| // { dg-options "-std=gnu++0x" } |
| |
| // Copyright (C) 2008-2014 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/>. |
| |
| // 20.8.13.2 Template class shared_ptr [util.smartptr.shared] |
| |
| #include <memory> |
| #include <testsuite_hooks.h> |
| |
| struct A { }; |
| |
| namespace std |
| { |
| template<> |
| struct less<A*> : binary_function<A*,A*,bool> |
| { |
| static int count; |
| bool operator()(A* l, A* r) { ++count; return l < r; } |
| }; |
| int less<A*>::count = 0; |
| } |
| |
| // 20.8.13.2.7 shared_ptr comparison [util.smartptr.shared.cmp] |
| |
| |
| int |
| test01() |
| { |
| bool test __attribute__((unused)) = true; |
| |
| std::less<std::shared_ptr<A>> less; |
| // test empty shared_ptrs compare equivalent |
| std::shared_ptr<A> p1; |
| std::shared_ptr<A> p2; |
| VERIFY( !less(p1, p2) && !less(p2, p1) ); |
| VERIFY( std::less<A*>::count == 2 ); |
| return 0; |
| } |
| |
| |
| // Construction from pointer |
| int |
| test02() |
| { |
| bool test __attribute__((unused)) = true; |
| |
| std::less<std::shared_ptr<A>> less; |
| |
| std::shared_ptr<A> empty; |
| std::shared_ptr<A> p1(new A); |
| std::shared_ptr<A> 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<std::shared_ptr<A>> less; |
| |
| A a; |
| std::shared_ptr<A> p1(new A); |
| std::shared_ptr<A> p2(p1, &a); |
| VERIFY( less(p1, p2) || less(p2, p1) ); |
| |
| return 0; |
| } |
| int |
| main() |
| { |
| test01(); |
| test02(); |
| test03(); |
| return 0; |
| } |