Обсуждение: segfault during SELECT using && ANY (ARRAY[NULL]::BOX2D).

Hello.

i faced with pg crashing  in case of use ANY && statement with array with single null element for field of type BOX2D.

for tests i use postgres+postgis 'as-is' without any tuning after installation by command:
apt-get install postgresql-9.5 postgresql-9.5-postgis-2.2 
(also this error reproduced on production server with pg v11)

error is stable reproduced by following commands:

CREATE DATABASE test_pgcrash;
CREATE EXTENSION postgis;
CREATE TABLE pgcrash (box BOX2D);
INSERT INTO pgcrash (box) values ('BOX(0 0, 1 1)');
SELECT * FROM pgcrash WHERE box && ANY(ARRAY[NULL]::BOX2D[]);

and in postgresql log i see:

2019-06-21 12:45:30 +07 [2268-2] LOG:  server process (PID 2311) was terminated by signal 11: Segmentation fault
2019-06-21 12:45:30 +07 [2268-3] DETAIL:  Failed process was running: CREATE EXTENSION postgis;
        CREATE TABLE pgcrash (box BOX2D);
        INSERT INTO pgcrash (box) values ('BOX(0 0, 1 1)');
        SELECT * FROM pgcrash WHERE box && ANY(ARRAY[NULL]::BOX2D[]);
2019-06-21 12:45:30 +07 [2268-4] LOG:  terminating any other active server processes
2019-06-21 12:45:30 +07 [2275-2] WARNING:  terminating connection because of crash of another server process

thanks,

best regards, mikhail.