tblgen error in svn

This is most likely user error but I am getting:

/a/home/jplevyak/projects/llvm/Debug+Asserts/bin/tblgen: Record `Alias'
does not have a field named `AdditionalMembers'!

make[5]: ***
[/a/home/jplevyak/projects/llvm/tools/clang/include/clang/AST/Debug+Asserts/Attrs.inc.tmp]
Error 1
make[5]: Leaving directory
`/a/home/jplevyak/projects/llvm/tools/clang/include/clang/AST'

While building:

http://llvm.org/svn/llvm-project/llvm/trunk

jplevyak:llvm [414] % uname -a
Linux jplevyak.homeip.net 2.6.34.6-47.fc13.x86_64 #1 SMP Fri Aug 27
08:56:01 UTC 2010 x86_64 x86_64 x86_64 GNU/Linux
jplevyak:llvm [415] % gcc -v
Using built-in specs.
Target: x86_64-redhat-linux
Configured with: ../configure --prefix=/usr --mandir=/usr/share/man
--infodir=/usr/share/info
--with-bugurl=http://bugzilla.redhat.com/bugzilla --enable-bootstrap
--enable-shared --enable-threads=posix --enable-checking=release
--with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions
--enable-gnu-unique-object
--enable-languages=c,c++,objc,obj-c++,java,fortran,ada
--enable-java-awt=gtk --disable-dssi
--with-java-home=/usr/lib/jvm/java-1.5.0-gcj-1.5.0.0/jre
--enable-libgcj-multifile --enable-java-maintainer-mode
--with-ecj-jar=/usr/share/java/eclipse-ecj.jar
--disable-libjava-multilib --with-ppl --with-cloog --with-tune=generic
--with-arch_32=i686 --build=x86_64-redhat-linux
Thread model: posix
gcc version 4.4.4 20100630 (Red Hat 4.4.4-10) (GCC)

Any help appreciated.

john