Re: [boost] Re: Conversion from auto_ptr to scoped_ptr?

From: Peter Dimov (pdimov_at_[hidden])
Date: 2002-06-12 12:46:24

From: "Markus Schöpflin" <markus.schoepflin_at_[hidden]>
> Peter Dimov wrote:
> >
> > From: "Markus Schöpflin" <markus.schoepflin_at_[hidden]>
>
> [snip]
>
> > > std::scoped_ptr<Obj> p(create_obj());
> >
> > No, unfortunately it will not. The constructor will take a non-const
> > reference to auto_ptr, and those cannot be bound to rvalues.
std::auto_ptr
> > uses an interesting (and obscure) technique to allow
> >
>
> Hmm, I just hacked my copy of scoped_ptr.hpp and added
>
> explicit scoped_ptr(std::auto_ptr<T> &p): ptr(p.release()) {}
>
> and it works as expected, taking away ownership from auto_ptr and giving
> it to scoped_ptr.
>
> Is this something my compiler (MSVC6SP5) allows as an extenstion?

Yes, this is a Microsoft extension. VC 7 doesn't even warn. Odd.