With up-to-date source via anoncvs, I got the following build failure:

cc    -O -DIN_GCC -DCROSS_COMPILE  -W -Wall -Wwrite-strings -Wstrict-prototypes 
-Wmissing-prototypes -Wtraditional -pedantic -Wno-long-long   -DHAVE_CONFIG_H  -
o f771 f/bad.o f/bit.o f/bld.o f/com.o f/data.o f/equiv.o f/expr.o  f/global.o f
/implic.o f/info.o f/intrin.o f/lab.o f/lex.o f/malloc.o  f/name.o f/parse.o f/s
rc.o f/st.o f/sta.o f/stb.o f/stc.o  f/std.o f/ste.o f/storag.o f/stp.o f/str.o 
f/sts.o f/stt.o f/stu.o  f/stv.o f/stw.o f/symbol.o f/target.o f/top.o f/type.o 
f/where.o main.o libbackend.a   ../libiberty/libiberty.a
f/com.o(.text+0x102): In function `ffecom_subscript_check_':
: undefined reference to `integer_nonzerop'

*** Failed target:  f771


		--Steve Bellovin, http://www.research.att.com/~smb