPYING3.  If not see
  16 // <http://www.gnu.org/licenses/>.
  17
  18 // { dg-do run { target c++11 } }
  19
  20 #include <unordered_map>
  21 #include <testsuite_hooks.h>
  22 #include <testsuite_allocator.h>
  23
  24 struct fails_on_copy {
  25   fails_on_copy() = default;
  26   fails_on_copy(const fails_on_copy&) { throw 0; };
  27 };
  28
  29 using value_type = std::pair<const int, fails_on_copy>;
  30
  31 void
  32 test01()
  33 {
  34   value_type p;
  35   try
  36   {
  37     std::unordered_map<int, fails_on_copy> umap(&p, &p + 1);
  38   }
  39   catch(...)
  40   { }
  41 }
  42
  43 void
  44 test02()
  45 {
  46   using Alloc = __gnu_test::tracker_allocator<value_type>;
  47   using std::hash;
  48   using std::equal_to;
  49
  50   value_type p;
  51   try
  52   {
  53     std::unordered_map<int, fails_on_copy, hash<int>, equal_to<int>, Alloc>
  54         umap(&p, &p + 1);
  55   }
  56   catch(...)
  57   { }
  58
  59   using counter = __gnu_test::tracker_allocator_counter;
  60   VERIFY(counter::get_allocation_count() == counter::get_deallocation_count());
  61 }
  62
  63 int
  64 main()
  65 {
  66   test01();
  67   test02();
  68 }