PostgreSQL 13.4, 12.8 segfault

postgresql-segfault.sql

CREATE SCHEMA debug;

CREATE TABLE debug.downloaded_images (
    itemid text NOT NULL,
    property text NOT NULL,
    image_number integer DEFAULT 0 NOT NULL,
    filename text,
    download_time timestamp without time zone DEFAULT CURRENT_TIMESTAMP,
    failures_count integer DEFAULT 0
);

COPY debug.downloaded_images (itemid, property, image_number, filename, download_time, failures_count) FROM stdin;
1190300 categoryPagePhotoUrl    0       \N      2021-09-02 16:12:39.053552      5
\.

ALTER TABLE ONLY debug.downloaded_images
    ADD CONSTRAINT downloaded_images_pkey PRIMARY KEY (itemid, property, image_number);

BEGIN;

CREATE TABLE IF NOT EXISTS "debug"."foo"
          (itemId TEXT,
           last_update TIMESTAMP,
           PRIMARY KEY(itemId)
           );

DECLARE "test-cursor-crash" CURSOR WITH HOLD FOR
            SELECT di.itemId FROM "debug".downloaded_images di
            LEFT JOIN (SELECT itemId, MIN(last_update) as last_update FROM "debug"."foo" GROUP BY itemId) computed ON di.itemId=computed.itemId
            WHERE COALESCE(last_update, '1970-01-01') < download_time;

FETCH 10000 IN "test-cursor-crash";

COMMIT;