Re: Segmentation fault with PG-12

On 2019-10-10 15:32:38 -0400, Tom Lane wrote:
> Andres Freund <andres(at)anarazel(dot)de> writes:
> > On 2019-10-09 10:16:37 -0400, Tom Lane wrote:
> >> Well, it shows that the failure is occurring while trying to evaluate
> >> a variable in a trigger's WHEN clause during
> >> "UPDATE origo_email_delivery SET folder_id=$1, created=$2\nWHERE entity_id IN ($3)\nRETURNING entity_id"
> >> And I'd bet that the root cause is something to do with Andres' tuple slot
> >> work. But (at least to my eye) it's not apparent exactly what's wrong.
>
> > It looks like this could "just" be another report of #16036, which was
> > already fixed in:
> > commit d986d4e87f61c68f52c68ebc274960dc664b7b4e
> > Author: Andres Freund <andres(at)anarazel(dot)de>
> > Date: 2019-10-04 11:59:34 -0700
> > Fix crash caused by EPQ happening with a before update trigger present.
>
> Bingo. I can reproduce the crash (using concurrent updates of the same
> table row, in the schema Andreas sent off-list) on the predecessor of
> that commit, but on that commit it's fine.

Cool, and thanks for checking.