[postgis-devel] Issue 145 in postgis: POLYGON( EMPTY) is unparseable

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Status: New
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New issue 145 by lr1234567: POLYGON( EMPTY) is unparseable
http://code.google.com/p/postgis/issues/detail?id=145

What steps will reproduce the problem?
1. SELECT
ST_GeomFromText(ST_AsText(ST_Buffer(ST_GeomFromText('LINESTRING(-116.93414544665981
34.16033385105459,-116.87777514700957 34.10831080544884,-116.86972224705954
34.086748622072776,-116.9327074288116 34.08458099517253,-117.00216369088065
34.130329331330216,-117.00216369088065 34.130329331330216)', 4326), 0)))


What is the expected output? It should return some hex binary since
the buffer returns a POLYGON EMPTY

What do you see instead?
a) On 1.3.5 (GEOS 3.0.3 )-- gives error
ERROR:  parse error - invalid geometry
CONTEXT:  SQL function "st_geomfromtext" statement 1

b) On POSTGIS="1.4.0SVN" GEOS="3.1.0-CAPI-1.5.0" PROJ="Rel. 4.6.0, 21 Dec
2007" USE_STATS

gives error
ERROR:  parse error - invalid geometry
HINT:  "POLYGON( EMPTY" <-- parse error at position 14 within geometry

Note that:

SELECT ST_AsText(ST_Buffer(ST_GeomFromText('LINESTRING(-116.93414544665981
34.16033385105459,-116.87777514700957 34.10831080544884,-116.86972224705954
34.086748622072776,-116.9327074288116 34.08458099517253,-117.00216369088065
34.130329331330216,-117.00216369088065 34.130329331330216)', 4326), 0))

Yields: POLYGON( EMPTY)  (whats that space after the first paren for?
thought getting rid of the space doesn't help)

however:

SELECT ST_GeomFromText('POLYGON EMPTY') works fine.


Leo


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