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

   1 // Map iterator invalidation tests
   2
   3 // Copyright (C) 2003, 2004, 2005, 2006, 2009 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 3, 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 COPYING3.  If not see
  18 // <http://www.gnu.org/licenses/>.
  19
  20 #include <debug/map>
  21 #include <iterator>
  22 #include <testsuite_hooks.h>
  23
  24 using __gnu_debug::map;
  25 using std::advance;
  26
  27 bool test = true;
  28
  29 // Assignment
  30 void test01()
  31 {
  32   map<int, int> v1;
  33   map<int, int> v2;
  34
  35   v1[17] = 42;
  36
  37   map<int, int>::iterator start = v1.begin();
  38   map<int, int>::iterator finish = v1.end();
  39   VERIFY(start._M_dereferenceable());
  40   VERIFY(!finish._M_dereferenceable() && !finish._M_singular());
  41
  42   v1 = v2;
  43   VERIFY(start._M_singular());
  44   VERIFY(!finish._M_dereferenceable() && !finish._M_singular());
  45 }
  46
  47 int main()
  48 {
  49   test01();
  50   return 0;
  51 }