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

[PostGIS]

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

 I can just add that I tried the above with two identical rows in the table
 like
 {{{
 create table c as
 SELECT ST_MakeLine(ST_Point(-10,40),ST_Point(40,-10)) As the_geom ;
 insert into c
 SELECT ST_MakeLine(ST_Point(-10,40),ST_Point(40,-10)) As the_geom ;
 }}}

 with the same result.
 it doesn't crash with:

 {{{
 SELECT
 sum(ST_LineCrossingDirection(the_geom, ST_GeomFromText('LINESTRING(1 2,3
 4)')))
 FROM  (select * from c limit 1) d;
 }}}
 but it crashes with:
 {{{
 SELECT
 sum(ST_LineCrossingDirection(the_geom, ST_GeomFromText('LINESTRING(1 2,3
 4)')))
 FROM  c;
 }}}
 and:
 {{{
 SELECT
 sum(ST_LineCrossingDirection(the_geom, ST_GeomFromText('LINESTRING(1 2,3
 4)')))
 FROM  c limit 1;
 }}}


 /Nicklas

-- 
Ticket URL: <http://trac.osgeo.org/postgis/ticket/241#comment:9>
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