libstdc++-v3/testsuite/23_containers/vector/bool/allocator/swap.cc

   1 // Copyright (C) 2014-2021 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 <vector>
  21 #include <testsuite_hooks.h>
  22 #include <testsuite_allocator.h>
  23
  24 using T = bool;
  25
  26 namespace __gnu_test
  27 {
  28   // It is undefined behaviour to swap() containers with unequal allocators
  29   // if the allocator doesn't propagate, so ensure the allocators compare
  30   // equal, while still being able to test propagation via get_personality().
  31   template<typename Type>
  32     bool
  33     operator==(const propagating_allocator<Type, false>&,
  34                const propagating_allocator<Type, false>&)
  35     { return true; }
  36
  37   template<typename Type>
  38     bool
  39     operator!=(const propagating_allocator<Type, false>&,
  40                const propagating_allocator<Type, false>&)
  41     { return false; }
  42 }
  43
  44 using __gnu_test::propagating_allocator;
  45
  46 void test01()
  47 {
  48   typedef propagating_allocator<T, false> alloc_type;
  49   typedef std::vector<T, alloc_type> test_type;
  50   test_type v1(alloc_type(1));
  51   v1.push_back(T());
  52   test_type v2(alloc_type(2));
  53   v2.push_back(T());
  54   std::swap(v1, v2);
  55   VERIFY(1 == v1.get_allocator().get_personality());
  56   VERIFY(2 == v2.get_allocator().get_personality());
  57   // swap back so assertions in uneq_allocator::deallocate don't fail
  58   std::swap(v1, v2);
  59 }
  60
  61 void test02()
  62 {
  63   typedef propagating_allocator<T, true> alloc_type;
  64   typedef std::vector<T, alloc_type> test_type;
  65   test_type v1(alloc_type(1));
  66   v1.push_back(T());
  67   test_type v2(alloc_type(2));
  68   v2.push_back(T());
  69   std::swap(v1, v2);
  70   VERIFY(2 == v1.get_allocator().get_personality());
  71   VERIFY(1 == v2.get_allocator().get_personality());
  72 }
  73
  74 int main()
  75 {
  76   test01();
  77   test02();
  78   return 0;
  79 }