Re: [boost] [Config] Big changes in C++0x detection...

Subject: Re: [boost] [Config] Big changes in C++0x detection...
From: Eric Niebler (eric_at_[hidden])
Date: 2011-03-17 08:45:38

On 3/17/2011 4:40 PM, John Maddock wrote:
>> Yes. So the behavior of vc10's decltype wrt this issue is in conformance
>> with /current/ working paper -- which is broken, according to n3233. It
>> will be discussed soon in Madrid. If the proposed wording is accepted
>> (and I hope to god it is), then VC10's decltype --along with everybody
>> else's-- will need to be fixed.
>>
>> But please fix it anyway. :-)
> 
> Eric, is it still your opinion that enabling decltype for vc-10 in
> Boost.Config will break too much for it to be worth it?

I worked around the problem in Proto, so Proto and its dependencies
should be ok -- so flip it, right? OTOH, we flip it, then users' code
could break the way Proto did -- so don't flip it, right? OTOH, if n3233
gets rejected, then our hand is forced: vc10's decltype is strictly
conforming, even if it breaks stuff -- so why not just flip it now,
right? I've run out of hands, and I haven't seen a good option yet.

Sure, yeah, what the hell, flip the switch on trunk and see what breaks.
Whee!

/me ducks

-- 
Eric Niebler
BoostPro Computing
http://www.boostpro.com