build kernel failiure (kern_thr.c)

cc -c -O -pipe -march=athlon -Wall -Wredundant-decls -Wnested-externs
-Wstrict-prototypes  -Wmissing-prototypes -Wpointer-arith -Winline
-Wcast-qual  -fformat-extensions -std=c99  -nostdinc -I-  -I.
-I/usr/src/sys -I/usr/src/sys/contrib/dev/acpica
-I/usr/src/sys/contrib/altq -I/usr/src/sys/contrib/ipfilter
-I/usr/src/sys/contrib/pf -I/usr/src/sys/contrib/dev/ath
-I/usr/src/sys/contrib/dev/ath/freebsd -I/usr/src/sys/contrib/ngatm
-D_KERNEL -include opt_global.h -fno-common -finline-limit=8000 --param
inline-unit-growth=100 --param large-function-growth=1000 
-mno-align-long-strings -mpreferred-stack-boundary=2 -ffreestanding
-Werror  /usr/src/sys/kern/kern_thr.c
/usr/src/sys/kern/kern_thr.c: In function `thr_exit':
/usr/src/sys/kern/kern_thr.c:196: error: structure has no member named
`state'
/usr/src/sys/kern/kern_thr.c:197: error: structure has no member named
`state'
*** Error code 1

Stop in /usr/obj/usr/src/sys/DP.
*** Error code 1