[postgis-tickets] [PostGIS] #3700: test_kmeans fails on winnie often on 32-bit and sometimes on 64-bit runs, and travis sometimes (was: test_kmeans fails on winnie often on 32-bit and sometimes on 64-bit runs)

[PostGIS]

#3700: test_kmeans fails on winnie often on 32-bit and sometimes on 64-bit runs,
and travis sometimes
----------------------+---------------------------
  Reporter:  robe     |      Owner:  robe
      Type:  defect   |     Status:  new
  Priority:  high     |  Milestone:  PostGIS 2.4.3
 Component:  postgis  |    Version:  2.3.x
Resolution:           |   Keywords:
----------------------+---------------------------

Comment (by robe):

 Yeh travis crashed on kmeans test as well recently (not just all in
 winnie's head something is fishy in these mean waters)

 https://travis-ci.org/postgis/postgis/jobs/322217076

 This was run against trunk r16189

 {{{
 PostGIS is now configured for x86_64-unknown-linux-gnu
  -------------- Compiler Info -------------
   C compiler:           gcc -O3 -march=native -mtune=native
   SQL preprocessor:     /usr/bin/cpp -traditional-cpp -w -P
  -------------- Additional Info -------------
   Interrupt Tests:   DISABLED use: --with-interrupt-tests to enable
  -------------- Dependencies --------------
   GEOS config:          /usr/bin/geos-config
   GEOS version:         3.5.0
   GDAL config:          /usr/bin/gdal-config
   GDAL version:         2.2.2
   SFCGAL config:        /usr/bin/sfcgal-config
   SFCGAL version:       1.2.2
   PostgreSQL config:    /usr/lib/postgresql/9.6/bin/pg_config
   PostgreSQL version:   PostgreSQL 9.6.6
   PROJ4 version:        49
   Libxml2 config:       /usr/bin/xml2-config
   Libxml2 version:      2.9.1
   JSON-C support:       yes
   protobuf-c support:   no
   PCRE support:         yes
   Perl:                 /usr/bin/perl
  --------------- Extensions ---------------
   PostGIS Raster:       enabled
   PostGIS Topology:     enabled
   SFCGAL support:       enabled
   Address Standardizer support:       enabled
  -------- Documentation Generation --------
   xsltproc:             /usr/bin/xsltproc
   xsl style sheets:     /usr/share/xml/docbook/stylesheet/docbook-xsl
   dblatex:              /usr/bin/dblatex
   convert:              /usr/bin/convert
   mathml2.dtd:          /usr/share/xml/schema/w3c/mathml/dtd/mathml2.dtd
 }}}


 {{{
 Test: test_kmeans ...make[2]: *** [check] Illegal instruction (core
 dumped)
 make[2]: Leaving directory
 `/home/travis/build/postgis/postgis/liblwgeom/cunit'
 make[1]: *** [check] Error 2
 make[1]: Leaving directory `/home/travis/build/postgis/postgis/liblwgeom'
 make: *** [check] Error 1
 }}}

--
Ticket URL: <https://trac.osgeo.org/postgis/ticket/3700#comment:16>
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