[cfe-dev] Macro expansion weirdness (or bug?)

[Abramo Bagnara]

Il 25/03/2010 20:43, Chris Lattner ha scritto:
> 
> On Mar 25, 2010, at 12:08 PM, Abramo Bagnara wrote:
> 
>> 
>> From your message it seems you're expecting *more* callback
>> invocations in the first sample, while I'd expect *less* callback
>> invocations in the second sample.
>> 
>> Could you explain better your position?
> 
> My position is basically that the preprocessor is incredibly
> scary/confusing and implementing it damaged me.  :)
> 
> I don't recall enough of the details to really say which way is right
> or wrong, but tokens coming out at -E is a good indicator that the
> right thing is happening.

Then I'll propose you soon a patch to invoke MacroExpands callback only
when expansion do happens... ;-)

-- 
Abramo Bagnara

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