libstdc++-v3/testsuite/23_containers/unordered_set/56267-2.cc

   1 // Copyright (C) 2014-2021 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 { target c++11 } }
  19
  20 #include <unordered_set>
  21
  22 struct audrey2hash : std::hash<int>
  23 {
  24   audrey2hash() { throw "Seed me, Seymour"; } // must not use default ctor
  25
  26   audrey2hash(int) { }
  27
  28   audrey2hash(const audrey2hash&) = default;
  29
  30   audrey2hash&
  31   operator=(const audrey2hash&) { throw "Don't assign the plants"; }
  32 };
  33
  34 void test01()
  35 {
  36   typedef std::unordered_set<int, audrey2hash> test_type;
  37   test_type::local_iterator it __attribute__((unused));
  38   test_type c{ {1, 2, 3}, 3u, audrey2hash{1} };
  39   it = c.begin(0);
  40 }
  41
  42 int main()
  43 {
  44   test01();
  45 }