// { dg-do compile }// Copyright (C) 2007, 2009 Free Software Foundation, Inc.//// This file is part of the GNU ISO C++ Library. This library is free// software; you can redistribute it and/or modify it under the// terms of the GNU General Public License as published by the// Free Software Foundation; either version 3, or (at your option)// any later version.// This library is distributed in the hope that it will be useful,// but WITHOUT ANY WARRANTY; without even the implied warranty of// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the// GNU General Public License for more details.// You should have received a copy of the GNU General Public License along// with this library; see the file COPYING3. If not see// <http://www.gnu.org/licenses/>.#include <list>// libstdc++/33807template <class T>bool operator != (const T& x, const T& y) { return !(x == y); }struct foo { };void fnx(){std::list<foo> l1, l2;l1 = l2;}