[PostGIS] #5793: Crash on Buffer of Empty array

[PostGIS]

#5793: Crash on Buffer of Empty array
---------------------+---------------------------
 Reporter:  pramsey  |      Owner:  pramsey
     Type:  defect   |     Status:  new
 Priority:  medium   |  Milestone:  PostGIS 3.5.1
Component:  postgis  |    Version:  3.4.x
 Keywords:           |
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 {{{
 create extension postgis;

 create table tab (shape geography(GeometryZ,4326));

 select st_buffer(st_collect(array_agg (tab.shape)::geometry[])::geography,
 10.0) from tab;
 }}}
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Ticket URL: <https://trac.osgeo.org/postgis/ticket/5793>
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