cvs up -dPA from about 14 hours ago:

..........................
/d/netbsd-builds/4_99/i386/tools/bin/i386--netbsdelf-gcc
-ffreestanding -fno-zero-initialized-in-bss -Os -Werror -Wall
-Wno-main -Wno-format-zero-length -Wpointer-arith -Wmissing-prototypes
-Wstrict-prototypes -Wswitch -Wshadow -Wcast-qual -Wwrite-strings
-Wno-sign-compare -Wno-pointer-sign -Wno-attributes -Wextra
-Wno-unused-parameter -fno-strict-aliasing -Di386 -I.
-I/usr/src/sys/../common/include -I/usr/src/sys/arch -I/usr/src/sys
-nostdinc -DPIC_DELAY -DMAXUSERS=8 -D_KERNEL -D_KERNEL_OPT
-I/usr/src/sys/lib/libkern/../../../common/lib/libc/quad
-I/usr/src/sys/lib/libkern/../../../common/lib/libc/string -I/usr/src/
sys/lib/libkern/../../../common/lib/libc/arch/i386/string
-I/usr/src/sys/dist/ipf -c /usr/src/sys/ufs/ffs/ffs_snapshot.c
cc1: warnings being treated as errors
/usr/src/sys/ufs/ffs/ffs_snapshot.c:2023: warning: 'readvnblk' defined
but not used

*** Failed target:  ffs_snapshot.o
*** Failed command: echo '# ' "compile GENERIC_TINY/ffs_snapshot.o";
echo /d/netbsd-builds/4_99/i386/tools/bin/i386--netbsdelf-gcc
-ffreestanding -fno-zero-
initialized-in-bss -Os -Werror -Wall -Wno-main -Wno-format-zero-length
-Wpointer-arith -Wmissing-prototypes -Wstrict-prototypes -Wswitch
-Wshadow -Wcast-qual -Wwrite-strings -Wno-sign-compare
-Wno-pointer-sign -Wno-attributes -Wextra -Wno-unused-parameter
-fno-strict-aliasing -Di386 -I. -I/usr/src/sys/../common/include
-I/usr/src/sys/arch -I/usr/src/sys -nostdinc -DPIC_DELAY -DMAXUSERS=8
-D_KERNEL -D_KERNEL_OPT
-I/usr/src/sys/lib/libkern/../../../common/lib/libc/quad
-I/usr/src/sys/lib/libkern/../../../common/lib/libc/string
-I/usr/src/sys/lib/libkern/../../../common/lib/libc/arch/i386/string
-I/usr/src/sys/dist/ipf
-c /usr/src/sys/ufs/ffs/ffs_snapshot.c;
/d/netbsd-builds/4_99/i386/tools/bin/i386--netbsdelf-gcc
-ffreestanding -fno-zero-initialized-in-bss -Os -Werror -Wall
-Wno-main -Wno-format-zero-length -Wpointer-arith -Wmissing-prototypes
-Wstrict-prototypes -Wswitch -Wshadow -Wcast-qual -Wwrite-strings
-Wno-sign-compare -Wno-pointer-sign -Wno-attributes -Wextra
-Wno-unused-parameter -fno-strict-aliasing -Di386 -I.
-I/usr/src/sys/../common/include -I/usr/src/sys/arch -I/us
r/src/sys -nostdinc -DPIC_DELAY -DMAXUSERS=8 -D_KERNEL -D_KERNEL_OPT
-I/usr/src/sys/lib/libkern/../../../common/lib/libc/quad
-I/usr/src/sys/lib/libkern/../
../../common/lib/libc/string
-I/usr/src/sys/lib/libkern/../../../common/lib/libc/arch/i386/string
-I/usr/src/sys/dist/ipf -c /usr/src/sys/ufs/ffs/ffs_snapshot.c
*** Error code 1

Stop.
nbmake: stopped in
/e/obj1/netbsd-builds/4_99/i386/obj/sys/arch/i386/compile/GENERIC_TINY
....................................

(my -uneducated- guess is that it is due to some optimization to bring
the size of boot floppies down)

Chavdar