libstdc++-v3/testsuite/24_iterators/operations/prev_neg.cc

   1 // Copyright (C) 2015-2020 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-options "-D_GLIBCXX_CONCEPT_CHECKS" }
  19 // { dg-do compile { target c++11 } }
  20
  21 #include <iterator>
  22
  23 struct Y {};
  24
  25 namespace std
  26 {
  27   template<>
  28     struct iterator_traits<const Y*> : iterator_traits<Y*>
  29     {
  30       using iterator_category = forward_iterator_tag;
  31       using reference = const Y&;
  32       using pointer = const Y*;
  33     };
  34 }
  35
  36 void
  37 test02()
  38 {
  39   const Y array[1] = { };
  40   std::prev(array + 1);
  41   // { dg-error "forward_iterator" "" { target *-*-* } 223 }
  42 }