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[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [libstdc++-v3/] [testsuite/] [20_util/] [shared_ptr/] [observers/] [owner_before.cc] - Rev 424
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// { 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 // <http://www.gnu.org/licenses/>. // 20.8.13.2 Template class shared_ptr [util.smartptr.shared] #include <memory> #include <testsuite_hooks.h> struct A { int i; virtual ~A() { } }; struct B : A { }; // 20.6.6.2.5 shared_ptr observers [util.smartptr.shared.obs] void test01() { bool test __attribute__((unused)) = true; // test empty shared_ptrs compare equivalent std::shared_ptr<A> p1; std::shared_ptr<B> p2; VERIFY( !p1.owner_before(p2) && !p2.owner_before(p1) ); } // Construction from pointer void test02() { bool test __attribute__((unused)) = true; std::shared_ptr<A> a0; std::shared_ptr<A> a1(new A); VERIFY( a1.owner_before(a0) || a0.owner_before(a1) ); VERIFY( !(a1.owner_before(a0) && a0.owner_before(a1)) ); std::shared_ptr<B> b1(new B); VERIFY( a1.owner_before(b1) || b1.owner_before(a1) ); VERIFY( !(a1.owner_before(b1) && b1.owner_before(a1)) ); std::shared_ptr<A> a2(a1); VERIFY( !a1.owner_before(a2) && !a2.owner_before(a1) ); a2 = b1; VERIFY( !b1.owner_before(a2) && !a2.owner_before(b1) ); std::weak_ptr<A> w1(a1); VERIFY( !a1.owner_before(w1) && !w1.owner_before(a1) ); std::weak_ptr<A> w2(a2); VERIFY( !b1.owner_before(w2) && !w2.owner_before(b1) ); } // Aliasing void test03() { bool test __attribute__((unused)) = true; std::shared_ptr<A> p1(new A()); std::shared_ptr<int> p2(p1, &p1->i); VERIFY( !p1.owner_before(p2) && !p2.owner_before(p1) ); } int main() { test01(); test02(); test03(); return 0; }