D on x86_64 (amd64) - how far is it?

[Cris]

Wolfgang Draxinger wrote:
> A week ago I got my new shiny AMD64 machine. The only drawback
> is, that the language becoming my favourite one (D of course) is
> not yet x86_64 capable, yet.
> 
> Nevertheless I downloaded gcc-4.0.2 and gdc-0.17 to see how far I
> could get, building a GDC compiler. The building process fails
> at a cc1d stage at an "assert" statement of
> classinfo->struct_size == CLASSINFO_SIZE. I was suprised, that
> CLASSINFO_SIZE was hardcoded to 0x3C IIRC.
> 
> OTOH I want to have a native 64 Bit compiler, and owning a AMD64
> machine I'd like to help and participate where possible.
> 
> Wolfgang Draxinger
> 


And how far is it from GDC becomming an offical part of GCC, as well as 
full gdb support?