Re: traditional cpp

[Anders Magnusson <ragge%ludd.ltu.se@localhost>]

Hm, just curious, do you see any problem with the cpp included in pcc? 
Which is already in-tree?

-- Ragge

David Holland wrote:
> I'm told that we need a traditional cpp for moving clang forward... so
> I wrote one.
>
>    http://www.eecs.harvard.edu/~dholland/netbsd/tradcpp-20101220/
>
> This was written in about twelve hours so it's not exactly perfect,
> and some of the secondary features (most importantly -M and -MD)
> aren't fully implemented yet. It requires perhaps another evening's
> work to be fully viable.
>
> I also apparently don't have the right ideas about comment removal in
> traditional cpp, because it currently exhibits the behavior that
>
>    #define STOP */
>    #define START /*
>    /* hello there STOP fnord START ho hum */
>
> outputs "fnord", which cannot be what anyone intended. How's it
> supposed to be done? Right now it's removing comments after macro
> expansion, but if it removes comments before macro expansion then /**/
> doesn't work for pasting... or else it has to be treated specially and
> stripped out again afterwards?
>
>