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// { dg-options "-std=gnu++0x" }
// Copyright (C) 2010 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/>.
// Check that iterators ownership is correctly manage on swap.
#include <vector>
#include <forward_list>
#include <iostream>
#include <testsuite_hooks.h>
void
test01()
{
bool test __attribute__((unused)) = true;
std::forward_list<int> fl1{1, 3, 5};
std::forward_list<int> fl2{2, 4, 6};
std::vector<std::forward_list<int>::iterator> fl1_its;
fl1_its.push_back(fl1.before_begin());
for (std::forward_list<int>::iterator it = fl1.begin();
it != fl1.end(); ++it)
{
fl1_its.push_back(it);
}
fl1_its.push_back(fl1.end());
std::vector<std::forward_list<int>::iterator> fl2_its;
fl2_its.push_back(fl2.before_begin());
for (std::forward_list<int>::iterator it = fl2.begin();
it != fl2.end(); ++it)
{
fl2_its.push_back(it);
}
fl2_its.push_back(fl2.end());
fl1.swap(fl2);
auto fit = fl1.before_begin();
// before-begin iterator is not transfered:
// TODO: Validate with LWG group how before begin should be
// treated.
VERIFY( fit == fl1_its[0] );
// All other iterators are, even paste-the-end ones:
for (size_t i = 1; i != fl2_its.size(); ++i)
{
VERIFY( ++fit == fl2_its[i] );
}
fit = fl2.before_begin();
// TODO: Validate with LWG group how before begin should be
// treated.
VERIFY( fit == fl2_its[0] );
for (size_t i = 1; i != fl1_its.size(); ++i)
{
VERIFY( ++fit == fl1_its[i] );
}
}
int
main()
{
test01();
return 0;
}
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