Re: [Boost-users] Question regarding ptr_containers

From: Thorsten Ottosen (thorsten.ottosen_at_[hidden])
Date: 2006-10-12 12:50:54

Edwin Savarimuthu wrote:
> Hi all,
> Excuse me if this is asked before. I have a question regarding pointer 
> containers. I have an object A which  comes from a third party and 
> *unfortunately* it can throw an exception from the destructor. How 
> ptr_container deals with this situation?

It assumes that the destructor does not throw.

> Let's say I have pointer container going out of scope and when it is 
> trying to delete one of the contained pointer the object's destructor 
> threw an exception. Does the container catch it, ignore it and proceeds 
> with other delete-s? Or is it a requirement for the stored object that 
> it shouldn't throw an exception from the destructor?

It would simply propagate the exception to the caller of the destructor, 
leaving the rest of the objects non-destructed.

So, yes, it is a requirement that destructors don't throw. Like always.

You can change the CloneAllocator to one with a try-catch around the
call to delete.

-Thorsten