RELENG_7 build fails

[Igor B. Bykhalo]

Good day.

I have a couple of rather old amd64 boxes planned to upgrade from RELENG_7,
but for now we needed just to quickly rebuild them (because of
new tzdata).

gate# uname -a
FreeBSD gate.binep.ac.ru 7.3-STABLE FreeBSD 7.3-STABLE #50: Mon Jun  7 12:10:28 MSD 2010     goshik at gate.binep.ac.ru:/usr/obj/usr/src/sys/GATE  amd64

But after csupping with RELENG_7 tag we got buildworld failure:

[...]
cc -O2 -fno-strict-aliasing -pipe -I. -DIN_GCC -DHAVE_CONFIG_H -DPREFIX=\"/usr\" -I/usr/obj/usr/src/gnu/usr.bin/cc/cc_tools/../cc_tools -I/usr/src/gnu/usr.bin/cc/cc_tools/../cc_tools -I/usr/src/gnu/usr.bin/cc/cc_tools/../../../../contrib/gcc -I/usr/src/gnu/usr.bin/cc/cc_tools/../../../../contrib/gcc/config -I/usr/src/gnu/usr.bin/cc/cc_tools/../../../../contrib/gcclibs/include -I/usr/src/gnu/usr.bin/cc/cc_tools/../../../../contrib/gcclibs/libcpp/include -I/usr/src/gnu/usr.bin/cc/cc_tools/../../../../contrib/gcclibs/libdecnumber -g -DGENERATOR_FILE -DHAVE_CONFIG_H  -I/usr/obj/usr/src/tmp/legacy/usr/include -c /usr/src/gnu/usr.bin/cc/cc_tools/../../../../contrib/gcc/genconditions.c
cc -O2 -fno-strict-aliasing -pipe -I. -DIN_GCC -DHAVE_CONFIG_H -DPREFIX=\"/usr\" -I/usr/obj/usr/src/gnu/usr.bin/cc/cc_tools/../cc_tools -I/usr/src/gnu/usr.bin/cc/cc_tools/../cc_tools -I/usr/src/gnu/usr.bin/cc/cc_tools/../../../../contrib/gcc -I/usr/src/gnu/usr.bin/cc/cc_tools/../../../../contrib/gcc/config -I/usr/src/gnu/usr.bin/cc/cc_tools/../../../../contrib/gcclibs/include -I/usr/src/gnu/usr.bin/cc/cc_tools/../../../../contrib/gcclibs/libcpp/include -I/usr/src/gnu/usr.bin/cc/cc_tools/../../../../contrib/gcclibs/libdecnumber -g -DGENERATOR_FILE -DHAVE_CONFIG_H  -I/usr/obj/usr/src/tmp/legacy/usr/include  -L/usr/obj/usr/src/tmp/legacy/usr/lib -o genconditions genconditions.o rtl.o read-rtl.o ggc-none.o vec.o min-insn-modes.o gensupport.o print-rtl.o errors.o libiberty.a -lm
./genconditions /usr/src/gnu/usr.bin/cc/cc_tools/../../../../contrib/gcc/config/i386/i386.md > gencondmd.c
/usr/src/gnu/usr.bin/cc/cc_tools/../../../../contrib/gcc/config/i386/sse.md:4448: invalid decimal constant "UNSPEC_PSHUFB"

/usr/src/gnu/usr.bin/cc/cc_tools/../../../../contrib/gcc/config/i386/sse.md:4448: following context is `))]'
*** Error code 1

Stop in /usr/src/gnu/usr.bin/cc/cc_tools.
*** Error code 1

Stop in /usr/src.
*** Error code 1

Stop in /usr/src.
*** Error code 1

Stop in /usr/src.

Deleting /usr/obj before build doesn't help.

Any thoughts? I have a feeling I'm missing something almost obvious... 8-)

Igor