id summary reporter owner description type status priority milestone component version severity resolution keywords cc 356 multilinestring buffer artifacts aperi2007 strk "Hi, In postgis try-ing a Buffer with this: select 1 as id, ST_Buffer(ST_GeomFromText('MULTILINESTRING( (1676339.95971128 4847443.67952346, 1676340.19 4847443.54, 1676338.44 4847440.65, 1676335.37 4847442.52, 1676337.12 4847445.4, 1676339.95971128 4847443.67952346) )'),1) as geom; I experience a Bug . The buffer build a Polygon with a strange secondary polygon near a vertex. The Geos used from Postgis 1.5.1 is Geos 3.2.0, so I try downloading the last Geos 3.2.2 compile and use it. But the bug is still here. I work with windows , postgis 1.5.1. " defect closed major 3.3.0 Default main Unassigned fixed