| From: | Teodor Sigaev <teodor(at)sigaev(dot)ru> |
|---|---|
| To: | Andrew Gierth <andrew(at)tao11(dot)riddles(dot)org(dot)uk> |
| Cc: | pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: Crash in gist insertion on pathological box data |
| Date: | 2009-04-02 18:12:26 |
| Message-ID: | 49D5000A.2090402@sigaev.ru |
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| Lists: | pgsql-hackers |
> The nature of the problem is this: if gist_box_picksplit doesn't find
> a good disposition on the first try, then it tries to split the data
> again based on the positions of the box centers. But there's a problem
> here with floating-point rounding; it's possible for the average of N
Look at the patch, it fixes the problem by comparing for equality by FPeq()
macros which is used everywhere in geometry calculation.
--
Teodor Sigaev E-mail: teodor(at)sigaev(dot)ru
WWW: http://www.sigaev.ru/
| Attachment | Content-Type | Size |
|---|---|---|
| gist.patch.gz | application/x-tar | 401 bytes |
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