[osg-users] Deleting still referenced object

[Voerman, L.]

Hi Richard,
I can't see how you can get a segfault on the line you indicate, so I guess
the node is somehow corrupted and the segfault is somewhere in the copyOp.
I can only guess at what might be going wrong there, but my first guess
would be the DEEP_COPY_USERDATA.
Laurens.

On Thu, Jan 17, 2019 at 8:13 AM Richard Harrison <rjh at zaretto.com> wrote:

> On 15/01/2019 09:03, Robert Osfield wrote:
>
> >> illustrated it well) and I'm currently flying one of my long test
> routes.
> > Fingers and toes crossed.
>
> ..and alas after 30h I've got a similar looking problem; the pattern is
> the same i.e. DatabasePager loading something whilst ObjectCache is
> expiring.
>
> This time it's a segfault in the DatabasePager during a copy of a model
> that has just been loaded (simgear, SGReaderWriterXML.cxx:342)
>
>          options->setDatabasePath(texturepath.local8BitStr());
>          osgDB::ReaderWriter::ReadResult modelResult;
>          modelResult = osgDB::readRefNodeFile(modelpath.local8BitStr(),
> options.get());
>          if (!modelResult.validNode())
>              throw sg_io_exception("Failed to load 3D model:" +
> modelResult.message(),
>                                    modelpath);
>  >       model = copyModel(modelResult.getNode());
>
> The object currently being expired in the ObjectCache doesn't seem to
> bear any relation to the model being loaded; one is a windsock and the
> other a radio tower.
>
> This is after I changed all of the osg::getSomething into
> osg::getRefSomething.
>
> I'm now a little confused as I was sure that the fix would work; I've
> kept the debug session open in case there is anything that I need to
> inspect.
>
>
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