[geos-devel] [GEOS] #582: GEOSGetCentroid seg faults on certain MultiPolygons

[GEOS]

#582: GEOSGetCentroid seg faults on certain MultiPolygons
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 Reporter:  dazuma      |       Owner:  geos-devel@…              
     Type:  defect      |      Status:  new                       
 Priority:  major       |   Milestone:  3.3.5                     
Component:  Default     |     Version:  3.3.4                     
 Severity:  Unassigned  |    Keywords:                            
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 Consider the following MultiPolygon:

 MULTIPOLYGON(EMPTY, ((0 1, 1 1, 1 0, 0 0, 0 1)))

 I'm not completely clear on whether this should be considered a valid
 MultiPolygon. Most calls handle it fine. However, calling
 GEOSGetCentroid_r on it results in a segmentation fault.

 The seg fault seems to happen when the MultiPolygon contains at least one
 EMPTY polygon *and* at least one non-empty polygon. MultiPolygons
 containing only EMPTYs or only non-emptys work fine.

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Ticket URL: <http://trac.osgeo.org/geos/ticket/582>
GEOS <http://geos.refractions.net/>
GEOS (Geometry Engine - Open Source) is a C++ port of the Java Topology Suite (JTS).