[postgis-tickets] [PostGIS] #4721: SQL Error [XX000] with ST_AddEdgeModFace

[PostGIS]

#4721: SQL Error [XX000] with ST_AddEdgeModFace
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  Reporter:  jeromeu   |      Owner:  strk
      Type:  defect    |     Status:  new
  Priority:  critical  |  Milestone:  PostGIS 3.1.0
 Component:  topology  |    Version:  3.0.x
Resolution:            |   Keywords:  topology edge Error
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Comment (by strk):

 In presence of an invalid topology (ValidteTopology returns a number of
 errors, you say) any bet is off. What you could do to debug this is making
 a copy of the topology (CopyTopology) and then reduce the size of it
 incrementally while still being able to reproduce the issue. Then you
 could enable debugging (in liblwgeom/lwgeom_topo.c and
 topology/postgis_topology.c there are commented-out #define on top of the
 file).

 I'm interested in knowing if you have more info about this case.

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Ticket URL: <https://trac.osgeo.org/postgis/ticket/4721#comment:5>
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