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Thread: Postgres backend crash on alpha

Postgres backend crash on alpha

From
Mark Volpe
Date:
The following sequence causes the backend
to crash:

CREATE TABLE test1 (a text);
CREATE TABLE test2 (b text);

CREATE RULE test_insert AS ON INSERT TO test1
DO INSTEAD INSERT INTO test2 VALUES (NEW.a);

INSERT INTO test1 VALUES ('crash');


For some reason this only occurs on the alpha platform
(tried on alpha and linux).

If I try this using ints it works fine, though. And the use
of "NEW" seems to be what's screwing it up.

Is there a fix for this?
It is crashing in the _copyConst function on this line:

length = VARSIZE(from->constvalue)

Thanks,
Mark

Re: [SQL] Postgres backend crash on alpha

From
Bruce Momjian
Date:
I would like you to try this on the current snapshot on our ftp server. 
I suspect it has been fixed, but if not, we would like to get it fixed
because we are starting beta in a few days.


> The following sequence causes the backend
> to crash:
> 
> CREATE TABLE test1 (a text);
> CREATE TABLE test2 (b text);
> 
> CREATE RULE test_insert AS ON INSERT TO test1
> DO INSTEAD INSERT INTO test2 VALUES (NEW.a);
> 
> INSERT INTO test1 VALUES ('crash');
> 
> 
> For some reason this only occurs on the alpha platform
> (tried on alpha and linux).
> 
> If I try this using ints it works fine, though. And the use
> of "NEW" seems to be what's screwing it up.
> 
> Is there a fix for this?
> It is crashing in the _copyConst function on this line:
> 
> length = VARSIZE(from->constvalue)
> 
> Thanks,
> Mark
> 
> ************
> 
> 


--  Bruce Momjian                        |  http://www.op.net/~candle pgman@candle.pha.pa.us               |  (610)
853-3000+  If your life is a hard drive,     |  830 Blythe Avenue +  Christ can be your backup.        |  Drexel Hill,
Pennsylvania19026

Re: [SQL] Postgres backend crash on alpha

From
Mark Volpe
Date:
Yup, it's fixed. 

Bruce Momjian wrote:
> 
> I would like you to try this on the current snapshot on our ftp server.
> I suspect it has been fixed, but if not, we would like to get it fixed
> because we are starting beta in a few days.
> 
> > The following sequence causes the backend
> > to crash:
> >
> > CREATE TABLE test1 (a text);
> > CREATE TABLE test2 (b text);
> >
> > CREATE RULE test_insert AS ON INSERT TO test1
> > DO INSTEAD INSERT INTO test2 VALUES (NEW.a);
> >
> > INSERT INTO test1 VALUES ('crash');
> >
> >
> > For some reason this only occurs on the alpha platform
> > (tried on alpha and linux).
> >
> > If I try this using ints it works fine, though. And the use
> > of "NEW" seems to be what's screwing it up.
> >
> > Is there a fix for this?
> > It is crashing in the _copyConst function on this line:
> >
> > length = VARSIZE(from->constvalue)
> >
> > Thanks,
> > Mark
> >
> > ************
> >
> >
> 
> --
>   Bruce Momjian                        |  http://www.op.net/~candle
>   pgman@candle.pha.pa.us               |  (610) 853-3000
>   +  If your life is a hard drive,     |  830 Blythe Avenue
>   +  Christ can be your backup.        |  Drexel Hill, Pennsylvania 19026
> 
> ************