Server terminates for SET plus-equal when the original properties has a non-scalar value

[Zainab-Saad]

Describe the bug
Updating properties of a vertex/edge (having a non-scalar value) with SET plus-equal terminates the server

How are you accessing AGE (Command line, driver, etc.)?
Command Line

What data setup do we need to do?
Create 2 vertices with non-scalar property values

SELECT * FROM cypher('graph', $$
CREATE (n: A {map: {a : 1}}), (m: B {lst: [1, 2]})
$$) AS (result agtype);

What is the command that caused the error?
This query terminated the server (same for vertex with label B)

SELECT * FROM cypher('graph', $$
MATCH (n: A) SET n += {bool: true} RETURN n
$$) AS (result agtype);

Expected behavior
Should update the properties as below

                                            result                                            
----------------------------------------------------------------------------------------------
 {"id": 844424930131969, "label": "A", "properties": {"map": {"a": 1}, "bool": true}}::vertex
(1 row)

Environment (please complete the following information):
AGE master (This problem exists for other branches too)

Additional context
SET plus-equal works fine for scalar property values

SELECT * FROM cypher('graph', $$
CREATE (n: C {num : 1}) RETURN n
$$) AS (result agtype);

SELECT * FROM cypher('graph', $$
MATCH (n: C) SET n += {bool: true} RETURN n
$$) AS (result agtype);
                                         result                                         
----------------------------------------------------------------------------------------
 {"id": 1407374883553281, "label": "C", "properties": {"num": 1, "bool": true}}::vertex
(1 row)

[rafsun42]

@Zainab-Saad Are you working on it?

[Zainab-Saad]

@rafsun42 I have created a PR for this, could you review that?

[rafsun42]

@Zainab-Saad This query didn't terminate on my machine (Master, PG15). What PG version are you using?

SELECT * FROM cypher('graph', $$
MATCH (n: A) SET n += {bool: true} RETURN n
$$) AS (result agtype);

EDIT:
I was able to reproduce the issue after compiling PG with --enable-cassert flag.

[Zainab-Saad]

@rafsun42 version is PG 15.1. with the data setup I have provided, this query terminated.

[rafsun42]

@Zainab-Saad
Is this the expected result for your data setup? I get this result on my machine.

Could you also put this on the "Expected behavior" section in case anyone else wants to reproduce the issue?

agedev=# SELECT * FROM cypher('graph', $$
MATCH (n: A) SET n += {bool: true} RETURN n
$$) AS (result agtype);
                                            result                                            
----------------------------------------------------------------------------------------------
 {"id": 844424930131969, "label": "A", "properties": {"map": {"a": 1}, "bool": true}}::vertex
(1 row)