bottom_indx       194 gc/include/private/gc_hdrs.h #   define GET_BI(p, bottom_indx) (bottom_indx) = BI(p)
bottom_indx       202 gc/include/private/gc_hdrs.h #   define GET_BI(p, bottom_indx) \
bottom_indx       210 gc/include/private/gc_hdrs.h 	    (bottom_indx) = _bi; \