[GRASS-dev] Segmentation fault (core dumped) when using r.mapcalc in GRASS 7.0
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? Best regards Paulo ___ grass-dev mailing list grass-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-dev
Re: [GRASS-dev] Segmentation fault (core dumped) when using r.mapcalc in GRASS 7.0
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. -- Glynn Clements ___ grass-dev mailing list grass-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-dev
Re: [GRASS-dev] Segmentation fault (core dumped) when using r.mapcalc in GRASS 7.0
On Sat, Aug 18, 2012 at 8:03 PM, Glynn Clements 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. Markus ___ grass-dev mailing list grass-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-dev
Re: [GRASS-dev] Segmentation fault (core dumped) when using r.mapcalc in GRASS 7.0
On Sun, Aug 19, 2012 at 10:03 AM, Markus Neteler wrote: > On Sat, Aug 18, 2012 at 8:03 PM, Glynn Clements >> This should be fixed in r52725. > > Paulo sent me the formula, I have tried it, fix confirmed, working now. Backported to 6.4 and 6.5 in r52726 and r52727. Markus ___ grass-dev mailing list grass-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-dev
Re: [GRASS-dev] Segmentation fault (core dumped) when using r.mapcalc in GRASS 7.0
Hi Markus I can also confirm it works in the in GRASS 7.0 r52727 Thanks a lot for this quick fix! Paulo On 08/19/2012 10:03 AM, Markus Neteler wrote: On Sat, Aug 18, 2012 at 8:03 PM, Glynn Clements 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. Markus ___ grass-dev mailing list grass-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-dev
