Fix memory leak when deallocating prepared statement in postgres_fdw

michaelpq · michaelpq · commit 7b4c660466dd · 2021-01-26T18:43:01.000+09:00
The leak is minor, so no backpatch is done. Oversight in 21734d2. Reported-by: Tom Lane
diff --git a/contrib/postgres_fdw/postgres_fdw.c b/contrib/postgres_fdw/postgres_fdw.c
@@ -4063,6 +4063,7 @@ deallocate_query(PgFdwModifyState *fmstate)
 	if (PQresultStatus(res) != PGRES_COMMAND_OK)
 		pgfdw_report_error(ERROR, res, fmstate->conn, true, sql);
 	PQclear(res);
+	pfree(fmstate->p_name);
 	fmstate->p_name = NULL;
 }
 

Original file line number	Diff line number	Diff line change
`@@ -4063,6 +4063,7 @@ deallocate_query(PgFdwModifyState *fmstate)`
`4063`	`4063`	`if (PQresultStatus(res) != PGRES_COMMAND_OK)`
`4064`	`4064`	`pgfdw_report_error(ERROR, res, fmstate->conn, true, sql);`
`4065`	`4065`	`PQclear(res);`
	`4066`	`+ pfree(fmstate->p_name);`
`4066`	`4067`	`fmstate->p_name = NULL;`
`4067`	`4068`	`}`
`4068`	`4069`