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

   1 // List iterator invalidation tests
   2
   3 // Copyright (C) 2003, 2004 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/list>
  22 #include <iterator>
  23 #include <testsuite_hooks.h>
  24
  25 using __gnu_debug::list;
  26 using std::advance;
  27
  28 bool test = true;
  29
  30 // Resize
  31 void test02()
  32 {
  33   list<int> v(10, 17);
  34
  35   list<int>::iterator before = v.begin();
  36   advance(before, 6);
  37   list<int>::iterator at = before;
  38   advance(at, 1);
  39   list<int>::iterator after = at;
  40   advance(after, 1);
  41   list<int>::iterator finish = v.end();
  42
  43   // Shrink
  44   v.resize(7);
  45   VERIFY(before._M_dereferenceable());
  46   VERIFY(at._M_singular());
  47   VERIFY(after._M_singular());
  48   VERIFY(!finish._M_singular() && !finish._M_dereferenceable());
  49 }
  50
  51 #if !__GXX_WEAK__ && _MT_ALLOCATOR_H
  52 // Explicitly instantiate for systems with no COMDAT or weak support.
  53 template class __gnu_cxx::__mt_alloc<std::_List_node<int> >;
  54 #endif
  55
  56 int main()
  57 {
  58   test02();
  59   return 0;
  60 }