libstdc++-v3/testsuite/23_containers/deque/debug/invalidation/2.cc

   1 // Deque iterator invalidation tests
   2
   3 // Copyright (C) 2003, 2004, 2005, 2006, 2009 Free Software Foundation, Inc.
   4 //
   5 // This file is part of the GNU ISO C++ Library.  This library is free
   6 // software; you can redistribute it and/or modify it under the
   7 // terms of the GNU General Public License as published by the
   8 // Free Software Foundation; either version 3, or (at your option)
   9 // any later version.
  10
  11 // This library is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15
  16 // You should have received a copy of the GNU General Public License along
  17 // with this library; see the file COPYING3.  If not see
  18 // <http://www.gnu.org/licenses/>.
  19
  20 #include <debug/deque>
  21 #include <testsuite_hooks.h>
  22
  23 using __gnu_debug::deque;
  24
  25 bool test = true;
  26
  27 // Resize
  28 void test02()
  29 {
  30   deque<int> v(10, 17);
  31
  32   deque<int>::iterator before = v.begin() + 6;
  33   deque<int>::iterator at = before + 1;
  34   deque<int>::iterator after = at + 1;
  35
  36   // Shrink
  37   v.resize(7);
  38   VERIFY(before._M_dereferenceable());
  39   VERIFY(at._M_singular());
  40   VERIFY(after._M_singular());
  41
  42   // Grow
  43   before = v.begin() + 6;
  44   v.resize(17);
  45   VERIFY(before._M_singular());
  46 }
  47
  48 int main()
  49 {
  50   test02();
  51   return 0;
  52 }