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

From: Olivier Tournaire (olitour_at_[hidden])
Date: 2007-05-09 19:37:15

Great, that was it.
Best regards.

Peter Dimov a écrit :
> Olivier Tournaire wrote:
>
>   
>>     if ( typeid(m_rectangle.get()) == typeid(rectangle*) )
>>     {
>>         boost::shared_ptr<rectangle> rect( 
>> (rectangle*)(m_rectangle.get()) );
>>     
>
> This is the cause of your immediate problem. You are creating a second 
> shared_ptr to the same raw pointer. This second shared_ptr has no knowledge 
> of m_rectangle and will call delete on the raw pointer when it goes out of 
> scope. Why not just use m_rectangle inside the if? You don't need the cast 
> or the second shared_ptr. 
>
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