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Re: BUG #5145: Complex query with lots of LEFT JOIN causes segfault

From: Stefan Kaltenbrunner <stefan(at)kaltenbrunner(dot)cc>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: "Bernt M(dot) Johnsen" <Bernt(dot)Johnsen(at)Sun(dot)COM>, Euler Taveira de Oliveira <euler(at)timbira(dot)com>, pgsql-bugs(at)postgresql(dot)org
Subject: Re: BUG #5145: Complex query with lots of LEFT JOIN causes segfault
Date: 2009-10-30 18:22:53
Message-ID: 4AEB2EFD.5020402@kaltenbrunner.cc (view raw or flat)
Thread:
Lists: pgsql-bugs
Stefan Kaltenbrunner wrote:
> Tom Lane wrote:
>> Stefan Kaltenbrunner <stefan(at)kaltenbrunner(dot)cc> writes:
>>> this is 8.5a2 configured with ./configure --enable-cassert 
>>> --enable-debug and  just default settings(ie plain initdb with 
>>> default settings).
>>> The OS is Debian Lenny/AMD64.
>>
>> Huh.  That should not be noticeably different from my F11/Xeon64
>> machine ... but I still can't make it crash.  Somebody else is gonna
>> have to debug this one.
> 
> hmm sorry - that was actually Lenny/i386 however I fail to reproduce 
> this on some of my other test boxes as well though I don't have an idea 
> why it crashes on my laptop(and for the original reporter) but not 
> elsewhere :(

ok I now see why you (and I) failed to reproduce the problem - it only 
causes clusters/databases to crash that were actually generated using 
the upthread mentioned script. it does NOT fail using a dump generated 
by a database that fails(!).
So the issue must be a bit more complex and somehow relate to some prior 
stuff the script does.


Stefan

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Next:From: Greg StarkDate: 2009-10-30 18:26:26
Subject: Re: BUG #5145: Complex query with lots of LEFT JOIN causes segfault
Previous:From: Alvaro HerreraDate: 2009-10-30 18:01:47
Subject: Re: BUG #5152: Exporting databases with pg_dump changes 'bigserial' to 'bigint'

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