[Dev] GCC Front end anyone?

[Andrew C. Oliver]

Hi,

Has anyone done any work on the internals of GCC.  Specifically language 
front-ends?  I'm working on creaing a GCC front end for 
http://www.digitalmars/d.  The front end code for the compiler has been 
released GPL/Artisitic, its just a matter of porting it to GCC.

I've yet to find a working example of the "toy" language referred to in 
the GCC docs, that works with any defined version of GCC.  (So far I 
grab the version of Toy that says its for 3.0 and it turns out not to 
work!  Frustrating!).

Anyone with front end experience that might be able to give me a few 
pointers (pun intended)?

-Andy