1 // { dg-do compile { target c++11 } }
2 
3 // Copyright (C) 2011-2018 Free Software Foundation, Inc.
4 //
5 // This file is part of the GNU ISO C++ Library.  This library is free
6 // software; you can redistribute it and/or modify it under the
7 // terms of the GNU General Public License as published by the
8 // Free Software Foundation; either version 3, or (at your option)
9 // any later version.
10 
11 // This library is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14 // GNU General Public License for more details.
15 
16 // You should have received a copy of the GNU General Public License along
17 // with this library; see the file COPYING3.  If not see
18 // <http://www.gnu.org/licenses/>.
19 
20 #include <string>
21 #include <unordered_map>
22 
23 namespace
24 {
25   template<typename _Tp>
26   struct final_hash final
27   {
operator ()__anon08d554280111::final_hash28     std::size_t operator() (const _Tp&) const noexcept
29     { return 0; }
30   };
31 }
32 
33 // A non-integral type:
34 template class std::unordered_map<std::string, int, final_hash<std::string>>;
35 
36 // An integral type;
37 template class std::unordered_map<int, int, final_hash<int>>;
38 
39