libstdc++-v3/testsuite/24_iterators/range_access_cpp14.cc

   1 // { dg-do run }
   2 // { dg-options "-std=gnu++14" }
   3
   4 // Copyright (C) 2015 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 // 24.6.5, range access [iterator.range]
  22
  23 #include <iterator>
  24 #include <vector>
  25 #include <testsuite_hooks.h>
  26
  27 bool test __attribute__((unused)) = true;
  28
  29 void
  30 test01()
  31 {
  32   int i[1];
  33   VERIFY(std::cbegin(i) == i);
  34   VERIFY(std::cend(i) == i+1);
  35   VERIFY(std::rbegin(i) == std::reverse_iterator<int*>(i+1));
  36   VERIFY(std::rend(i) == std::reverse_iterator<int*>(i));
  37   VERIFY(std::crbegin(i) == std::reverse_iterator<int*>(i+1));
  38   VERIFY(std::crend(i) == std::reverse_iterator<int*>(i));
  39 }
  40
  41 void
  42 test02()
  43 {
  44   static int i[1];
  45   constexpr auto b  __attribute__((unused)) = std::begin(i);
  46   constexpr auto e  __attribute__((unused)) = std::end(i);
  47   constexpr auto cb __attribute__((unused)) = std::cbegin(i);
  48   constexpr auto ce __attribute__((unused)) = std::cend(i);
  49 }
  50
  51 int
  52 test03()
  53 {
  54   std::initializer_list<int> il{1};
  55   VERIFY(std::cbegin(il) == il.begin());
  56   VERIFY(std::cend(il) == il.end());
  57   VERIFY(std::rbegin(il) == std::reverse_iterator<const int*>(il.end()));
  58   VERIFY(std::rend(il) == std::reverse_iterator<const int*>(il.begin()));
  59   VERIFY(std::crbegin(il) == std::reverse_iterator<const int*>(il.end()));
  60   VERIFY(std::crend(il) == std::reverse_iterator<const int*>(il.begin()));
  61 }
  62
  63 int
  64 test04()
  65 {
  66   std::vector<int> v{1};
  67   VERIFY(std::cbegin(v) == v.cbegin());
  68   VERIFY(std::cend(v) == v.cend());
  69   VERIFY(std::rbegin(v) == v.rbegin());
  70   VERIFY(std::rend(v) == v.rend());
  71   VERIFY(std::crbegin(v) == v.crbegin());
  72   VERIFY(std::crend(v) == v.crend());
  73 }
  74
  75 int
  76 main()
  77 {
  78   test01();
  79   test02();
  80   test03();
  81   test04();
  82 }