Re: BUG #6379: SQL Function Causes Back-end Crash

2012/1/4 Paul Ramsey <pramsey(at)cleverelephant(dot)ca>:
> One extra detail, my PostgreSQL is compiled with --enable-cassert.
> This seems to be what sets off the killer function.

me too

Pavel

>
> On Wed, Jan 4, 2012 at 11:25 AM, hubert depesz lubaczewski
> <depesz(at)depesz(dot)com> wrote:
>> On Wed, Jan 04, 2012 at 07:17:17PM +0000, pramsey(at)cleverelephant(dot)ca wrote:
>>> The following bug has been logged on the website:
>>>
>>> Bug reference:      6379
>>> Logged by:          Paul Ramsey
>>> Email address:      pramsey(at)cleverelephant(dot)ca
>>> PostgreSQL version: 9.1.2
>>> Operating system:   OSX 10.6.8
>>> Description:
>>>
>>> CREATE OR REPLACE FUNCTION kill_backend()
>>> RETURNS VOID
>>> AS $$
>>>   DROP TABLE if EXISTS foo;
>>>   CREATE TABLE foo AS SELECT * FROM pg_class LIMIT 1;
>>> $$ LANGUAGE 'SQL';
>>
>> Cannot replicate:
>>
>> (depesz(at)localhost:5910) 20:23:43 [depesz]
>> $ CREATE OR REPLACE FUNCTION kill_backend()
>>>> RETURNS VOID
>>>> AS $$
>>>>   DROP TABLE if EXISTS foo;
>>>>   CREATE TABLE foo AS SELECT * FROM pg_class LIMIT 1;
>>>> $$ LANGUAGE 'SQL';
>> CREATE FUNCTION
>> (depesz(at)localhost:5910) 20:23:49 [depesz]
>> $ select kill_backend();
>> NOTICE:  table "foo" does not exist, skipping
>> CONTEXT:  SQL function "kill_backend" statement 1
>>  kill_backend
>> --------------
>>  [null]
>> (1 row)
>>
>> (depesz(at)localhost:5910) 20:23:55 [depesz]
>> $ select kill_backend();
>>  kill_backend
>> --------------
>>  [null]
>> (1 row)
>>
>> (depesz(at)localhost:5910) 20:23:56 [depesz]
>> $ select kill_backend();
>>  kill_backend
>> --------------
>>  [null]
>> (1 row)
>>
>> (depesz(at)localhost:5910) 20:23:58 [depesz]
>> $ select version();
>>                                                version
>> -------------------------------------------------------------------------------------------------------
>>  PostgreSQL 9.1.2 on x86_64-unknown-linux-gnu, compiled by gcc-4.6.real (Debian 4.6.2-5) 4.6.2, 64-bit
>> (1 row)
>>
>> Side note - definition as is, doesn't work on 9.2:
>> $ CREATE OR REPLACE FUNCTION kill_backend()
>>>> RETURNS VOID
>>>> AS $$
>>>>   DROP TABLE if EXISTS foo;
>>>>   CREATE TABLE foo AS SELECT * FROM pg_class LIMIT 1;
>>>> $$ LANGUAGE 'SQL';
>> ERROR:  language "SQL" does not exist
>>
>> changing it to proper sql (not uppercase) fixed this problem.
>>
>> Best regards,
>>
>> depesz
>>
>> --
>> The best thing about modern society is how easy it is to avoid contact with it.
>>                                                             http://depesz.com/
>
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