isql 5.x crashes when executing test from QA suite (perhaps, related to CORE-5275 / #5553)

[pavel-zotov]

Ticket has been created after discussion with Alex.
Crash occurred on FB 5.0.0.890, ServerMode = SS, timestamp: 20230107 11:30:49.075
Most likely this was caused by core_5275_test.py
( #5553 )

Following is part of execution log, timestamps refer to the end moments of each test:

2023-01-07 11:30:27.659 tests/bugs/core_5270_test.py::test_1 PASSED                         [1105/2242]
2023-01-07 11:30:28.667 tests/bugs/core_5271_test.py::test_1 PASSED                         [1106/2242]
2023-01-07 11:30:31.470 tests/bugs/core_5273_test.py::test_1 PASSED                         [1107/2242]
2023-01-07 11:30:49.212 tests/bugs/core_5275_test.py::test_1 PASSED                         [1108/2242]
2023-01-07 11:30:49.712 tests/bugs/core_5277_test.py::test_1 PASSED                         [1109/2242]
2023-01-07 11:30:50.389 tests/bugs/core_5279_test.py::test_1 PASSED                         [1110/2242]

Stack trace and dump can be seen in attached files.
PS.
Most "wonderful" here is log: it looks like there was no crash at all, eve test has outcome = 'passed' :-)
tar_cSf_core.isql_LI-T5.0.0.890_20230107_113049.075.dmp.zip
gdb.isql.20230107_113049.075.2.txt.zip