Re: [boost] Re: scoped_ptr: trivial dtor?

From: Beman Dawes (bdawes_at_[hidden])
Date: 2001-04-02 17:59:26

At 10:25 AM 3/29/2001, Vladimir Prus wrote:

 >Then, scoped_ptr's docs contain an incorrect statement, and that is 
better
 >fixed.

I think it is unclear, but not incorrect.  There is nothing wrong with 
deleting a pointer to an incomplete type if the type has a trivial 
destructor, AFAIK.  I'll rewrite it tomorrow when I feel a bit sharper, and 
post the rewrite here for comment.

 >>> , and that one can assure that you never call delete on an object with
 >>> incomplete type.
 >
 >>How?
 >
 >As I have stated in previous post, with sizeof(T):
 >
 >	~scoped_ptr() {
 >		sizeof(T);
 >		delete p;
 >	}

If you did that, scoped_ptr could not be used with incomplete 
types.  Although you have to be careful that the destructor is trivial, it 
is highly desirable to be able to use scoped_ptr with incomplete types.  I 
must be missing your point.

--Beman