libstdc++-v3/testsuite/23_containers/multimap/invalidation/1.cc

   1 // Multimap iterator invalidation tests
   2
   3 // Copyright (C) 2003, 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/map>
  22 #include <iterator>
  23 #include <testsuite_hooks.h>
  24 #include <utility>
  25
  26 using __gnu_debug::multimap;
  27 using std::advance;
  28
  29 bool test = true;
  30
  31 // Assignment
  32 void test01()
  33 {
  34   multimap<int, int> v1;
  35   multimap<int, int> v2;
  36
  37   v1.insert(std::make_pair(17, 42));
  38
  39   multimap<int, int>::iterator start = v1.begin();
  40   multimap<int, int>::iterator finish = v1.end();
  41   VERIFY(start._M_dereferenceable());
  42   VERIFY(!finish._M_dereferenceable() && !finish._M_singular());
  43
  44   v1 = v2;
  45   VERIFY(start._M_singular());
  46   VERIFY(!finish._M_dereferenceable() && !finish._M_singular());
  47 }
  48
  49 int main()
  50 {
  51   test01();
  52   return 0;
  53 }