[postgis-devel] Backend crash with RC3 and RC4

[strk at refractions.net]

Well.. it was less dramatic then I tought.
Fix was two fold:
	- *wrong* box3d computation for COLLECTIONS
	- *missing* return value check from GEOMSTRY::BOX3D cast

Upgrading people will benefit from an addBBOX(dropBBOX(the_geom)) 
update of spatial tables. And a VACUUM ANALYZE afterwards...

I hope this won't require an RC5.... what about an RC4-2 win32
installer Mark ?

--strk;

On Wed, Mar 23, 2005 at 04:49:53PM +0100, strk at refractions.net wrote:
> The code is full of missing return check from the box3d computation.
> It is often assumed all geometries *can* have a bounding box cache,
> while this is not always the case ...
> 
> I'm working on it now. The bug is exploitable on every system.
> 
> BTW: I got rid of all references to LWGEOM_EXPLODED, which is
> 	both bogus and unused.
> 
> --strk;
> 
> On Wed, Mar 23, 2005 at 03:45:31PM -0000, Mark Cave-Ayland wrote:
> >  
> > 
> > > -----Original Message-----
> > > From: postgis-devel-bounces at postgis.refractions.net 
> > > [mailto:postgis-devel-bounces at postgis.refractions.net] On 
> > > Behalf Of strk at refractions.net
> > > Sent: 23 March 2005 15:24
> > > To: PostGIS Development Discussion
> > > Cc: Martin Daly
> > > Subject: Re: [postgis-devel] Backend crash with RC3 and RC4
> > > 
> > > 
> > > Mark, Martin,
> > > This seems to crash:
> > > 
> > > select box3d('GEOMETRYCOLLECTION(GEOMETRYCOLLECTION 
> > > EMPTY,POINT(10 10))'::geometry);
> > > 
> > > Can you confirm this ?
> > > 
> > > --strk;
> > 
> > 
> > Hi strk,
> > 
> > Yes, I can confirm it crashes here under Win32 RC4.
> > 
> > 
> > Kind regards,
> > 
> > Mark.
> > 
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