next_size         622 gc/allchblk.c  	      signed_word next_size;
next_size         627 gc/allchblk.c  	        next_size = (signed_word)(thishdr -> hb_sz);
next_size         628 gc/allchblk.c  	        if (next_size < size_avail
next_size         629 gc/allchblk.c  	          && next_size >= size_needed