<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"></head><body ><div>I forgot one crucial place: boehm gc itself must be told the set of offsets we may use. It must know that an object it allocated at address n must be kept alive by a word valued at n+k where k is between 0 and 7, or now 15 (or more, per my previous email).</div><div><br></div><div>Note that this may reduce performance in both time and space</div><div>by reducing the effectiveness of gc.</div><div><br></div><div>Zoltan.</div></body></html>