libstdc++-v3/testsuite/23_containers/list/invalidation/3.cc

   1 // List 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/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 // Erase
  31 void test03()
  32 {
  33   list<int> v(20, 42);
  34
  35   // Single element erase (middle)
  36   list<int>::iterator before = v.begin();
  37   list<int>::iterator at = before;
  38   advance(at, 3);
  39   list<int>::iterator after = at;
  40   at = v.erase(at);
  41   VERIFY(before._M_dereferenceable());
  42   VERIFY(at._M_dereferenceable());
  43   VERIFY(after._M_singular());
  44
  45   // Single element erase (end)
  46   before = v.begin();
  47   at = before;
  48   after = at;
  49   ++after;
  50   at = v.erase(at);
  51   VERIFY(before._M_singular());
  52   VERIFY(at._M_dereferenceable());
  53   VERIFY(after._M_dereferenceable());
  54
  55   // Multiple element erase
  56   before = v.begin();
  57   at = before;
  58   advance(at, 3);
  59   after = at;
  60   advance(after, 3);
  61   v.erase(at, after);
  62   VERIFY(before._M_dereferenceable());
  63   VERIFY(at._M_singular());
  64
  65   // clear()
  66   before = v.begin();
  67   list<int>::iterator finish = v.end();
  68   VERIFY(before._M_dereferenceable());
  69   v.clear();
  70   VERIFY(before._M_singular());
  71   VERIFY(!finish._M_singular() && !finish._M_dereferenceable());
  72 }
  73
  74 int main()
  75 {
  76   test03();
  77   return !test;
  78 }