[RFC] Are variadic macros forbidden?

[Benjamin Kosnik]

> a few days ago, only for a couple of hours I had variadic macros in my 
> local tr1/type_traits... I wonder, how do we stand wrt that extension? 
> Shall we do our best to avoid it?

Dunno. In general, I think we should strive to write standard C++. Where
that is not possible, or where extensions make a measurable performance
or functional difference, we should use extensions.

If you think using variadic macros is important or gives libstdc++ some
kind of advantage, I'd say go for it, or at least explore that option
and prepare a patch. 

Not quite sure how useful that is...

best,
benjamin