[postgis-tickets] [PostGIS] #4709: Backend crash with TopoGeo_addLinestring against an invalid topology (2)

[PostGIS]

#4709: Backend crash with TopoGeo_addLinestring against an invalid topology (2)
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  Reporter:  strk      |      Owner:  strk
      Type:  defect    |     Status:  new
  Priority:  blocker   |  Milestone:
 Component:  topology  |    Version:  master
Resolution:            |   Keywords:
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Comment (by strk):

 Referencial integrity checks for edge linking are DEFERRED by default,
 which explains why it is possible to obtain such behavior:
 {{{
     "next_left_edge_exists" FOREIGN KEY (abs_next_left_edge) REFERENCES
 city_data.edge_data(edge_id) DEFERRABLE INITIALLY DEFERRED
     "next_right_edge_exists" FOREIGN KEY (abs_next_right_edge) REFERENCES
 city_data.edge_data(edge_id) DEFERRABLE INITIALLY DEFERRED
 }}}

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Ticket URL: <https://trac.osgeo.org/postgis/ticket/4709#comment:5>
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