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

   1 // Copyright (C) 2018 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-options "-std=gnu++17" }
  19 // { dg-do run { target c++17 } }
  20
  21 #include <set>
  22 #include <testsuite_hooks.h>
  23
  24 void
  25 test01()
  26 {
  27   // PR libstdc++/82966
  28   std::set<int>::node_type n1, n2;
  29   n1.swap(n2);
  30   VERIFY( n1.empty() );
  31   VERIFY( n2.empty() );
  32 }
  33
  34 void
  35 test02()
  36 {
  37   std::set<int> s{1, 2};
  38   std::set<int>::node_type n1 = s.extract(1), n2;
  39   swap(n1, n2);
  40   VERIFY( n1.empty() );
  41   VERIFY( !n2.empty() );
  42 }
  43
  44 int main()
  45 {
  46   test01();
  47   test02();
  48 }