[PostGIS] #5939: regress/core/coverage failure on latest geos

[PostGIS]

#5939: regress/core/coverage failure on latest geos
---------------------+--------------------------
 Reporter:  robe     |      Owner:  pramsey
     Type:  defect   |     Status:  new
 Priority:  medium   |  Milestone:  PostGIS GEOS
Component:  postgis  |    Version:  3.5.x
 Keywords:           |
---------------------+--------------------------
 Yah I know looks like wrong folder, I forgot to flip after 3.13, so issue
 is real at anyrate.
 Seems to have started a couple hours ago
 {{{

 16:23:01  -------------- Dependencies --------------
 16:23:01   GEOS config:
 /var/lib/jenkins/workspace/geos/rel-3.13w64/bin/geos-config
 16:23:01   GEOS version:         3.14.0dev (31400)
 16:23:01   GDAL config:
 /var/lib/jenkins/workspace/gdal/rel-3.10w64/bin/gdal-config
 16:23:01   GDAL version:         3.10.3dev (31003)
 16:23:01   SFCGAL config:        /usr/bin/sfcgal-config
 16:23:01   SFCGAL version:       1.3.8
 16:23:01   PostgreSQL config:
 /var/lib/jenkins/workspace/pg/rel/pg15w64/bin/pg_config
 16:23:01   PostgreSQL version:   PostgreSQL 15.13
 16:23:01   PROJ version:         7.2.1 (70201)
 16:23:01   Libxml2 config:       /usr/bin/xml2-config
 16:23:01   Libxml2 version:      2.9.14
 16:23:01   JSON-C support:       yes
 16:23:01   protobuf support:     yes
 16:23:01   protobuf-c version:   1003003
 16:23:01   PCRE support:         not found
 16:23:01   Perl:                 /usr/bin/perl

 16:28:07  regress/core/coverage .. failed (diff expected obtained:
 /var/lib/jenkins/workspace/postgis/tmp/3_6_pg15w64/test_123_diff)
 16:28:08
 -----------------------------------------------------------------------------
 16:28:08 --- ./regress/core/coverage_expected   2025-05-28
 06:12:08.308255786 +0000
 16:28:08 +++
 /var/lib/jenkins/workspace/postgis/tmp/3_6_pg15w64/test_123_out
 2025-07-08 20:28:08.064891860 +0000
 16:28:08 @@ -15,7 +15,7 @@
 16:28:08  three partition b|1|200
 16:28:08  three partition b|2|200
 16:28:08  three partition b|3|
 16:28:08 -union 2|2.05|ST_MultiPolygon
 16:28:08 +ERROR:  Error computing coverage union: TopologyException: side
 location conflict at 1 0. This can occur if the input geometry is invalid.
 16:28:08  union 3|2|ST_Polygon
 16:28:08  grid lanes|0|110000
 16:28:08  grid lanes|1|110000
 16:28:08
 -----------------------------------------------------------------------------
 16:28:08  regress/core/interrupt .. ok in 246 ms
 }}}
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Ticket URL: <https://trac.osgeo.org/postgis/ticket/5939>
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