kernel build fails

Last cvsup was made few minutes ago ...

cc -c -x assembler-with-cpp -DLOCORE -O -pipe -march=pentiumpro -Wall
-Wredundan
t-decls -Wnested-externs -Wstrict-prototypes  -Wmissing-prototypes
-Wpointer-ari
th -Winline -Wcast-qual  -fformat-extensions -ansi  -nostdinc -I-  -I.
-I../../.
. -I../../../dev -I../../../contrib/dev/acpica -I../../../contrib/ipfilter
-D_KE
RNEL -include opt_global.h -fno-common  -mno-align-long-strings
-mpreferred-stac
k-boundary=2 -ffreestanding -Werror ../../../i386/i386/locore.s
cc -c -O -pipe -march=pentiumpro -Wall -Wredundant-decls -Wnested-externs
-Wstri
ct-prototypes  -Wmissing-prototypes -Wpointer-arith -Winline -Wcast-qual
-fform
at-extensions -ansi  -nostdinc -I-  -I. -I../../.. -I../../../dev
-I../../../con
trib/dev/acpica -I../../../contrib/ipfilter -D_KERNEL -include
opt_global.h -fno
-common  -mno-align-long-strings -mpreferred-stack-boundary=2
-ffreestanding -We
rror  ../../../kern/kern_jail.c
cc1: warnings being treated as errors
../../../kern/kern_jail.c: In function `jail_attach':
../../../kern/kern_jail.c:199: warning: implicit declaration of function
`change
_dir'
../../../kern/kern_jail.c:206: warning: implicit declaration of function
`change
_root'
*** Error code 1