PS: <sys/ucred.h> refers to NGROUPS when I suspect it wants
   NGROUPS_MAX.  The include sequence:
   	#include <limits.h>
   	#include <sys/user.h>
   in gdb/sparc-nat.c trips up because NGROUPS isn't defined
   Who would be interested in this?


hmm..

/sys/sys/param.h:#define        NGROUPS         NGROUPS_MAX     /* max number groups */


so perhaps <sys/param.h> should be included in gdb/sparc-nat.c instead,
(for only NetBSD?) ?