Re: [boost] Potential scoped_ptr improvement

Subject: Re: [boost] Potential scoped_ptr improvement
From: Steven Watanabe (watanabesj_at_[hidden])
Date: 2010-09-29 21:53:31

  AMDG

On 9/29/2010 6:01 PM, David Abrahams wrote:
> The incantation
>
>      scoped_ptr<Base>  x( new Derived );
>
> will succeed and produce undefined behavior upon x's destruction unless
> Derived has a trivial or virtual d'tor.
>
> It would be pretty easy to prevent something like that from compiling
> when has_virtual_destructor<Base>::value is false.  Thoughts?

You just need to be careful only to use has_virtual_destructor
when there's compiler support, since the implementation falls
back on always returning false.

In Christ,
Steven Watanabe