| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Bernd Helmle <mailings(at)oopsware(dot)de> |
| Cc: | Stefan Kaltenbrunner <stefan(at)kaltenbrunner(dot)cc>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: planner crash/assert hit in 8.4B1 |
| Date: | 2009-04-19 15:26:18 |
| Message-ID: | 13604.1240154778@sss.pgh.pa.us |
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| Lists: | pgsql-hackers |
Bernd Helmle <mailings(at)oopsware(dot)de> writes:
> --On Sonntag, April 19, 2009 15:29:01 +0200 Stefan Kaltenbrunner
> <stefan(at)kaltenbrunner(dot)cc> wrote:
>> Program received signal SIGSEGV, Segmentation fault.
> Please note that it doesn't raise the Assert, it crashes because rel is
> NULL, hence the assertion expression crashes with a SIGSEGV. There seems to
> be something wrong with the RelOptInfo in estimate_num_groups().
It looks like I neglected to test this code while writing the
PlaceHolderVar patch --- it needs to handle those specially, and fails
to do so :-(. Thanks for the report!
regards, tom lane
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