[postgis-tickets] [PostGIS] #2191: PostGIS Segfault with "GEOMETRYCOLLECTION EMPTY"

[PostGIS]

#2191: PostGIS Segfault with "GEOMETRYCOLLECTION EMPTY"
---------------------------+------------------------------------------------
 Reporter:  dkleinealbers  |       Owner:  pramsey      
     Type:  defect         |      Status:  new          
 Priority:  medium         |   Milestone:  PostGIS 1.5.9
Component:  postgis        |     Version:  1.5.X        
 Keywords:                 |  
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 The following query leads to a segfault in PostGIS (using 1.5.8 on
 Postgres 9.1):
 SELECT box(Envelope(Transform(GeomFromText('GEOMETRYCOLLECTION
 EMPTY',4326),4326)));

 The stacktrace of the core dump is as follows:
 (gdb) bt
 #0 0x00007f303e80edf0 in box3d_to_box_p () from
 /usr/lib/postgresql/9.1/lib/postgis-1.5.so
 #1 0x00007f303e808e2b in LWGEOM_to_BOX () from
 /usr/lib/postgresql/9.1/lib/postgis-1.5.so
 #2 0x0000000000576505 in ?? ()
 #3 0x0000000000577508 in ExecEvalExprSwitchContext ()
 #4 0x00000000005e983d in ?? ()
 #5 0x00000000005eb455 in ?? ()
 #6 0x00000000005ebfef in ?? ()
 #7 0x00000000005a527b in expression_tree_mutator ()
 #8 0x00000000005ebda4 in ?? ()
 #9 0x00000000005a58ea in expression_tree_mutator ()
 #10 0x00000000005ebda4 in ?? ()
 #11 0x00000000005ed7df in eval_const_expressions ()
 #12 0x00000000005dc78d in ?? ()
 #13 0x00000000005df528 in subquery_planner ()
 #14 0x00000000005dfa09 in standard_planner ()
 #15 0x000000000064036e in pg_plan_query ()
 #16 0x0000000000640454 in pg_plan_queries ()
 #17 0x00000000006422b2 in PostgresMain ()
 #18 0x0000000000603203 in ?? ()
 #19 0x0000000000603c71 in PostmasterMain ()
 #20 0x000000000045a4e0 in main ()

 The error is perfectly reproducible on multiple machines. Please let me
 know if you need any further information.

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Ticket URL: <http://trac.osgeo.org/postgis/ticket/2191>
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