[OSM-dev] Segmentation fault using Osmium

[Jochen Topf]

The Reinickendorf OSM file you posted works without any problems on my machine.
So maybe it is a problem with a specific library version or something. Please
tell us what OS you are using and the version numbers of all relevant
libraries.

Also I still don't understand what you said earlier: All worked fine before you
installed Postgresql/Postgis and only after you did that it didn't work any
more. That doesn't make any sense to me. Did I understand that correctly?

The segmentation fault doesn't happen in a place that has anything to do with
the multipolygons. Please try to compile osmium_toogr or osmium_toshape and run
them. They contain the same code which core dumps in your case in
osmium_mpdump, but without the multipolygon stuff. Maybe that helps with
narrowing down the problem.

Jochen

On Fri, Nov 23, 2012 at 07:35:48PM +0100, Konstantin Clemens wrote:
> Date: Fri, 23 Nov 2012 19:35:48 +0100
> From: Konstantin Clemens <konstantinclemens at googlemail.com>
> To: Jochen Topf <jochen at remote.org>
> Cc: dev at openstreetmap.org
> Subject: Re: Segmentation fault using Osmium
> 
> Hi,
> 
> sorry for the delay, I don't often get to play with the cool stuff :)
> 
> So at first It looked to me as you nailed it. I actually do run on a
> machine with limited memory (1GB only). So I decided to reduce the data
> size. I implemented a script that extracts from a OSM XML file only those
> nodes and ways that are referenced by a relation. Obviously I also extract
> Nodes that are referenced by ways. Attached is an example extract for
> Berlin-Reinickendorf (an administrative district of Berlin). That 12k data
> file leads to a segmentation fault as well. gdb backtrace also attached.
> 
> Is it the data?
> Did I break the data?
> Can anyone see if the attached reduced extract for Berlin-Reinickendorf is
> correct?
> What am I doing wrong?
> 
> Right now I'm playing with the Idea to assemble multi-polygons myself.
> Please help me to not do it and run into lots of issues that have been
> tackled already! (Although, probably, that is a great exercise...)
> 
> Cheers,
>   Konstantin
> 
> 
> On Tue, Nov 13, 2012 at 11:19 AM, Jochen Topf <jochen at remote.org> wrote:
> 
> > This looks like you simply run out of memory. Running osmium_mpdump on
> > Berlin
> > takes about 1.3 GByte of RAM. Do you have enought RAM?
> >
> > Jochen
> >
> > On Sun, Nov 11, 2012 at 01:30:05AM +0100, Konstantin Clemens wrote:
> > > Date: Sun, 11 Nov 2012 01:30:05 +0100
> > > From: Konstantin Clemens <konstantinclemens at googlemail.com>
> > > To: dev at openstreetmap.org
> > > Subject: Segmentation fault using Osmium
> > >
> > > Hi Folks!
> > >
> > > I am trying to derive multi polygons from OSM data. Jochen Topf
> > recommended
> > > me to use Osmium which did the job for me. Now next I wanted to store the
> > > generated in Posgresql/Postgis which I set up on the same virtual
> > machine.
> > > Now Postgress/Postgis work fine, but Osmium fails with a segmentation
> > fault.
> > >
> > > Attached is a gdb backtrace.
> > >
> > > Please talk with me as you would with a child. I am totally new to the
> > OSM
> > > world. Also I develop Java and Python rather then C and only understand
> > > what segmentation fault means....  :)
> > >
> > > Any help is appreciated,
> > > thanks
> > >
> > >   Konstantin
> >
> >
> >
> > --
> > Jochen Topf  jochen at remote.org  http://www.remote.org/jochen/
> > +49-721-388298
> >




-- 
Jochen Topf  jochen at remote.org  http://www.remote.org/jochen/  +49-721-388298