[postgis-devel] [PostGIS] #1775: False negative motion collision detection in ST_ChangeEdgeGeom

[PostGIS]

#1775: False negative motion collision detection in ST_ChangeEdgeGeom
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 Reporter:  strk      |       Owner:  strk         
     Type:  defect    |      Status:  new          
 Priority:  high      |   Milestone:  PostGIS 2.0.1
Component:  topology  |     Version:  2.0.x        
 Keywords:            |  
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Comment(by strk):

 Found the culprit: ST_SymDifference(EMPTY, POLY) returns EMPTY -- filed
 #1776 for this.
 Once that one is fixed this one should also be. We'll want a testcase for
 this anyway.

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Ticket URL: <http://trac.osgeo.org/postgis/ticket/1775#comment:4>
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