[postgis-tickets] [PostGIS] #3718: Invalid edge (no two distinct vertices exist)

[PostGIS]

#3718: Invalid edge (no two distinct vertices exist)
-------------------------+-------------------------------------------------
  Reporter:  andehhh     |      Owner:  strk
      Type:              |     Status:  new
  enhancement            |
  Priority:  high        |  Milestone:  PostGIS 2.3.3
 Component:  topology    |    Version:  2.3.x
Resolution:              |   Keywords:  topology, tolerance, 0-length, edge
-------------------------+-------------------------------------------------

Comment (by strk):

 You had it *before*, but you didn't upgrade correctly yet so please do so
 before continuing with the debugging.

 A 0-length edge would be an error, yes. The toTopoGeom (and the lower
 level TopoGeo_addXXX) function should not allow entering such edges. You
 can enable debugging to see what's *generating* that 0-length edge, if
 it's not in input. Yes, the code should ideally handle this case
 internally and simply skip 0-length edges.

--
Ticket URL: <https://trac.osgeo.org/postgis/ticket/3718#comment:3>
PostGIS <http://trac.osgeo.org/postgis/>
The PostGIS Trac is used for bug, enhancement & task tracking, a user and developer wiki, and a view into the subversion code repository of PostGIS project.