libstdc++-v3/testsuite/23_containers/multiset/allocator/move_assign.cc

   1 // Copyright (C) 2013-2020 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 <set>
  21 #include <testsuite_hooks.h>
  22 #include <testsuite_allocator.h>
  23
  24 struct T { int i; };
  25
  26 bool operator<(T l, T r) { return l.i < r.i; }
  27
  28 using Cmp = std::less<T>;
  29
  30 using __gnu_test::propagating_allocator;
  31
  32 void test01()
  33 {
  34   typedef propagating_allocator<T, false> alloc_type;
  35   typedef std::multiset<T, Cmp, alloc_type> test_type;
  36   test_type v1(alloc_type(1));
  37   v1 = { test_type::value_type{} };
  38   test_type v2(alloc_type(2));
  39   v2 = { test_type::value_type{} };
  40   v2 = std::move(v1);
  41   VERIFY(1 == v1.get_allocator().get_personality());
  42   VERIFY(2 == v2.get_allocator().get_personality());
  43 }
  44
  45 void test02()
  46 {
  47   typedef propagating_allocator<T, true> alloc_type;
  48   typedef std::multiset<T, Cmp, alloc_type> test_type;
  49   test_type v1(alloc_type(1));
  50   v1 = { test_type::value_type{} };
  51   auto it = v1.begin();
  52   test_type v2(alloc_type(2));
  53   v2 = { test_type::value_type{} };
  54   v2 = std::move(v1);
  55   VERIFY(1 == v1.get_allocator().get_personality());
  56   VERIFY(1 == v2.get_allocator().get_personality());
  57   VERIFY( it == v2.begin() );
  58 }
  59
  60 void test03()
  61 {
  62   using namespace __gnu_test;
  63
  64   typedef propagating_allocator<int, false, tracker_allocator<int>> alloc_type;
  65   typedef std::multiset<int, std::less<int>, alloc_type> test_type;
  66
  67   tracker_allocator_counter::reset();
  68
  69   test_type v1(alloc_type(1));
  70   v1 = { 0, 0 };
  71
  72   test_type v2(alloc_type(2));
  73   v2 = { 2, 2 };
  74
  75   auto allocs = tracker_allocator_counter::get_allocation_count();
  76   auto constructs = tracker_allocator_counter::get_construct_count();
  77
  78   // Check no allocation on move assignment with non propagating allocators.
  79   v1 = std::move(v2);
  80
  81   VERIFY( 1 == v1.get_allocator().get_personality() );
  82   VERIFY( 2 == v2.get_allocator().get_personality() );
  83
  84   VERIFY( tracker_allocator_counter::get_allocation_count() == allocs );
  85   VERIFY( tracker_allocator_counter::get_construct_count() == constructs + 2 );
  86 }
  87
  88 int main()
  89 {
  90   test01();
  91   test02();
  92   test03();
  93   return 0;
  94 }