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Subject: Re: [boost] What to do with platform defining 'null' as preprocessor symbol?
From: Mathias Gaunard (mathias.gaunard_at_[hidden])
Date: 2012-08-24 05:09:02

On 24/08/2012 01:09, Joel de Guzman wrote:
> On 8/24/12 1:58 AM, Eric Niebler wrote:
>> On 8/23/2012 1:42 PM, Jeff Flinn wrote:
>>> Might it not be better to provide some platform specific config file(s)
>>> that undef offending macro names. In the case of nil in fusion, I'd hate
>>> to see a loss in clarity because of some bad platform practice. I've
>>> been able to address these issues by #undef'ing in just a few places.
>> Bad idea, IMO. Boost shouldn't be messing with things defined in 3rd
>> party headers, especially platform headers. #including a boost header
>> shouldn't change the meaning of existing code, or make valid platform
>> code invalid. The same reason went into the Boost min/max guidelines and
>> Herculean effort to bring our codebase into compliance with them.
> It's been a long standing issue that I can't seem to find a resolution
> for: Fusion's use of nil. What can we do about it? Nothing? Do we
> just let the user deal with it themselves (e.g. by #undef'ing).
> I am somehow being compelled to succumb to the pressure. Mac folks
> have been pleading for years now to rename struct nil to something
> else. Unfortunately, it's part of the API:

Name it nil_, and if 'nil' is not defined, provide a typedef named nil
as well.

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