Re: [boost] Review Requests: shifted_ptr, list, stack & roofof

From: David Abrahams (dave_at_[hidden])
Date: 2008-05-01 10:03:32

on Thu Mar 13 2008, "Phil Bouchard" <philippe-AT-fornux.com> wrote:

> "David Abrahams" <dave_at_[hidden]> wrote in message 
> news:87skyvltul.fsf_at_gutsy.luannocracy.com...
>
> [...]
>
>> If I understand correctly, none of this code is technically portable; it
>> is only "portable in practice" because of the way C++ is commonly
>> implemented.  Is that correct?
>>
>> It's not necessarily an argument against these proposals, but all Boost
>> library submissions should be very clear about where they rely on
>> unspecified or undefined behavior.
>
> No it is perfectly portable, this function called "roofof" simply cannot be 
> applied to classes having virtual inheritance.  It can be kept as an 
> internal routine quite simply and used with PODs and classes having simple 
> inheritances.
>
> sh::list<> and sh::stack<> classes can be used for different things also.  I 
> will write a pool allocator quickly using sh::list<> with the sh::roofof<> 
> function for demonstration.  I will also rename these for 
> sh::intrusive_list<> and sh::intrusive_stack<>.

I'm sorry I wasn't clearer; I was actually referring to shifted_ptr.

-- 
Dave Abrahams
Boost Consulting
http://boost-consulting.com