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

   1 // Copyright (C) 2014-2019 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   bool
  32   operator==(const propagating_allocator<T, false>&,
  33              const propagating_allocator<T, false>&)
  34   {
  35     return true;
  36   }
  37
  38   bool
  39   operator!=(const propagating_allocator<T, false>&,
  40              const propagating_allocator<T, false>&)
  41   {
  42     return false;
  43   }
  44 }
  45
  46 using __gnu_test::propagating_allocator;
  47
  48 void test01()
  49 {
  50   typedef propagating_allocator<T, false> alloc_type;
  51   typedef std::vector<T, alloc_type> test_type;
  52   test_type v1(alloc_type(1));
  53   v1.push_back(T());
  54   test_type v2(alloc_type(2));
  55   v2.push_back(T());
  56   std::swap(v1, v2);
  57   VERIFY(1 == v1.get_allocator().get_personality());
  58   VERIFY(2 == v2.get_allocator().get_personality());
  59   // swap back so assertions in uneq_allocator::deallocate don't fail
  60   std::swap(v1, v2);
  61 }
  62
  63 void test02()
  64 {
  65   typedef propagating_allocator<T, true> alloc_type;
  66   typedef std::vector<T, alloc_type> test_type;
  67   test_type v1(alloc_type(1));
  68   v1.push_back(T());
  69   test_type v2(alloc_type(2));
  70   v2.push_back(T());
  71   std::swap(v1, v2);
  72   VERIFY(2 == v1.get_allocator().get_personality());
  73   VERIFY(1 == v2.get_allocator().get_personality());
  74 }
  75
  76 int main()
  77 {
  78   test01();
  79   test02();
  80   return 0;
  81 }