[postgis-devel] Segfault with Intersects() in 1.0.6-CVS

[Alex Mayrhofer]

Benj Carson wrote:
> Hello,
> 
> I am getting segfaults with PostGIS 1.0.6-CVS (updated as of 2005-12-02) and 
> PostgreSQL 8.1 (from Debian) when calling Intersects():
> 
> # select intersects(
>     polygonfromtext('POLYGON((0.0 0.0,1.0 0.0,1.0 1.0,1.0 0.0,0.0 0.0))'),
>     polygonfromtext('POLYGON((0.0 2.0,1.0 2.0,1.0 3.0,0.0 3.0,0.0 2.0))')
>   );

works for me on

  POSTGIS="1.0.6CVS" GEOS="2.1.1" PROJ="Rel. 4.4.9, 29 Oct 2004" USE_STATS 
DBPROC="0.3.0" RELPROC="0.3.0"

PostgreSQL 8.1 on a Ultrasparc machine running Debian/GNU Linux. I know that 
this is an old GEOS version, however.

May i suggest that we add regression tests for each "problematic" query to 
the distribution, probably with a reference to the respective mail archive 
thread, like in this case:

--- postgis-devel/2005-December/001784.html
select intersects(
    polygonfromtext('POLYGON((0.0 0.0,1.0 0.0,1.0 1.0,1.0 0.0,0.0 0.0))'),
    polygonfromtext('POLYGON((0.0 2.0,1.0 2.0,1.0 3.0,0.0 3.0,0.0 2.0))')
);

using the mailing list archive as a reference. I think the more tests we 
have, the better (i'm working with another project where we have now around 
2300 regression tests, and they have proved to be really useful, even if 
they look trivial in the first place).

cheers

alex