I installed the i386 snapshot of 19991223 on a machine.  After
that, I downloaded cvs and fetched syssrc of the same day.  When I
tried to compile a new kernal, it bombed with:

cc  -O2 -Werror -Wall -Wmissing-prototypes -Wstrict-prototypes  -Wpointer-arith -Wno-main -I. -I../../../../arch -I../../../.. -nostdinc -I../../../../../gnu/sys  -DMAXUSERS=8 -D_KERNEL -Di386  -c ../../../../kern/init_main.c
In file included from ../../../../kern/init_main.c:92:
../../../../sys/syscallargs.h:313: syntax error before `intptr_t'
../../../../sys/syscallargs.h:313: `intptr_t' undeclared here (not in a function)
../../../../sys/syscallargs.h:313: `intptr_t' undeclared here (not in a function)
../../../../sys/syscallargs.h:313: syntax error before `intptr_t'
*** Error code 1

Does anybody have any idea what is wrong?