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

   1 // Deque iterator invalidation tests
   2
   3 // Copyright (C) 2003 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 2, 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 COPYING.  If not, write to the Free
  18 // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  19 // USA.
  20
  21 #include <debug/deque>
  22 #include <testsuite_hooks.h>
  23
  24 using __gnu_debug::deque;
  25
  26 bool test = true;
  27
  28 // Resize
  29 void test02()
  30 {
  31   deque<int> v(10, 17);
  32
  33   deque<int>::iterator before = v.begin() + 6;
  34   deque<int>::iterator at = before + 1;
  35   deque<int>::iterator after = at + 1;
  36
  37   // Shrink
  38   v.resize(7);
  39   VERIFY(before._M_dereferenceable());
  40   VERIFY(at._M_singular());
  41   VERIFY(after._M_singular());
  42
  43   // Grow
  44   before = v.begin() + 6;
  45   v.resize(17);
  46   VERIFY(before._M_singular());
  47 }
  48
  49 int main()
  50 {
  51   test02();
  52   return !test;
  53 }