58 lines
1.0 KiB
C++
58 lines
1.0 KiB
C++
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// weak_from_test2.cpp
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//
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// Tests weak_from in a destructor
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//
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// Copyright 2014, 2015, 2019 Peter Dimov
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//
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// Distributed under the Boost Software License, Version 1.0.
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// http://www.boost.org/LICENSE_1_0.txt
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#include <boost/smart_ptr/enable_shared_from.hpp>
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#include <boost/weak_ptr.hpp>
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#include <boost/core/lightweight_test.hpp>
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class X: public boost::enable_shared_from
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{
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private:
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boost::weak_ptr<X> px_;
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public:
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X()
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{
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boost::weak_ptr<X> p1 = weak_from( this );
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BOOST_TEST( p1._empty() );
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BOOST_TEST( p1.expired() );
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}
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void check()
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{
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boost::weak_ptr<X> p2 = weak_from( this );
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BOOST_TEST( !p2.expired() );
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BOOST_TEST( p2.lock().get() == this );
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px_ = p2;
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}
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~X()
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{
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boost::weak_ptr<X> p3 = weak_from( this );
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BOOST_TEST( p3.expired() );
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BOOST_TEST( !(px_ < p3) && !(p3 < px_) );
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}
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};
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int main()
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{
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{
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boost::shared_ptr< X > px( new X );
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px->check();
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}
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return boost::report_errors();
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}
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