Re: Unresolved error 0xC0000409 on Windows Server - Mailing list pgsql-hackers

From Matthew Gerber
Subject Re: Unresolved error 0xC0000409 on Windows Server
Date
Msg-id CAOcpbfoAceM0FKCRKY=SghRRsWUKnGkVj+9OB55NUMLqmB_-eQ@mail.gmail.com
Whole thread Raw
In response to Re: Unresolved error 0xC0000409 on Windows Server  (Noah Misch <noah@leadboat.com>)
Responses Re: Unresolved error 0xC0000409 on Windows Server  (Tom Lane <tgl@sss.pgh.pa.us>)
Re: Unresolved error 0xC0000409 on Windows Server  (Noah Misch <noah@leadboat.com>)
List pgsql-hackers


On Sun, Nov 11, 2012 at 12:23 AM, Noah Misch <noah@leadboat.com> wrote:
On Sun, Nov 04, 2012 at 02:30:38PM -0500, Tom Lane wrote:
> Matthew Gerber <gerber.matthew@gmail.com> writes:
> >> Here is the command that was executing when the 0xC0000409 exception was
> >> raised:
> >> INSERT INTO places (bounding_box,country,full_name,id,name,type,url)
> >> VALUES
> >> (st_transform_null(ST_GeometryFromText('POLYGON((-97.034085
> >> 32.771786,-97.034085 32.953966,-96.888789 32.953966,-96.888789
> >> 32.771786,-97.034085 32.771786))',4326),26918),'United States','Irving,
> >> TX','dce44ec49eb788f5','Irving','city','
> >> http://api.twitter.com/1/geo/id/dce44ec49eb788f5.json'),
>
> Assuming that 0xC0000409 does actually represent a stack-overrun
> condition,

It signifies scribbling past the end of the frame's local variables:
http://msdn.microsoft.com/en-us/library/8dbf701c.aspx

A slight update on this:  previously, my insert code involved a long "SELECT ... UNION ALL ... SELECT ... UNION ALL ..." command. If this command was too long, I would get a stack depth exception thrown back to my client application. I reduced the length of the command to eliminate the client-side exceptions, but on some occasions I would still get the 0xC0000409 crash on the server side. I have eliminated the long "SELECT ... UNION ALL ... " command, and I now get no errors on either side. So it seems like long commands like this were actually causing the server-side crashes. The proper behavior would seem to be throwing the exception back to the client application instead of crashing the server.

Hope this helps...

Matt

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