libstdc++-v3/testsuite/23_containers/set/modifiers/node_swap.cc

   1 // Copyright (C) 2018-2022 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++17 } }
  19
  20 #include <set>
  21 #include <testsuite_hooks.h>
  22
  23 void
  24 test01()
  25 {
  26   // PR libstdc++/82966
  27   std::set<int>::node_type n1, n2;
  28   n1.swap(n2);
  29   VERIFY( n1.empty() );
  30   VERIFY( n2.empty() );
  31 }
  32
  33 void
  34 test02()
  35 {
  36   std::set<int> s{1, 2};
  37   std::set<int>::node_type n1 = s.extract(1), n2;
  38   swap(n1, n2);
  39   VERIFY( n1.empty() );
  40   VERIFY( !n2.empty() );
  41 }
  42
  43 int main()
  44 {
  45   test01();
  46   test02();
  47 }