Help with a DMD patch

[Vladimir Panteleev]

On Saturday, 16 March 2013 at 18:15:06 UTC, Vladimir Panteleev 
wrote:
> Could a DMD guru have a look and tell me what I'm doing wrong?

Gaaah! My test program doesn't compile even without my patches!

I was fighting against pre-existing bugs in DMD...

Even more embarrassing, is that I had found and filed this bug 
myself:
http://d.puremagic.com/issues/show_bug.cgi?id=9402