[postgis-users] Infinite loop in st_intersects - because of incorrect data out of st_transform?

[Paul Ramsey]

Like so?

http://trac.osgeo.org/postgis/attachment/ticket/987/inf2.patch

On Thu, May 26, 2011 at 11:35 AM, Paul Ramsey <pramsey at opengeo.org> wrote:
> I think I'd like to do option (b), leave in the deep check for Inf and
> put upper level checks for Inf in the IsValid* calls. I've put all the
> above code in checks for GEOS_VERSION < 33 so that it'll go dark as we
> move forward. Sound OK?
>
> p.
>
> On Thu, May 26, 2011 at 10:42 AM, Sandro Santilli <strk at keybit.net> wrote:
>> On Thu, May 26, 2011 at 07:26:25PM +0200, Sandro Santilli wrote:
>>> On Thu, May 26, 2011 at 09:51:12AM -0700, Paul Ramsey wrote:
>>> > On Thu, May 26, 2011 at 9:44 AM, Sandro Santilli <strk at keybit.net> wrote:
>>> > > On Thu, May 26, 2011 at 09:26:15AM -0700, Paul Ramsey wrote:
>>> > > > Erm, do old versions of IsValid still catch Inf geometries safely?
>>> > >
>>> > > If you have an HEXWKB I can give it a quick try against 3.1.0
>>> >
>>> > 0103000020E61000000100000005000000737979F3DDCC2CC0F92154F9E7534540000000000000F07F000000000000F07F8F806E993F7E55C0304B29FFEA8554400634E8D1DD424540B5FEE6A37FCD4540737979F3DDCC2CC0F92154F9E7534540
>>>
>>> 3.1.0 was unsupported.
>>> 3.1.2 entered the infinite loop on ST_IsValid.
>>
>> 3.2.3 is good:
>>
>> POSTGIS="2.0.0SVN" GEOS="3.2.3-CAPI-1.6.3" PROJ="Rel. 4.7.1, 23 September 2009" LIBXML="2.7.6" USE_STATS
>> strk=# select st_isvalid('0103000020E61000000100000005000000737979F3DDCC2CC0F92154F9E7534540000000000000F07F000000000000F07F8F806E993F7E55C0304B29FFEA8554400634E8D1DD424540B5FEE6A37FCD4540737979F3DDCC2CC0F92154F9E7534540'::geometry);       NOTICE:  Invalid Coordinate at or near point inf inf
>> f
>>
>> --strk;
>>
>>  ()   Free GIS & Flash consultant/developer
>>  /\   http://strk.keybit.net/services.html
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>