phobos build error

[Michael P.]

Hey, I have been doing work on GDC to try and get it updated to a later DMD front end.
I have been doing it incrementally, and am currently trying to do 1.031-1.032. I have had some problems, like not being able to find a reference to "util_progress"(is it in the DMD backend?), so I just commented it out in the one function that it appeared in. Also an assert failure in statement.c. :P But commented out the assert for now.
Anyways, I am having problems when building phobos. When it get to math.d, I get problems about {standard input}. There is a log of what happens, plus the errors, here:
http://pastebin.com/m2ee8a840
Anyone know what the problem might be?
The project on bitbucket is here:
http://bitbucket.org/goshawk/gdc/overview/
It contains the code I used to try and build GDC with.