[geos-devel] Crash when buffering a geometry

[Stephen Wong]

Hi Paul,
Thanks for the quick response. I just ran the test again (Windows Vista,
32-bit) and it doesn't get stuck on reading the WKB, so maybe it has to do
with cross-platform compatibility.  I took the WKB and converted it to hex,
so hopefully, it will work this time. I've attached it to the ticket (
http://trac.osgeo.org/geos/ticket/188). The file I/O operations in the .cpp
file now look like this:

std::ifstream fin ;
fin.open( "hex.ogc" ) ;
GeometryAPtr geom( reader_.readHEX( fin ) ) ;

Thanks,

Stephen

On Mon, Aug 11, 2008 at 11:42 AM, Paul Ramsey <pramsey at cleverelephant.ca>wrote:

> Stephen,
>
> When I integrate your code into my OS/X build and run the unit tests,
> I don't get as far as buffering...
>
> ---> group: geos::operation::BufferOp, test: test<1>
>     problem: unexpected exception
>     exception typeid: N4geos2io14ParseExceptionE
>     message: "ParseException: Unknown WKB type 0"
>
> Are you certain that WKB fragment is good?
>
> Paul
>
> On Fri, Aug 8, 2008 at 11:48 AM, Stephen Wong <swongu at gmail.com> wrote:
> > Hello,
> > I have found that when using BufferOp on a specific polygon, GEOS crashes
> > with an assertion failure.  This failure appears to be within
> > RightmostEdgeFinder, and I have documented it on a ticket
> > (http://trac.osgeo.org/geos/ticket/188). On that ticket, I have also
> > provided a .zip file that reproduces the error. The surprising this is
> that
> > the geometry is not complicated at all!
> > I have posted this problem in March
> > (see http://lists.osgeo.org/pipermail/geos-devel/2008-March/003324.html
> ),
> > but didn't get a response thus far; hopefully posting here will help.
> >  Thanks in advance.
> > Regards,
> > Stephen
> > _______________________________________________
> > geos-devel mailing list
> > geos-devel at lists.osgeo.org
> > http://lists.osgeo.org/mailman/listinfo/geos-devel
> >
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