_RB_REMOVE        379 sys/tree.h     struct type *name##_RB_REMOVE(struct name *, struct type *);		\
_RB_REMOVE        511 sys/tree.h     name##_RB_REMOVE(struct name *head, struct type *elm)			\
_RB_REMOVE        666 sys/tree.h     #define RB_REMOVE(name, x, y)	name##_RB_REMOVE(x, y)