libstdc++-v3/testsuite/23_containers/priority_queue/67085.cc

   1 // Copyright (C) 2017-2018 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 // { dg-require-normal-mode "" }
  20
  21 #include <queue>
  22 #include <testsuite_hooks.h>
  23
  24 unsigned count;
  25
  26 struct CopyCounter : std::less<int>
  27 {
  28   CopyCounter() = default;
  29   CopyCounter(const CopyCounter&) { ++count; }
  30   CopyCounter(CopyCounter&&) = default;
  31 };
  32
  33 void
  34 test01()
  35 {
  36   int i;
  37   std::priority_queue<int, std::vector<int>, CopyCounter> q{&i, &i};
  38   VERIFY(count == 2);
  39   q.push(1);
  40   VERIFY(count == 3);
  41 }
  42
  43 int
  44 main()
  45 {
  46   test01();
  47 }