[osg-users] segfault: osgDB::DatabasePager::FindCompileableGLObjectsVisitor::apply

Robert Osfield robert.osfield at gmail.com
Fri Sep 26 04:48:01 PDT 2008

Hi Melchoir,

The stack trace suggests that the texture object or the iterator is
corrupted or null for some reason.  At this stage of the game I
couldn't speculate on why this might be.  Testing on my linux system
with various paged databases and svn/trunk doesn't reveal any problems
so unfortunately I can't recreate your specific problem yet.

Have you tested flight gear before on your machine?  Is this crash a
new problem that has recently arisen?  Do you compile the OSG and
FlightGear from source?  Have others in the FligthGear community seen
similar problems?


On Fri, Sep 26, 2008 at 12:39 PM, Melchior FRANZ
<melchior.franz at gmail.com> wrote:
> As demanded by Robert, I repost an extended bug report that went
> to osg-submissions first. This segfault happened before Lionel's
> fix for that same function, and it still happens afterwards, using
> revision 8944:
>  OS:   Linux (i86/Intel P4/32bit)
>  gcc:  (SUSE Linux) 4.3.1 20080507
>  libc: 2.8 (20080425)
>  app:  FlightGear (cvs/head)
>  db:   no idea; maybe some other fgfs developer could explain that :-)
> The crash happens every few flightgear runs, without obvious pattern.
> See the attached gdb log for details. More gdb or other info on request.
> m.
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