[postgis-users] st_isvalidreason crashes server

[Rolf de By]

All,

Working my way through a large batch of externally obtained polygon 
data, and attempting to repair topo errors like ring self-intersections, 
I ran into a server crash with the following query:

select *, st_isvalidreason(st_makepolygon(geom))
from tempgeo

tempgeo holds rings from original polygons as linestrings.  This query 
has worked me through 75% of the errrors, but crashes now on one.
I have discovered that the linestring on which this happens is just over 
64,000 points.  Is this a known limitation?

I am running on a PG 8.4.1 on a Windows Vista box,
postgis_full_version="POSTGIS="1.4.0" GEOS="3.1.1-CAPI-1.6.0" PROJ="Rel. 
4.6.1, 21 August 2008" USE_STATS"

regards,

Rolf

International Institute for Geo-Information Science and Earth Observation (ITC)
Chamber of Commerce: 410 27 560

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