libstdc++-v3/testsuite/23_containers/set/modifiers/dr130.cc

// { dg-do run { target c++11 } }
// 2008-07-22  Edward Smith-Rowland  <3dw4rd@verizon.net>
//
// Copyright (C) 2009-2023 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library.  This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING3.  If not see
// <http://www.gnu.org/licenses/>.

#include <set>
#include <testsuite_hooks.h>

//  DR 130. Associative erase should return an iterator.
void
test01()
{
  using namespace std;

  set<int> s0;
  typedef set<int>::iterator iterator;
  typedef set<int>::const_iterator const_iterator;
  typedef pair<iterator, bool> insert_return_type;

  s0.insert(1);
  insert_return_type irt1 = s0.insert(2);
  insert_return_type irt2 = s0.insert(3);

  iterator pos1 = s0.erase(irt1.first);
  VERIFY( pos1 == irt2.first );

  iterator pos2 = s0.erase(irt2.first);
  VERIFY( pos2 == s0.end() );
}

void
test02()
{
  using namespace std;

  set<int> s0;
  typedef set<int>::iterator iterator;
  typedef set<int>::const_iterator const_iterator;
  typedef pair<iterator, bool> insert_return_type;

  insert_return_type irt0 = s0.insert(1);
  s0.insert(2);
  insert_return_type irt2 = s0.insert(3);
  insert_return_type irt3 = s0.insert(4);

  iterator pos1 = s0.erase(irt0.first, irt2.first);
  VERIFY( pos1 == irt2.first );

  iterator pos2 = s0.erase(irt2.first, ++irt3.first);
  VERIFY( pos2 == s0.end() );
}

int
main()
{
  test01();
  test02();
}