[PostGIS] #6120: XX000: SQL/MM Spatial exception - curve not simple

PostGIS trac at osgeo.org
Thu Sep 3 11:02:42 PDT 2026


#6120: XX000: SQL/MM Spatial exception - curve not simple
--------------------------------+---------------------------
  Reporter:  Lars Aksel Opsahl  |      Owner:  strk
      Type:  defect             |     Status:  new
  Priority:  medium             |  Milestone:  PostGIS 3.6.5
 Component:  topology           |    Version:  3.6.x
Resolution:                     |   Keywords:  robustness
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Comment (by Sandro Santilli <strk@…>):

 In [changeset:"f0cdc854901ea6f02ec81dcb751f1355e3739af7/git"
 f0cdc854/git]:
 {{{#!CommitTicketReference repository="git"
 revision="f0cdc854901ea6f02ec81dcb751f1355e3739af7"
 Restore edge collapse handling in topology population function

 The topology code used lwgeom_make_valid to handle line collapses, but
 that function apparently changed semantic (see #6123 comment 2).

 Includes regress test

 References #6120 in 3.5 branch (3.5.8dev)
 }}}
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Ticket URL: <https://trac.osgeo.org/postgis/ticket/6120#comment:15>
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