libstdc++-v3/testsuite/23_containers/priority_queue/dr2537.cc

   1 // Copyright (C) 2019-2025 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 <queue>
  21 #include <testsuite_hooks.h>
  22
  23 struct Q : std::priority_queue<int>
  24 {
  25   using priority_queue::priority_queue;
  26
  27   bool is_heap() const
  28   { return std::is_heap(c.begin(), c.end()); }
  29 };
  30
  31 void
  32 test01()
  33 {
  34   const Q::value_compare cmp;
  35   const Q::container_type c{ 2, 3, 5, 7, 11, 13, 17, 19, 23 };
  36   const Q::container_type::allocator_type a;
  37
  38   Q q1(cmp, c, a);
  39   VERIFY( q1.is_heap() );
  40
  41   auto c2 = c;
  42   Q q2(cmp, std::move(c2), a);
  43   VERIFY( q2.is_heap() );
  44 }
  45
  46 int
  47 main()
  48 {
  49   test01();
  50 }