libstdc++-v3/testsuite/23_containers/unordered_set/insert/24061-set.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_set>
  23 #include <string>
  24 #include <testsuite_hooks.h>
  25
  26 // libstdc++/24061
  27 void test01()
  28 {
  29   typedef std::unordered_set<std::string> Set;
  30   typedef Set::iterator       iterator;
  31   typedef Set::const_iterator const_iterator;
  32
  33   Set s1;
  34
  35   iterator it1 = s1.insert(s1.begin(), "all the love in the world");
  36   VERIFY( s1.size() == 1 );
  37   VERIFY( *it1 == "all the love in the world" );
  38
  39   const_iterator cit1(it1);
  40   const_iterator cit2 = s1.insert(cit1, "you know what you are?");
  41   VERIFY( s1.size() == 2 );
  42   VERIFY( cit2 != cit1 );
  43   VERIFY( *cit2 == "you know what you are?" );
  44
  45   iterator it2 = s1.insert(it1, "all the love in the world");
  46   VERIFY( s1.size() == 2 );
  47   VERIFY( it2 == it1 );
  48   VERIFY( *it2 == "all the love in the world" );
  49 }
  50
  51 int main()
  52 {
  53   test01();
  54   return 0;
  55 }