Re: BUG #13680: PostgreSQL backend process crashes on jsonb_object_agg() in plpgsql recursive function

Michael Paquier <michael.paquier@gmail.com> writes:
> It happens that jsonb_object_agg_transfn is not able to manage
> correctly NULL values in the context of a JSONB value, and it seems to
> me that this is caused by an oversight in datum_to_jsonb regarding the
> handling of NULL values.

> Attached is a patch with some regression tests for master and
> REL9_5_STABLE where the bug has been introduced.

This looks sane to me, although since the function's header comment
specifies that tcategory is not to be relied on when is_null is true,
I think it would be cleaner to test is_null before looking at tcategory.
Will adjust and push.

            regards, tom lane