[boost] Re: Perfect moving (almost)

From: David Abrahams (dave_at_[hidden])
Date: 2004-02-11 12:34:06

"Peter Dimov" <pdimov_at_[hidden]> writes:

> David Abrahams wrote:
>> "Peter Dimov" <pdimov_at_[hidden]> writes:
>> 
>>> The compiler is allowed to elide a temporary created by a copy
>>> constructor.
>>> 
>>> The compiler is _not_ allowed to elide a temporary created by some
>>> other constructor, because this changes observable behavior and is
>>> not explicitly allowed.
>> 
>> I think what's explicitly allowed depends on your reading of 8.5.3/5
>
> No, the relevant portion here is 12.8/15.

1. Do you realize that 12.8/15 was almost completely rewritten by
   Core issue 20?

2. I still think it's arguable that 8.5.3/5 does not require a copy
   constructor to be used in my example, making 12.8/15 irrelevant
   AFAICT.

-- 
Dave Abrahams
Boost Consulting
www.boost-consulting.com