[postgis-tickets] [PostGIS] #4533: 3.0.0rc1 chaikin test failure on Ubuntu bionic/ppc64el

[PostGIS]

#4533: 3.0.0rc1 chaikin test failure on Ubuntu bionic/ppc64el
---------------------+---------------------------
 Reporter:  myon     |      Owner:  pramsey
     Type:  defect   |     Status:  new
 Priority:  medium   |  Milestone:  PostGIS 3.0.0
Component:  postgis  |    Version:  trunk
 Keywords:           |
---------------------+---------------------------
 On Ubuntu bionic, ppc64el only, there's a regression diff:

 {{{
 13:47:27 PostgreSQL 11.5 (Ubuntu 11.5-3.pgdg18.04+1) on powerpc64le-
 unknown-linux-gnu, compiled by gcc (Ubuntu 7.4.0-1ubuntu1~18.04.1) 7.4.0,
 64-bit
 13:47:27   Postgis 3.0.0rc1 - r17886 - 2019-10-08 09:53:04
 13:47:27   scripts 3.0.0rc1 r17886
 13:47:27   GEOS: 3.7.1-CAPI-1.11.1 27a5e771
 13:47:27   PROJ: Rel. 4.9.3, 15 August 2016

 13:47:46  chaikin .. failed (diff expected obtained:
 /tmp/pgis_reg/test_35_diff)
 13:47:46
 -----------------------------------------------------------------------------
 13:47:46 --- chaikin_expected   2019-10-08 06:18:28.000000000 +0000
 13:47:46 +++ /tmp/pgis_reg/test_35_out  2019-10-08 11:47:46.687220275
 +0000
 13:47:46 @@ -4,4 +4,4 @@
 13:47:46  4|LINESTRING(0 0,4.5 4.5,6 7,6 9,4.5 11.5,0 16)
 13:47:46  5|POINT(0 0)
 13:47:46  6|GEOMETRYCOLLECTION(POINT(1 1),LINESTRING(1 1,1 2.125,1 2.75,1
 3.25,1 3.875,1 5),POLYGON((5 5,5 7.8125,5.3125 9.0625,5.9375 9.6875,6.875
 10,8.125 10,9.0625 9.6875,9.6875 9.0625,10 8.125,10 6.875,9.6875
 5.9375,9.0625 5.3125,7.8125 5,5 5),(6 6,6 6.5625,6.0625 6.8125,6.1875
 6.9375,6.375 7,6.625 7,6.8125 6.9375,6.9375 6.8125,7 6.625,7 6.375,6.9375
 6.1875,6.8125 6.0625,6.5625 6,6 6)))
 13:47:46 -7|POLYGON((2 2,6 6,6 10,2 14,0 12,0 4,2 2))|BOX(0 2,6 14)
 13:47:46 +7|POLYGON((2 2,6 6,6 10,2 14,0 12,0 4,2 2))|BOX(-0 2,6 14)
 13:47:46
 -----------------------------------------------------------------------------
 }}}

 Other dists (except xenial, see #4532) and architectures are fine.

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Ticket URL: <https://trac.osgeo.org/postgis/ticket/4533>
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