1 // { dg-do compile }
2 // Copyright (C) 2017 Free Software Foundation, Inc.
3 //
4 // This file is part of the GNU ISO C++ Library.  This library is free
5 // software; you can redistribute it and/or modify it under the
6 // terms of the GNU General Public License as published by the
7 // Free Software Foundation; either version 3, or (at your option)
8 // any later version.
9 
10 // This library is distributed in the hope that it will be useful,
11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13 // GNU General Public License for more details.
14 
15 // You should have received a copy of the GNU General Public License along
16 // with this library; see the file COPYING3.  If not see
17 // <http://www.gnu.org/licenses/>.
18 
19 #include <list>
20 
21 namespace X {
22   struct Y { };
operator <(Y,Y)23   bool operator<(Y, Y) { return false; }
24   template<typename T>
distance(T,T)25     void distance(T, T) { }
26 }
27 
main()28 int main()
29 {
30   std::list<X::Y> l;
31   l.sort();
32 }
33