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

   1 // Copyright (C) 2016-2025 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 // PR libstdc++/70101
  24
  25 struct comp
  26 {
  27   int init_check[64];
  28   bool operator()(int l, int r) const { return l < r; }
  29 };
  30
  31 struct check_init : std::priority_queue<int, std::vector<int>, comp>
  32 {
  33   template<typename... Args>
  34     check_init(Args... args) : priority_queue(args...)
  35     {
  36       push(0);
  37
  38       for (int i : comp.init_check)
  39         VERIFY( i == 0 );  // Will not fail if *this was value-initialized.
  40     }
  41 };
  42
  43 void
  44 test01()
  45 {
  46   std::vector<int> vec;
  47   comp cmp{};
  48   std::allocator<int> alloc;
  49   std::priority_queue<int, std::vector<int>, comp> pq;
  50   check_init c1( pq, alloc );
  51   check_init c2( std::move(pq), alloc );
  52   check_init c3( alloc );
  53   check_init c4( cmp, alloc );
  54   check_init c5( cmp, vec, alloc );
  55   check_init c6( cmp, std::move(vec), alloc );
  56 }
  57
  58 int
  59 main()
  60 {
  61   test01();
  62 }