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

   1 // Set iterator invalidation tests
   2
   3 // Copyright (C) 2003, 2004, 2005, 2006 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, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
  19 // USA.
  20
  21 #include <debug/set>
  22 #include <iterator>
  23 #include <testsuite_hooks.h>
  24
  25 using __gnu_debug::set;
  26 using std::advance;
  27
  28 // Erase
  29 void test02()
  30 {
  31   bool test __attribute__((unused)) = true;
  32
  33   set<int> v;
  34   for (int i = 0; i < 20; ++i)
  35     v.insert(i);
  36
  37   // Single element erase (middle)
  38   set<int>::iterator before = v.begin();
  39   set<int>::iterator at = before;
  40   advance(at, 3);
  41   set<int>::iterator after = at;
  42   ++after;
  43   v.erase(at);
  44   VERIFY(before._M_dereferenceable());
  45   VERIFY(at._M_singular());
  46   VERIFY(after._M_dereferenceable());
  47
  48   // Multiple element erase
  49   before = v.begin();
  50   at = before;
  51   advance(at, 3);
  52   after = at;
  53   advance(after, 4);
  54   v.erase(at, after);
  55   VERIFY(before._M_dereferenceable());
  56   VERIFY(at._M_singular());
  57
  58   // clear()
  59   before = v.begin();
  60   set<int>::iterator finish = v.end();
  61   VERIFY(before._M_dereferenceable());
  62   v.clear();
  63   VERIFY(before._M_singular());
  64   VERIFY(!finish._M_singular() && !finish._M_dereferenceable());
  65 }
  66
  67 int main()
  68 {
  69   test02();
  70   return 0;
  71 }