Re: Ongoing issues with representation of empty arrays

On Mon, Apr 10, 2017 at 11:17 PM, Andrew Gierth
<andrew(at)tao11(dot)riddles(dot)org(dot)uk> wrote:
>>>>>> "Tom" == Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> writes:
>
> >> First is contrib/intarray, _AGAIN_ (see past bugs such as #7730):
> >> ...
> >> I plan to fix this one properly, unless anyone has any objections.
>
> Tom> Just to clarify, what do you think is "properly"?
>
> I would say, that any time an intarray function returns an empty result
> it should be the standard 0-dimensional representation that every other
> array operation uses. The intarray functions all seem already able to
> take such values as inputs. Also there should be regression tests for
> this (none of intarray's existing tests have any empty arrays at all).

Are there any impacts outside of intarray?

merlin