[Flightgear-devel] SegFault

[Jon S. B. <js...@ha...>]

I got this when trying to run FlightGear before having set the FG_ROOT
environment variable:

============= console dump ===============

$
fgfs --fdm=jsb --airport-id=KEDW --offset-distance=25 --aircraft=x15 --altit
ude=50000 --uBody=1500 --wBody=100                FlightGear:  Version 0.7.8

Scanning for root: command line
fg_root = /FlightGear
Reading global preferences
Reading properties from /FlightGear/preferences.xml
Error reading property list from file /FlightGear/preferences.xml
Failed to read global preferences from /FlightGear/preferences.xml
Processing command line arguments
Opening a window: 800x600
GeForce2 MX/AGP/3DNOW!
Max texture size = 2048
Depth buffer bits = 16
WARNING: fntLoadTXF: Failed to open '/FlightGear/Fonts/typewriter.txf' for
reading.
NewAirportInit KEDW
      0 [main] fgfs 1072 open_stackdumpfile: Dumping stack trace to
fgfs.exe.stackdump

Segmentation fault (core dumped)

=========== end console dump =============

FGFS assumes (I think) that fg_root is at /FlightGear. However, if it is
not, but the user simply has forgotten to set the FG_ROOT environment
variable, I think a segfault can be avoided. I don't know how this is
supposed to be handled, but it should probably be handled by an informative
message rather than a segfault. Or perhaps I am all wrong ...
 ;-)

Jon