diff options
Diffstat (limited to 'libstdc++-v3/testsuite/20_util/shared_ptr/observers/use_count.cc')
-rw-r--r-- | libstdc++-v3/testsuite/20_util/shared_ptr/observers/use_count.cc | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/libstdc++-v3/testsuite/20_util/shared_ptr/observers/use_count.cc b/libstdc++-v3/testsuite/20_util/shared_ptr/observers/use_count.cc new file mode 100644 index 00000000000..8e074a8b888 --- /dev/null +++ b/libstdc++-v3/testsuite/20_util/shared_ptr/observers/use_count.cc @@ -0,0 +1,81 @@ +// { dg-options "-std=gnu++0x" } + +// Copyright (C) 2005, 2006, 2007 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 2, 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 COPYING. If not, write to the Free +// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, +// USA. + +// 20.6.6.2 Template class shared_ptr [util.smartptr.shared] + +#include <memory> +#include <testsuite_hooks.h> + +struct A { }; +struct B : A { }; + +// 20.6.6.2.5 shared_ptr observers [util.smartptr.shared.obs] + +// use_count +int +test01() +{ + bool test __attribute__((unused)) = true; + + const std::shared_ptr<A> p1; + VERIFY( p1.use_count() == 0 ); + const std::shared_ptr<A> p2(p1); + VERIFY( p1.use_count() == 0 ); + + return 0; +} + +int +test02() +{ + bool test __attribute__((unused)) = true; + + std::shared_ptr<A> p1(new A); + std::shared_ptr<A> p2(p1); + p1.reset(); + VERIFY( p1.use_count() == 0 ); + VERIFY( p2.use_count() == 1 ); + + return 0; +} + +int +test03() +{ + bool test __attribute__((unused)) = true; + + std::shared_ptr<A> p1(new A); + std::shared_ptr<A> p2(p1); + p2.reset(new B); + VERIFY( p1.use_count() == 1 ); + VERIFY( p2.use_count() == 1 ); + + return 0; +} + + +int +main() +{ + test01(); + test02(); + test03(); + return 0; +} |