// { dg-options "-std=gnu++0x" }
// Copyright (C) 2008, 2009 Free Software Foundation
//
// 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
// .
// 20.8.13.2 Template class shared_ptr [util.smartptr.shared]
#include
#include
struct A { };
namespace std
{
template<>
struct less : binary_function
{
static int count;
bool operator()(A* l, A* r) { ++count; return l < r; }
};
int less::count = 0;
}
// 20.8.13.2.7 shared_ptr comparison [util.smartptr.shared.cmp]
int
test01()
{
bool test __attribute__((unused)) = true;
std::less> less;
// test empty shared_ptrs compare equivalent
std::shared_ptr p1;
std::shared_ptr p2;
VERIFY( !less(p1, p2) && !less(p2, p1) );
VERIFY( std::less::count == 2 );
return 0;
}
// Construction from pointer
int
test02()
{
bool test __attribute__((unused)) = true;
std::less> less;
std::shared_ptr empty;
std::shared_ptr p1(new A);
std::shared_ptr p2(new A);
VERIFY( less(p1, p2) || less(p2, p1) );
VERIFY( !(less(p1, p2) && less(p2, p1)) );
p1.reset();
VERIFY( !less(p1, empty) && !less(empty, p1) );
p2.reset();
VERIFY( !less(p1, p2) && !less(p2, p1) );
return 0;
}
// Aliasing
int
test03()
{
bool test __attribute__((unused)) = true;
std::less> less;
A a;
std::shared_ptr p1(new A);
std::shared_ptr p2(p1, &a);
VERIFY( less(p1, p2) || less(p2, p1) );
return 0;
}
int
main()
{
test01();
test02();
test03();
return 0;
}