fo_set_next       381 gc/finalize.c                    fo_set_next(prev_fo, fo_next(curr_fo));
fo_set_next       400 gc/finalize.c                    fo_set_next(prev_fo, curr_fo);
fo_set_next       454 gc/finalize.c      fo_set_next(new_fo, fo_head[index]);
fo_set_next       609 gc/finalize.c                  fo_set_next(prev_fo, next_fo);
fo_set_next       613 gc/finalize.c                fo_set_next(curr_fo, GC_finalize_now);
fo_set_next       696 gc/finalize.c                fo_set_next(prev_fo, next_fo);
fo_set_next       701 gc/finalize.c            fo_set_next(curr_fo, GC_finalize_now);
fo_set_next       786 gc/finalize.c   	fo_set_next(curr_fo, 0);