Re: [Boost-users] [shared_ptr] A newbie boost::shared_ptr question

From: Olivier Tournaire (olitour_at_[hidden])
Date: 2007-05-09 11:50:40

No one can help me ?

2007/5/8, Olivier Tournaire <olitour_at_[hidden]>:
>
> m_rectangle is private of rectangle_with_profile<Rect_class> and defined
> as
> boost::shared_ptr<Rect_class> m_rectangle;
>
> Thanks
>
> 2007/5/8, Manuel Jung < gzahl_at_[hidden]>:
> >
> > Olivier Tournaire wrote:
> >
> > > Hi all,
> > >
> > > I am trying to use shared_ptr in my code, but, I encoutered some
> > problems.
> > > Here is a piece of my code :
> > >
> > > The main :
> > >
> > > boost::shared_ptr<OGRRectangle> rect( new OGRRectangle(5.,TPoint2D
> > > <double>(50.,20.),0.1325) );
> > > boost::shared_ptr< rectangle_with_profile<OGRRectangle> > r( new
> > > rectangle_with_profile<OGRRectangle> ( rect , 5 , 12 , 1.5 , EXTREME)
> > );
> > >
> > > The rectangle_with_profile<T> constructor :
> > >
> > > template <class Rect_class>
> > > rectangle_with_profile<Rect_class>::rectangle_with_profile(
> > > boost::shared_ptr<Rect_class> rect , const unsigned int &nb_profiles ,
> >
> > > const unsigned int &nb_points , const double &distance , const
> > > eProfilePosition &position=CENTER )
> > > {
> > >     m_rectangle = rect;
> > >    // ...
> > >    // ...
> > > }
> >
> > What is the Type of m_rectangle? It should be m_rectangle? If it isnt,
> > this
> > is maybe the problem (And it is of type scoped_ptr e.g.)
> > Because than maybe the scoped_ptr would call the destructor. Could you
> > post
> > some more quellcode?
> > Greetings
> > Manuel Jung
> >
> >
> > > Just after the line
> > > boost::shared_ptr< rectangle_with_profile<OGRRectangle> > r( new
> > > rectangle_with_profile<OGRRectangle> ( rect , 5 , 12 , 1.5 , EXTREME)
> > );
> > > the rect<T> destructor is called, and the m_rectangle in
> > > rectangle_with_profile handles a deleted pointer ...
> > >
> > > What am I missing ?
> > >
> > > Thanks in advance for your help.
> > >
> >
> >
> > _______________________________________________
> > Boost-users mailing list
> > Boost-users_at_[hidden]
> > http://lists.boost.org/mailman/listinfo.cgi/boost-users
> >
>
>
>
> --
> Le temps des cerises reviendra. Dans l'immédiat, c'est le temps des
> noyaux. Courage.
>

-- 
Le temps des cerises reviendra. Dans l'immédiat, c'est le temps des noyaux.
Courage.