libstdc++-v3/testsuite/20_util/unique_ptr/specialized_algorithms/swap.cc

   1 // { dg-do run { target c++11 } }
   2
   3 // Copyright (C) 2008-2024 Free Software Foundation, Inc.
   4 //
   5 // This file is part of the GNU ISO C++ Library.  This library is free
   6 // software; you can redistribute it and/or modify it under the
   7 // terms of the GNU General Public License as published by the
   8 // Free Software Foundation; either version 3, or (at your option)
   9 // any later version.
  10
  11 // This library is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15
  16 // You should have received a copy of the GNU General Public License along
  17 // with this library; see the file COPYING3.  If not see
  18 // <http://www.gnu.org/licenses/>.
  19
  20 #include <memory>
  21 #include <testsuite_hooks.h>
  22
  23 struct A {};
  24
  25 //20.6.11.5 unique_ptr specialized algorithms [unique.ptr.special]
  26
  27 void
  28 test01()
  29 {
  30   std::unique_ptr<A> p1;
  31   std::unique_ptr<A> p2(new A);
  32   std::unique_ptr<A> p3;
  33
  34   std::swap(p3, p2);
  35
  36   VERIFY( p1 != p3 );
  37   VERIFY( p2 != p3 );
  38   VERIFY( p1 == p2 );
  39 }
  40
  41 int main()
  42 {
  43   test01();
  44   return 0;
  45 }