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Re: [SG10] __has_[cpp_]attribute

From: Stephen Kelly <steveire_at_[hidden]>
Date: Sun, 15 Jun 2014 08:56:05 +0200
Stephen Kelly wrote:

> Richard Smith wrote:
>> 1) That's a *lot* of macros. We might be able to get away with the cost
>> of
>> the number of macros that SG10 is currently proposing, but I would be
>> *seriously* concerned about a measurable performance cost (on compiling
>> an empty file, which is not actually an irrelevant concern) of
>> predefining hundreds of __has_attribute macros.
>> 2) Either of those identifiers could contain underscores, and there is
>> no
>> other separator character that works.
>> [3) It's ugly.]
> Good points.

Here's something I didn't expect: User libraries defining the __foo macros


Should that be encouraged or discouraged?



Received on 2014-06-15 08:56:11