[geos-devel] Re: [GEOS] #244: Buffer fails to buffer elements of multpolygon

GEOS geos-trac at osgeo.org
Fri May 8 09:52:23 EDT 2009

#244: Buffer fails to buffer elements of multpolygon
 Reporter:  pramsey     |        Owner:  geos-devel at lists.osgeo.org
     Type:  defect      |       Status:  new                       
 Priority:  major       |    Milestone:  3.1.1                     
Component:  Default     |      Version:  3.0.3                     
 Severity:  Unassigned  |   Resolution:                            
 Keywords:              |  
Comment (by strk):

 Confirmed, still a problem. From 52 polygons to 48. Input is found to be
 This is an ugly bug occasionally popping out in different situations.
 For example the geom in bug #219 also trigger a silent "eat-up" of a
 component (well, input is invalid in that case).

 Another case (giving more informations about how bad this bug is) is
 TestBufferExternal2.xml, which contain a test in which you get an EMPTY
 from a buffer operation depending on -ffloat-store. Check buildbot for the
 of this, or build w/out -ffloat-store on a 32bit system and run make

Ticket URL: <http://trac.osgeo.org/geos/ticket/244#comment:1>
GEOS <http://geos.refractions.net/>
GEOS (Geometry Engine - Open Source) is a C++ port of the Java Topology Suite (JTS).

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