Add "-fno-var-tracking" compiler flag to make this go away.
Created attachment 25806 [details]
bdash may want to revert this & land a smarter version of this patch, but right now I can't compile. :-/
Comment on attachment 25806 [details]
In the ChangeLog
s/Please don't die in a fire while/Prevent GCC4.2 from hanging when/
We'll need to get mark to fix this better so we can debug interpreter.cpp in debug builds (which i think this will break)
Transmitting file data ..
Committed revision 39062.
Did you really want to use -fno-var-tracking (due to the issue with missing symbols)? (See <rdar://problem/6414738>.)