I did some more digging and tracked down the offending subsystem. I
will contact the developer off line and hopefully this will be a simple fix.
Curt.
Curtis L. Olson wrote:
This problem affects 2d panels. With 2d panels you can have multiple
panel versions and switch between them with the 's' key.
Very recently FG has started generating a segfault whenever you type
's' to toggle to a minipanel.
This can be reproduced by starting FlightGear with
--aircraft=c172p-2dpanel
Once FlightGear is up and running, type 's' to switch to the mini
panel. FlightGear will immediate crash. (This was working fine up
until a week or two ago.)
The backtrace I get is:
#0 0x08435d2d in SGSubsystemGroup::Member::update (this=0xde5f2d8,
delta_time_sec=0.32500000000000001) at subsystem_mgr.cxx:236
#1 0x08435f80 in SGSubsystemGroup::update (this=0x979db9c,
delta_time_sec=0.32500000000000001) at stl_vector.h:462
#2 0x08435e56 in SGSubsystemMgr::update (this=0x979db94,
delta_time_sec=0.32500000000000001) at subsystem_mgr.cxx:297
#3 0x08051df2 in fgMainLoop () at main.cxx:495
#4 0xb7fccd20 in glutMainLoop () from /usr/lib/libglut.so.3
#5 0x08054a88 in fgMainInit (argc=2, argv=0xbf8f5bc4) at main.cxx:1007
#6 0x08050e50 in main (argc=2, argv=0xbf8f5bc4) at bootstrap.cxx:193
This indicates the crash is in simgear/structure/subsystem_mgr.cxx,
line #236:
void
SGSubsystemGroup::Member::update (double delta_time_sec)
{
elapsed_sec += delta_time_sec;
if (elapsed_sec >= min_step_sec) {
if (!subsystem->is_suspended()) {
subsystem->update(elapsed_sec);
elapsed_sec = 0;
}
}
}
The specific line of the crash is when the system checks if the
subsystem->is_suspended().
Does anyone have any ideas what may have changed recently to cause
this crash? This is a feature I use and need, I'm not just nitpicking
the random segfaults I see in FG.
Thanks,
Curt.
--
Curtis Olson http://www.flightgear.org/~curt
HumanFIRST Program http://www.humanfirst.umn.edu/
FlightGear Project http://www.flightgear.org
Unique text: 2f585eeea02e2c79d7b1d8c4963bae2d
_______________________________________________
Flightgear-devel mailing list
Flightgear-devel@flightgear.org
http://mail.flightgear.org/mailman/listinfo/flightgear-devel
2f585eeea02e2c79d7b1d8c4963bae2d
