[GRASS-dev] Segmentation fault (core dumped) when using r.mapcalc in GRASS 7.0

Markus Neteler neteler at osgeo.org
Sun Aug 19 01:03:42 PDT 2012

On Sat, Aug 18, 2012 at 8:03 PM, Glynn Clements
<glynn at gclements.plus.com> wrote:
> Paulo van Breugel wrote:
>> When using the graph operator in r.mapcalc and when using many points
>> (+500) to define the graph, I am getting a 'Segmentation fault (core
>> dumped)'. This is shown after the calculation has (apparently) finished.
>> >
>> 100%
>> Segmentation fault (core dumped)
>> GRASS 7.0.svn (latlon):~ >
>> It is difficult to really check whether the whole calculation has been
>> carried out correctly, but the new layer looks OK. I did notice that in the
>> meta data (r.info) of the new layer, only the statement 'generated by
>> r.mapcalc' is given, while normally the whole r.mapcalc statement would be
>> shown. Could that be related to the segmentation fault message?
> The expression is added to the history as a comment. The code which
> formats the expression had a fixed-sized buffer of 1024 arguments, so
> 512 or more x,y pairs would overflow it.
> This should be fixed in r52725.

Paulo sent me the formula, I have tried it, fix confirmed, working now.


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