[PostGIS] #5804: NULL geometries generated from ST_FORCE3D(geom, NULL)

[PostGIS]

#5804: NULL geometries generated from ST_FORCE3D(geom,NULL)
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  Reporter:  ponceta  |      Owner:  pramsey
      Type:  defect   |     Status:  new
  Priority:  medium   |  Milestone:  PostGIS 3.4.4
 Component:  postgis  |    Version:  3.4.x
Resolution:           |   Keywords:  3D
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Comment (by pramsey):

 I can agree it's a bug, and almost certainly a result of leaning too hard
 on STRICT mode in the function definition.
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Ticket URL: <https://trac.osgeo.org/postgis/ticket/5804#comment:2>
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