libstdc++-v3/testsuite/25_algorithms/copy_backward/debug/3_neg.cc

   1 // Copyright (C) 2018-2021 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 { xfail *-*-* } }
  19 // { dg-require-debug-mode "" }
  20
  21 #include <algorithm>
  22 #include <list>
  23
  24 void
  25 test01()
  26 {
  27   std::list<int> l1, l2;
  28   l1.push_back(1);
  29   l1.push_back(2);
  30   l1.push_back(3);
  31
  32   l2.push_back(1);
  33   std::copy_backward(++l1.begin(), l1.end(), l2.end());
  34 }
  35
  36 int
  37 main()
  38 {
  39   test01();
  40   return 0;
  41 }