[postgis-devel] [PostGIS] #241: ST_LineCrossingDirection Server Crash (Segfault)

[PostGIS]

#241: ST_LineCrossingDirection Server Crash (Segfault)
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  Reporter:  batzee    |       Owner:  robe         
      Type:  defect    |      Status:  assigned     
  Priority:  critical  |   Milestone:  postgis 1.4.1
 Component:  postgis   |     Version:  1.4.X        
Resolution:            |    Keywords:  segfault     
-----------------------+----------------------------------------------------
Changes (by robe):

  * owner:  pramsey => robe
  * status:  new => assigned

Comment:

 On closer inspection.  I think its how we are freeing constant geometries
 that is the problem. Only seems to happen if I introduce a constant.

 For example this crashes too.

 SELECT sum(ST_LineCrossingDirection(a.the_geom,
 ST_GeomFromText('LINESTRING(1 2,3 4)')))
 FROM ((SELECT ST_MakeLine(ST_Point(i,j),ST_Point(j,i))  As the_geom
                 FROM generate_series(-10,50,10) As i
                         CROSS JOIN generate_series(40,70, 15) As j
                         WHERE NOT(i = j)
                         ORDER BY i, i*j) ) As a

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Ticket URL: <http://trac.osgeo.org/postgis/ticket/241#comment:5>
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