[postgis-devel] [PostGIS] #1799: Passing zero as max_length to ST_Segmentize() causes crash

[PostGIS]

#1799: Passing zero as max_length to ST_Segmentize() causes crash
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 Reporter:  skwash   |       Owner:  pramsey      
     Type:  defect   |      Status:  new          
 Priority:  medium   |   Milestone:  PostGIS 2.0.1
Component:  postgis  |     Version:  2.0.x        
 Keywords:           |  
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 Running something like the following causes server process to max out the
 CPU and seems to require a kill -9 to stop the process (crashing postgres
 entirely).

 {{{
 SELECT ST_Segmentize(ST_MakeLine(ST_MakePoint(0,0), ST_MakePoint(1,1)),
 0);
 }}}

 It doesn't really make sense to pass zero, but I'm sure someone else at
 some point will try it with worse results than what I caused myself today.
 ;)  A simple param validation to catch this would probably be useful to
 ensure idiots (like me!) don't do this on accident.

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Ticket URL: <http://trac.osgeo.org/postgis/ticket/1799>
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