[geos-devel] Crash when buffering a geometry

[Paul Ramsey]

In retrospect, the problem was (surprise!) between my ears. The unit
test harness runs in the context of a directory one lower than your
test case directory. When I copied the test data down into the
expected location, it ran, and failed.

So, consider your test case confirmed on OS/X. It be broken. Now I'll
try the patch.

P.

On Mon, Aug 11, 2008 at 1:41 PM, Stephen Wong <swongu at gmail.com> wrote:
> 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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>
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