[postgis-devel] [PostGIS] #1007: ST_IsValid() causes termination of server connection

[PostGIS]

#1007: ST_IsValid() causes termination of server connection
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 Reporter:  blaggner  |       Owner:  pramsey
     Type:  defect    |      Status:  new    
 Priority:  medium    |   Milestone:         
Component:  postgis   |     Version:  1.4.X  
 Keywords:            |  
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 I have a polygon (see attachment) which always causes the termination of
 my server connection when I am trying to test it with ST_IsValid().

 PostGIS:
 POSTGIS="1.5.2" GEOS="3.2.2-CAPI-1.6.2" PROJ="Rel. 4.7.1, 23 September
 2009" LIBXML="2.7.3" USE_STATS (procs from 1.5 r5385 need upgrade)

 PostgreSQL:
 PostgreSQL 8.4.5 on x86_64-unknown-linux-gnu, compiled by GCC gcc (SUSE
 Linux) 4.4.1 [gcc-4_4-branch revision 150839], 64-bit

 (translated :-) ) part of the pg_log error messages, related to this:

 SELECT: IndexedNestedRingTester.cpp:71: bool
 geos::operation::valid::IndexedNestedRingTester::isNonNested(): assertion
 »innerRingPt!=__null« not fulfilled.

 2011-06-07 13:21:14 CEST   LOG:  Server process (PID 13483) was terminated
 by signal 6: Aborted

 2011-06-07 13:21:14 CEST   LOG:  terminating any other active server
 processes

 2011-06-07 13:21:14 CEST gis laggner_b WARNING:  terminating connection
 because of crash of another server process

 2011-06-07 13:21:14 CEST gis laggner_b DETAIL:  The postmaster has
 commanded this server process to roll back the current transaction and
 exit, because another server process exited abnormally and possibly
 corrupted shared memory.

 2011-06-07 13:21:14 CEST gis laggner_b HINT:  In a moment you should be
 able to reconnect to the database and repeat your command.


 Additional comment from mike toews:

 With a recent SVN version of PostGIS on PG 8.4
 here is the moment before the crash:

 NOTICE:  [lwgeom.c:lwgeom_release:571] releasing type Polygon

 NOTICE:  [lwgeom.c:lwgeom_release:576] lwgeom_release: releasing bbox.

 0xa1f6b18********** Error **********

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Ticket URL: <http://trac.osgeo.org/postgis/ticket/1007>
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