[gdal-dev] Cannot read overviews if VSI cache is on

[Even Rouault]

Le vendredi 26 juillet 2013 14:37:21, Even Rouault a écrit :
> Selon Radim Blazek <radim.blazek at gmail.com>:
> > GDAL 1.9.2 fails to read (large?) overview files if
> > 
> >     VSI_CACHE=TRUE
> >     VSI_CACHE_SIZE=1000000
> > 
> > The problem is described here: http://hub.qgis.org/issues/8356.
> > I just guess, that overview file keeps overview headers scattered over
> > the file and VSI fails to set offset, 17891712530 in this case, over
> > some limit.
> > 
> > Could it be some hardcoded limit in VSI subsystem? Or just int used
> > for offset instead of long? Is it easy to fix? Should I create a new
> > ticket?
> 
> Hi Radim,
> 
> yes, you likely spotted a bug in the VSI Cache mechanism. Please file a
> GDAL ticket.

I could indeed reproduce on a unit test on Linux 32 bit. I've created 
http://trac.osgeo.org/gdal/ticket/5170 and pushed the fix

Even

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