On Wed, 2002-01-23 at 07:52, Curtis L. Olson wrote:
> James Gallagher writes:
> > I get the following seg fault with the latest CVS version of FG (using
> > the latest CVS SimGear):
> >
> > [jimg@dcz FlightGear]$ src/Main/fgfs
> > FlightGear: Version 0.7.9
> >
> > Scanning for root: command line
> > Scanning for root: /home/jimg/.fgfsrc
> > fg_root = /usr/local/src/X11/fgfsbase
> > Segmentation fault (core dumped)
>
> Hmmm, this looks like you are dying in the property manager code some
> how. Do you have the latest cvs version of the base package? Perhaps
> a config file there got corrupted?
I double checked this. I have the latest fg base (from CVS).
>
> Another things worth trying is to rebuild simgear from scratch, "make clean;
> make", then install it, then "make clean; make" in the FlightGear tree.
Yup, I tried this too, with metakit 2.4.2 (both with and without Erik's
suggestion of removing the #define bool int (which on gcc won't be
defined, but just to be sure...).
It still crashes.
Stepping through the code in gdb/ddd I saw the following:
In
inline bool fgSetDouble (const string &name, double val)
{
return globals->get_props()->setDoubleValue(name, val);
}
The call to globals->get_props()->setDoubleValue(...) has stuff that
makes sense. But inside setDoubleValue the formal param relative_path is
null and that's where the seg fault comes from.
bool
SGPropertyNode::setDoubleValue (const string &relative_path, double
value)
{
return getNode(relative_path, true)->setDoubleValue(value);
}
I'm sort of swamped right now, so I haven't taken this any further.
Sorry. Maybe this will be enough of a clue for someone else on the list.
Oh, I was building from CVS just fine until at least late last week, so
whatever is causing this happened relatively recently.
James
>
> Regards,
>
> Curt.
>
>
> >
> >
> > I poked around with gdb/ddd. Here's the stack from the core file:
> >
> > #0 0x82e5204 in SGPropertyNode::getNode (this=0x0,
> > relative_path=@0xbffff2e0, create=true) at props.cxx:1290
> > #1 0x82e5c24 in SGPropertyNode::setDoubleValue (this=0x0,
> > relative_path=@0xbffff2e0, value=-110.6642444)
> > at props.cxx:1472
> > #2 0x8089d64 in fgSetDefaults () at fg_props.hxx:328
> > #3 0x80689d5 in fgInitConfig (argc=1, argv=0xbffff724) at
> > fg_init.cxx:219
> > #4 0x8059089 in mainLoop (argc=1, argv=0xbffff724) at main.cxx:1487
> > #5 0x805dd72 in main (argc=1, argv=0xbffff724) at main.cxx:1816
> > #6 0x4054b306 in __libc_start_main (main=0x805dd54 <main>, argc=1,
> > ubp_av=0xbffff724, init=0x804d4a4 <_init>,
> > fini=0x83a2a78 <_fini>, rtld_fini=0x4000d2dc <_dl_fini>,
> > stack_end=0xbffff71c)
> > at ../sysdeps/generic/libc-start.c:129
> >
> > I tried various things, like not using my ~/.fgfsrc file, et c. but I
> > still get the seg fault.
> >
> > Any one else see this?
> >
> > Thanks,
> > James
> >
> > --
> > __________________________________________________________________________
> > James Gallagher The Distributed Oceanographic Data System
> > [EMAIL PROTECTED]
> > http://unidata.ucar.edu/packages/dods
> > Voice: 775.337.8612 Fax: 775.337.2105
> >
> > _______________________________________________
> > Flightgear-devel mailing list
> > [EMAIL PROTECTED]
> > http://mail.flightgear.org/mailman/listinfo/flightgear-devel
>
> --
> Curtis Olson Intelligent Vehicles Lab FlightGear Project
> Twin Cities [EMAIL PROTECTED] [EMAIL PROTECTED]
> Minnesota http://www.menet.umn.edu/~curt http://www.flightgear.org
>
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--
__________________________________________________________________________
James Gallagher The Distributed Oceanographic Data System
[EMAIL PROTECTED]
http://unidata.ucar.edu/packages/dods
Voice: 775.337.8612 Fax: 775.337.2105
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