Hi,
The following sequence of commands causes a reproducible backend crash:
$ createdb test
$ psql test
test=# CREATE TABLE test (foo text);
test=# WITH json_cte AS (SELECT * FROM json_populate_recordset(null::test, '[]'))
test-# UPDATE test
test-# SET foo = json_cte.foo
test-# FROM json_cte;
server closed the connection unexpectedly
This probably means the server terminated abnormally
before or while processing the request.
The connection to the server was lost. Attempting reset: Failed.
Here's the postgres output:
wrote crash dump to file "crashdumps\postgres-pid14356-221788734.mdmp"
2019-07-31 10:45:17.989 CEST [1744] LOG: server process (PID 14356) was terminated by exception 0xC0000005
2019-07-31 10:45:17.989 CEST [1744] DETAIL: Failed process was running: WITH json_cte AS (SELECT * FROM json_populate_recordset(null::test, '[]'))
UPDATE test
SET foo = json_cte.foo
FROM json_cte;
2019-07-31 10:45:17.989 CEST [1744] HINT: See C include file "ntstatus.h" for a description of the hexadecimal value.
2019-07-31 10:45:17.990 CEST [1744] LOG: terminating any other active server processes
2019-07-31 10:45:18.016 CEST [18716] WARNING: terminating connection because of crash of another server process
2019-07-31 10:45:18.016 CEST [18716] DETAIL: The postmaster has commanded this server process to roll back the current transaction and exit, because another server process exited abnormally and possibly corrupted shared memory.
2019-07-31 10:45:18.016 CEST [18716] HINT: In a moment you should be able to reconnect to the database and repeat your command.
2019-07-31 10:45:18.073 CEST [1744] LOG: all server processes terminated; reinitializing
2019-07-31 10:45:18.174 CEST [4436] FATAL: the database system is in recovery mode
2019-07-31 10:45:18.177 CEST [1724] LOG: database system was interrupted; last known up at 2019-07-31 10:39:13 CEST
2019-07-31 10:45:30.266 CEST [1724] LOG: database system was not properly shut down; automatic recovery in progress
2019-07-31 10:45:30.303 CEST [1724] LOG: redo starts at 0/B4F00530
2019-07-31 10:45:30.303 CEST [1724] LOG: invalid record length at 0/B4F00568: wanted 24, got 0
2019-07-31 10:45:30.307 CEST [1724] LOG: redo done at 0/B4F00530
2019-07-31 10:45:30.501 CEST [1744] LOG: database system is ready to accept connections
VERSION(): PostgreSQL 11.1, compiled by Visual C++ build 1914, 64-bit
Running on Windows 10.0.17134.885
Crash dump is attached.
All the best,
Marks