// // Copyright (c) 2012 Peter Dimov // // Distributed under the Boost Software License, Version 1.0. // See accompanying file LICENSE_1_0.txt or copy at // http://www.boost.org/LICENSE_1_0.txt // #include struct X { }; struct Y: public X { }; int main() { boost::shared_ptr px2; px2 = boost::shared_ptr(); }