Re: BUG #5748: Invalid oidvector data during binary recv

Heikki Linnakangas <heikki(dot)linnakangas(at)enterprisedb(dot)com> writes:
> On 11.11.2010 17:48, Tom Lane wrote:
>> The problem seems to be that array_recv passes back a zero-dimensional
>> array, *not* a 1-D array, when it observes that the input has no
>> elements. A zero-D array is not part of the subset of possible arrays
>> that we allow for oidvector.

> Yeah, I just reached that conclusion too..

>> I'm less than convinced that this is worth fixing. oidvector is not
>> intended for general-purpose use anyway. What's the use-case where this
>> would come up?

> I don't see any use case either, but I guess it would be nice to fix for
> the sake of completeness.

The least risky fix would be to make oidvectorrecv check for a zero-D
result from array_recv and replace it with an empty 1-D result. I'm
not sufficiently excited about it to do it myself, but if you are,
have at it.

regards, tom lane