[postgis-users] invalid geometry crashes postgres when trying to use buffer

[Christophe Diericx]

Hello everyone,

Issuing the following query (while trying to repair an invalid
geometry):

** select buffer(ST_GeomFromText('mypoly',32767),0)

crashes postgresql hard (extract from the postgresql error-log here:
http://paste.pocoo.org/show/155923/).

'mypoly' can be seen here: http://paste.pocoo.org/show/155921/.

32767 corresponds to the following proj4 string: "+proj=lcc
+lat_1=49.8333333333 +lat_2=51.1666666667 +lat_0=90 +lon_0=4.3569397222
+x_0=150000.01256 +y_0=5400088.4378 +ellps=intl
+towgs84=81,120,129,0,0,0,0 +units=m +no_defs"

Some more information about my setup:

-- select postgis_full_version()
"POSTGIS="1.3.5" GEOS="3.1.0-CAPI-1.5.0" PROJ="Rel. 4.6.0, 21 Dec 2007"
USE_STATS"
-- select version()
"PostgreSQL 8.3.7 on i486-pc-linux-gnu, compiled by GCC cc (GCC) 4.2.4
(Ubuntu 4.2.4-1ubuntu3)"

Is this a known issue and is this fixed in later builds?

Does anyone have an idea for a workaround with my current versions?

Thanks in advance for all reactions!

Christophe