irix6.5 bootstrap failure on branch: Unresolved text symbol "type_num_arguments"

[Billinghurst, David (CRTS)]

3.0 branch failure on irix6.5.  Error message is:

make[3]: Leaving directory `/exd4/billingd/obj/gcc/gcc/po'
stage1/xgcc -Bstage1/ -B/exd4/billingd/tmp/gcc/mips-sgi-irix6.5/bin/
-DIN_GCC    -g -O2 -W -Wall -Wwrite-strings -Wstrict-prototypes
-Wmissing-prototypes -Wtraditional -pedantic -Wno-long-long  -DHAVE_CONFIG_H
-o cc1plus \
      cp/call.o cp/decl.o cp/errfn.o cp/expr.o cp/pt.o cp/typeck2.o
cp/class.o cp/decl2.o cp/error.o cp/lex.o cp/parse.o cp/ptree.o cp/rtti.o
cp/spew.o cp/typeck.o cp/cvt.o cp/except.o cp/friend.o cp/init.o cp/method.o
cp/search.o cp/semantics.o cp/tree.o cp/xref.o cp/repo.o cp/dump.o
cp/optimize.o cp/mangle.o c-common.o c-format.o c-pragma.o c-semantics.o
c-lex.o c-dump.o  toplev.o libbackend.a libcpp.a obstack.o
./intl/libintl.a      ../libiberty/libiberty.a
ld32: ERROR 33: Unresolved text symbol "type_num_arguments" -- 1st
referenced by cp/init.o.