The following bug has been logged on the website:
Bug reference: 18170
Logged by: Zuming Jiang
Email address: zuming.jiang@inf.ethz.ch
PostgreSQL version: 16.0
Operating system: Ubuntu 20.04
Description:
My fuzzer finds a bug in Postgres, which triggers an unexpected error.
--- Set up database ---
create table t0 (c1 text, c5 text, c6 text);
create table t2 (vkey int4, c17 text, primary key(vkey));
------------------------
The fuzzer generates a test case:
--- Test case ---
select
rtrim(ref_4.c6, ref_2.c17) as c_0
from
(t0 as ref_0
inner join ((t0 as ref_1
full outer join (t2 as ref_2
right outer join t2 as ref_3
on (ref_2.vkey = ref_3.vkey))
on (ref_1.c1 = ref_2.c17))
left outer join t0 as ref_4
on (ref_1.c5 = ref_4.c1))
on (ref_0.c6 = ref_4.c1))
except all
select ref_6.c17 as c_0 from t2 as ref_6;
------------------------
--- Expected behavior ---
The test case should not trigger any error.
--- Actual behavior ---
The test case trigger an error:
ERROR: no relation entry for relid 3
--- Postgres version ---
Github commit: 26f988212eada9c586223cbbf876c7eb455044d9
Version: PostgreSQL 17devel on x86_64-pc-linux-gnu, compiled by gcc (Ubuntu
9.4.0-1ubuntu1~20.04.2) 9.4.0, 64-bit
--- Platform information ---
Platform: Ubuntu 20.04
Kernel: Linux 5.4.0-147-generic
