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

   1 // List iterator invalidation tests
   2
   3 // Copyright (C) 2003-2020 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/list>
  21 #include <iterator>
  22 #include <testsuite_hooks.h>
  23
  24 // Assignment
  25 void test01()
  26 {
  27   using std::advance;
  28
  29   typedef __gnu_debug::list<int> list_type;
  30   list_type v1;
  31   list_type v2;
  32
  33   v1.push_front(17);
  34
  35   list_type::iterator start = v1.begin();
  36   list_type::iterator finish = v1.end();
  37   VERIFY(start._M_dereferenceable());
  38   VERIFY(!finish._M_dereferenceable() && !finish._M_singular());
  39
  40   v1 = v2;
  41   VERIFY(start._M_singular());
  42   VERIFY(!finish._M_dereferenceable() && !finish._M_singular());
  43
  44   finish = v1.end();
  45   v1.assign(v2.begin(), v2.end());
  46   VERIFY(!finish._M_dereferenceable() && !finish._M_singular());
  47
  48   finish = v1.end();
  49   v1.assign(17, 42);
  50   VERIFY(!finish._M_dereferenceable() && !finish._M_singular());
  51 }
  52
  53 int main()
  54 {
  55   test01();
  56   return 0;
  57 }