I wrote:
> I think that on a 32-bit machine this would actually result in a
> null-pointer core dump, since the 0.0 would be coerced to a zero
> Datum value. The line is not reached in our regression tests,
> and given the lack of field complaints, it must be hard to reach
> in normal use too. Or 32-bit machines are deader than I thought.
On closer inspection, it's unreachable because bqarr_in won't
accept an empty query, and there is no other function that will
create query_int values. So probably it's not worth the trouble
to back-patch.
regards, tom lane