Using C++ in gcc (was Re: [RFC] type safe trees)

[Richard Kenner]

    >   (2) Writing gcc in C++ is a better idea than writing it in an
    >         invented language of our own that gets turned into C by
    >         specially written tools.
    >
    > Sure.  But I haven't seen a proposal to write any significant chunk of
    > code in that language, just a data structure description.

    http://gcc.gnu.org/ml/gcc/2004-06/msg01466.html

Where in that posting is such a proposal?