buildkernel failure on latest -stable source

[Peter van Heusden]

I recently re-installed a local machine with FreeBSD 6.1 BETA 4, in
order to get around the SETFEATURES SET TRANSFER MODE problem I emailed
the list about earlier. I'm still having problems (slightly different
errors) when running with normal settings, so I've been running this box
in 'safe' mode. I did a cvsup of the stable tree, and have now tried a
make buildworld and make buildkernel. However, my make buildkernel fails
with the following output:

cc -c -O -pipe  -Wall -Wredundant-decls -Wnested-externs
-Wstrict-prototypes  -Wmissing-prototypes -Wpointer-arith -Winline
-Wcast-qual  -fformat-extensions -std=c99 -g -nostdinc -I-  -I.
-I/usr/src/sys -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 -I/usr/src/sys/dev/twa -D_KERNEL
-DHAVE_KERNEL_OPTION_HEADERS -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  -mno-mmx -mno-3dnow -mno-sse -mno-sse2
-ffreestanding -Werror  /usr/src/sys/kern/kern_sig.c
cc -c -O -pipe  -Wall -Wredundant-decls -Wnested-externs
-Wstrict-prototypes  -Wmissing-prototypes -Wpointer-arith -Winline
-Wcast-qual  -fformat-extensions -std=c99 -g -nostdinc -I-  -I.
-I/usr/src/sys -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 -I/usr/src/sys/dev/twa -D_KERNEL
-DHAVE_KERNEL_OPTION_HEADERS -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  -mno-mmx -mno-3dnow -mno-sse -mno-sse2
-ffreestanding -Werror  /usr/src/sys/kern/kern_subr.c
cc -c -O -pipe  -Wall -Wredundant-decls -Wnested-externs
-Wstrict-prototypes  -Wmissing-prototypes -Wpointer-arith -Winline
-Wcast-qual  -fformat-extensions -std=c99 -g -nostdinc -I-  -I.
-I/usr/src/sys -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 -I/usr/src/sys/dev/twa -D_KERNEL
-DHAVE_KERNEL_OPTION_HEADERS -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  -mno-mmx -mno-3dnow -mno-sse -mno-sse2
-ffreestanding -Werror  /usr/src/sys/kern/kern_sx.c
cc -c -O -pipe  -Wall -Wredundant-decls -Wnested-externs
-Wstrict-prototypes  -Wmissing-prototypes -Wpointer-arith -Winline
-Wcast-qual  -fformat-extensions -std=c99 -g -nostdinc -I-  -I.
-I/usr/src/sys -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 -I/usr/src/sys/dev/twa -D_KERNEL
-DHAVE_KERNEL_OPTION_HEADERS -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  -mno-mmx -mno-3dnow -mno-sse -mno-sse2
-ffreestanding -Werror  /usr/src/sys/kern/kern_synch.c
/usr/src/sys/kern/kern_synch.c:226: warning: function declaration isn't
a prototype
*** Error code 1

Stop in /usr/obj/usr/src/sys/GENERIC.

Has anyone else seen this problem? This is with -stable checked out of
cvsup on Monday, i.e. the 20th of March.

Thanks,
Peter