nhblks           2841 gc/os_dep.c    	    word nhblks;
nhblks           2857 gc/os_dep.c    	      nhblks = divHBLKSZ(hhdr -> hb_sz);
nhblks           2860 gc/os_dep.c    	      nhblks = OBJ_SZ_TO_BLOCKS(hhdr -> hb_sz);
nhblks           2867 gc/os_dep.c    	      current_start = (current += nhblks);
nhblks           2869 gc/os_dep.c    	      current += nhblks;