libstdc++-v3/testsuite/23_containers/unordered_set/requirements/52942.cc

   1 // { dg-do compile }
   2 // { dg-options "-std=gnu++11" }
   3
   4 // Copyright (C) 2012-2016 Free Software Foundation, Inc.
   5 //
   6 // This file is part of the GNU ISO C++ Library.  This library is free
   7 // software; you can redistribute it and/or modify it under the
   8 // terms of the GNU General Public License as published by the
   9 // Free Software Foundation; either version 3, or (at your option)
  10 // any later version.
  11
  12 // This library is distributed in the hope that it will be useful,
  13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 // GNU General Public License for more details.
  16
  17 // You should have received a copy of the GNU General Public License along
  18 // with this library; see the file COPYING3.  If not see
  19 // <http://www.gnu.org/licenses/>.
  20
  21 #include <unordered_set>
  22 #include <functional>
  23
  24 struct TFoo {};
  25
  26 struct TFoo_hash
  27 {
  28   std::size_t operator()(const TFoo &) const { return 0; }
  29 };
  30
  31 void f1(std::unordered_set<TFoo, TFoo_hash> &) {}
  32
  33 void f2()
  34 {
  35   std::unordered_set<TFoo, TFoo_hash> set1;
  36   std::bind(f1, std::ref(set1));
  37 }