[GRASS-dev] [GRASS GIS] #2917: r.mapcalc neighbour modifier uses wrong row

[GRASS GIS]

#2917: r.mapcalc neighbour modifier uses wrong row
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  Reporter:  marisn       |      Owner:  grass-dev@…
      Type:  defect       |     Status:  new
  Priority:  blocker      |  Milestone:  7.0.4
 Component:  Raster       |    Version:  svn-releasebranch70
Resolution:               |   Keywords:  r.mapcalc
       CPU:  Unspecified  |   Platform:  Unspecified
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Comment (by marisn):

 I confirm based on the test case - issue is solved for 7.1.
 Now we have only a "small" problem - it has been present in all releases
 since 6.3.1 thus potentially compromising any computation based on it.

 1) It must be backported to 7.x and 6.x

 2) A clarification on potential impact should be provided to allow
 endusers to evaluate potentially affected results of any analysis
 performed with 6.3-7.0.

 Replying to [comment:1 glynn]:
 > Replying to [ticket:2917 marisn]:
 > > Seems that in some occasions r.mapcalc neighbour modifier is using
 values from wrong row.
 >
 > This appears to have been introduced in r34444 (Nov 2008), when the use
 of rowio was replaced with an internal cache.
 >
 > It should be fixed by r67851.

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Ticket URL: <https://trac.osgeo.org/grass/ticket/2917#comment:2>
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