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Diffstat (limited to 'gcc-4.4.3/libstdc++-v3/testsuite/20_util/shared_ptr/cons/alias.cc')
-rw-r--r-- | gcc-4.4.3/libstdc++-v3/testsuite/20_util/shared_ptr/cons/alias.cc | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/gcc-4.4.3/libstdc++-v3/testsuite/20_util/shared_ptr/cons/alias.cc b/gcc-4.4.3/libstdc++-v3/testsuite/20_util/shared_ptr/cons/alias.cc new file mode 100644 index 000000000..9c39ed50d --- /dev/null +++ b/gcc-4.4.3/libstdc++-v3/testsuite/20_util/shared_ptr/cons/alias.cc @@ -0,0 +1,107 @@ +// { dg-options "-std=gnu++0x" } + +// Copyright (C) 2007, 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/>. + +// 20.6.6.2 Template class shared_ptr [util.smartptr.shared] + +#include <memory> +#include <testsuite_hooks.h> + +struct A +{ + A() : i() { } + virtual ~A() { } + int i; +}; + +struct B : A +{ + B() : A(), a() { } + virtual ~B() { } + A a; +}; + +void deletefunc(A* p) { delete p; } + +// 20.6.6.2.1 shared_ptr constructors [util.smartptr.shared.const] + +// Aliasing constructors + +int test01() +{ + bool test __attribute__((unused)) = true; + + std::shared_ptr<A> a; + std::shared_ptr<bool> b1(a, &test); + VERIFY( b1.use_count() == 0 ); + VERIFY( a.get() == 0 ); + VERIFY( b1.get() == &test ); + + std::shared_ptr<bool> b2(b1); + VERIFY( b2.use_count() == 0 ); + VERIFY( b1.get() == b2.get() ); + + return 0; +} + +int +test02() +{ + bool test __attribute__((unused)) = true; + + std::shared_ptr<A> a(new A); + std::shared_ptr<int> i1(a, &a->i); + VERIFY( i1.use_count() == 2 ); + + std::shared_ptr<int> i2(i1); + VERIFY( i2.use_count() == 3 ); + VERIFY( i2.get() == &a->i ); + + return 0; +} + +int +test03() +{ + bool test __attribute__((unused)) = true; + + std::shared_ptr<B> b(new B); + std::shared_ptr<A> a1(b, b.get()); + std::shared_ptr<A> a2(b, &b->a); + VERIFY( a2.use_count() == 3 ); + VERIFY( a1 == b ); + VERIFY( a2 != b ); + VERIFY( a1.get() != a2.get() ); + + std::shared_ptr<A> a3(a1); + VERIFY( a3 == b ); + + a3 = a2; + VERIFY( a3.get() == &b->a ); + + return 0; +} + +int +main() +{ + test01(); + test02(); + test03(); + return 0; +} |