oright            489 sys/tree.h     					struct type *oright;		\
oright            490 sys/tree.h     					if ((oright = RB_RIGHT(tmp, field)))\
oright            491 sys/tree.h     						RB_COLOR(oright, field) = RB_BLACK;\
oright            493 sys/tree.h     					RB_ROTATE_LEFT(head, tmp, oright, field);\