On 02/23/2016 09:11 PM, Jeff Epler wrote:
> Since you are already using cc extensions like ({ ... }), you may prefer
> to use __COUNTER__ rather than __LINE__.
>
>
> Consider preprocessor input like
> #define X __LINE__
> #define Y X,X,X,X
>
> Y;
>
> #undef X
> #define X __COUNTER__
>
> Y;
>
> The first definition of X gives
> 4,4,4,4; // depending on the line that first Y; is on
> and the second one gives
> 0,1,2,3;
>
>
> This can be particularly important if mrs() is used multiple times in another
> macro, since when the macro is expanded it is all expanded with the same
> value for __LINE__.
Thank's for the hint. That is indeed alot better than __LINE__. I had
totally forgoten about __COUNTER__.
regards, Matthias
--
Matthias Pfaller Software Entwicklung
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