libstdc++-v3/testsuite/23_containers/unordered_multimap/erase/24061-multimap.cc

   1 // { dg-do run { target c++11 } }
   2
   3 // 2010-02-10  Paolo Carlini  <paolo.carlini@oracle.com>
   4 //
   5 // Copyright (C) 2010-2025 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 <unordered_map>
  23 #include <string>
  24 #include <testsuite_hooks.h>
  25
  26 // libstdc++/24061
  27 void test01()
  28 {
  29   typedef std::unordered_multimap<std::string, int> Mmap;
  30   typedef Mmap::iterator       iterator;
  31   typedef Mmap::const_iterator const_iterator;
  32   typedef Mmap::value_type     value_type;
  33
  34   Mmap mm1;
  35
  36   mm1.insert(value_type("all the love in the world", 1));
  37   mm1.insert(value_type("you know what you are?", 2));
  38   mm1.insert(value_type("the collector", 3));
  39   mm1.insert(value_type("the hand that feeds", 4));
  40   mm1.insert(value_type("love is not enough", 5));
  41   mm1.insert(value_type("every day is exactly the same", 6));
  42   mm1.insert(value_type("with teeth", 7));
  43   mm1.insert(value_type("only", 8));
  44   mm1.insert(value_type("getting smaller", 9));
  45   mm1.insert(value_type("sunspots", 10));
  46
  47   mm1.insert(value_type("you know what you are?", 5));
  48   mm1.insert(value_type("the collector", 6));
  49   mm1.insert(value_type("the hand that feeds", 7));
  50   VERIFY( mm1.size() == 13 );
  51
  52   iterator it1 = mm1.begin();
  53   ++it1;
  54   iterator it2 = it1;
  55   ++it2;
  56   iterator it3 = mm1.erase(it1);
  57   VERIFY( mm1.size() == 12 );
  58   VERIFY( it3 == it2 );
  59   VERIFY( *it3 == *it2 );
  60
  61   iterator it4 = mm1.begin();
  62   ++it4;
  63   ++it4;
  64   ++it4;
  65   iterator it5 = it4;
  66   ++it5;
  67   ++it5;
  68   iterator it6 = mm1.erase(it4, it5);
  69   VERIFY( mm1.size() == 10 );
  70   VERIFY( it6 == it5 );
  71   VERIFY( *it6 == *it5 );
  72
  73   const_iterator it7 = mm1.begin();
  74   ++it7;
  75   ++it7;
  76   ++it7;
  77   const_iterator it8 = it7;
  78   ++it8;
  79   const_iterator it9 = mm1.erase(it7);
  80   VERIFY( mm1.size() == 9 );
  81   VERIFY( it9 == it8 );
  82   VERIFY( *it9 == *it8 );
  83
  84   const_iterator it10 = mm1.begin();
  85   ++it10;
  86   const_iterator it11 = it10;
  87   ++it11;
  88   ++it11;
  89   ++it11;
  90   ++it11;
  91   const_iterator it12 = mm1.erase(it10, it11);
  92   VERIFY( mm1.size() == 5 );
  93   VERIFY( it12 == it11 );
  94   VERIFY( *it12 == *it11 );
  95
  96   iterator it13 = mm1.erase(mm1.begin(), mm1.end());
  97   VERIFY( mm1.size() == 0 );
  98   VERIFY( it13 == mm1.end() );
  99   VERIFY( it13 == mm1.begin() );
 100 }
 101
 102 int main()
 103 {
 104   test01();
 105   return 0;
 106 }