libstdc++-v3/testsuite/24_iterators/reverse_iterator/requirements/base_classes.cc

   1 // { dg-do compile }
   2 // 2001-06-21  Benjamin Kosnik  <bkoz@redhat.com>
   3
   4 // Copyright (C) 2001-2020 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 // 24.4.1.2 Reverse iterators
  22
  23 #include <iterator>
  24
  25 void test01()
  26 {
  27   using namespace std;
  28
  29   // Check for required base class.
  30   long l;
  31   typedef reverse_iterator<long*> test_iterator;
  32   typedef iterator<iterator_traits<long*>::iterator_category,
  33                    iterator_traits<long*>::value_type,
  34                    iterator_traits<long*>::difference_type,
  35                    iterator_traits<long*>::pointer,
  36                    iterator_traits<long*>::reference>
  37     base_iterator;
  38   test_iterator  r_it(&l);
  39   base_iterator* base __attribute__((unused)) = &r_it;
  40 }