libstdc++-v3/testsuite/23_containers/forward_list/operations/remove_freed.cc

   1 // { dg-do run { target c++11 } }
   2
   3 // 2010-08-11  Paolo Carlini  <paolo.carlini@oracle.com>
   4 //
   5 // Copyright (C) 2010-2020 Free Software Foundation, Inc.
   6 //
   7 // This file is part of the GNU ISO C++ Library.  This library is free
   8 // software; you can redistribute it and/or modify it under the
   9 // terms of the GNU General Public License as published by the
  10 // Free Software Foundation; either version 3, or (at your option)
  11 // any later version.
  12 //
  13 // This library is distributed in the hope that it will be useful,
  14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 // GNU General Public License for more details.
  17 //
  18 // You should have received a copy of the GNU General Public License along
  19 // with this library; see the file COPYING3.  If not see
  20 // <http://www.gnu.org/licenses/>.
  21
  22 #include <forward_list>
  23 #include <testsuite_hooks.h>
  24
  25 // 23.3.3.5 forward_list operations [forwardlist.ops]
  26
  27 // Used to cause many Valgrind errors: LWG 526-type situation.
  28 void test01()
  29 {
  30   std::forward_list<int> fl1;
  31
  32   fl1.push_front(1);
  33   fl1.push_front(2);
  34   fl1.push_front(3);
  35   fl1.push_front(4);
  36   fl1.push_front(1);
  37
  38   fl1.remove(*fl1.begin());
  39
  40   VERIFY( std::distance(fl1.begin(), fl1.end()) == 3 );
  41
  42   auto it1 = fl1.begin();
  43
  44   VERIFY( *it1 == 4 );
  45   ++it1;
  46   VERIFY( *it1 == 3 );
  47   ++it1;
  48   VERIFY( *it1 == 2 );
  49
  50   std::forward_list<int> fl2;
  51
  52   fl2.push_front(3);
  53   fl2.push_front(3);
  54   fl2.push_front(3);
  55   fl2.push_front(3);
  56   fl2.push_front(3);
  57
  58   auto it2 = fl2.begin();
  59   ++it2;
  60   ++it2;
  61
  62   fl2.remove(*it2);
  63
  64   VERIFY( std::distance(fl2.begin(), fl2.end()) == 0 );
  65
  66   std::forward_list<int> fl3;
  67
  68   fl3.push_front(1);
  69   fl3.push_front(2);
  70   fl3.push_front(3);
  71   fl3.push_front(3);
  72   fl3.push_front(3);
  73
  74   auto it3 = fl3.begin();
  75   ++it3;
  76   ++it3;
  77
  78   fl3.remove(*it3);
  79
  80   VERIFY( std::distance(fl3.begin(), fl3.end()) == 2 );
  81
  82   it3 = fl3.begin();
  83   VERIFY( *it3 == 2 );
  84   ++it3;
  85   VERIFY( *it3 == 1 );
  86 }
  87
  88 int main()
  89 {
  90   test01();
  91   return 0;
  92 }