Tom Lane <tgl@sss.pgh.pa.us> writes:
> We'd have to make sure zero is never the *correct* value of the offset,
> but that just means wasting one word, which seems no problem.
In theory it's possible for only half the word to be written or even to have
outright garbage show up. In practice I think there are no actual
architectures where this can really happen though.
--
greg