Re: [PlayerStage-Gazebo] Re: Gazebo Seg Fault

[ahoward <ah...@us...>]

You're running this on an OS X box, right?  I just built and ran CVS =
HEAD
on my Apple Powerbook without any problems, and checked that Gazebo i=
s
valgrind-clean on my Linux box.  Looking at the backtrace below, the
arguments to the ErrorPrint() function looks suspicious (bad stack). =
 A
different version of gcc, perhaps?

At this point I can only suggest a divide-and-conquer strategy.  Add =
your
own instrumentation to main.cc::PreInit(), for example, or comment ou=
t the
lines that set the signal handler.

=09A.



On Sun, 17 Oct 2004, Benjamin Raskob wrote:

> Hi again,
> I tried a fresh checkout this morning, and still get the same thing=
. My
> .gazebo file is empty, but here's my backtrace.
>
> Looks like gazebo isn't getting started at all, it's failing on pri=
nting
> out the title and version number.I'm not sure what mtrace.c is, or =
where
> that fits in.
>
> Thanks,
> Ben
>
> Starting program: /usr/local/bin/gazebo
> /usr/local/share/gazebo/worlds/example1.world
> [New Thread 16384 (LWP 23100)]
> *** Gazebo 0.5.0 ***
>
> Program received signal SIGSEGV, Segmentation fault.
> [Switching to Thread 16384 (LWP 23100)]
> 0x0f4ea410 in strlen () at mtrace.c:200
> 200     mtrace.c: No such file or directory.
>         in mtrace.c
> (gdb) bt
> #0  0x0f4ea410 in strlen () at mtrace.c:200
> #1  0x0f4b6a20 in _IO_vfprintf (s=3D0x100abbc0,
>     format=3D0x6 <Address 0x6 out of bounds>, ap=3D0x7ffff590) at
> vfprintf.c:1528
> #2  0x100088f4 in ErrorPrint(int, int, char const*, int, char const=
*,
> ...) (
>     msgType=3D269156352, level=3D32, file=3D0x0, line=3D257632344,
>     fmt=3D0x7fffef70 "\177=FF=F5 \017KFP0\002Od") at Error.cc:47
> #3  0x10003d94 in PreInit(int*, char**) (argc=3D0x100abbc0,
> argv=3D0x7ffff664)
>     at main.cc:178
> #4  0x10004298 in main (argc=3D805457764, argv=3D0x7ffff664) at mai=
n.cc:317
> #5  0x0f48404c in __libc_start_main (argc=3D269138880, ubp_av=3D0x7=
ffff664,
>     ubp_ev=3D0x0, auxvec=3D0x7ffff710, rtld_fini=3D0x100b0000,
> stinfo=3D0x100b0000,
>     stack_on_entry=3D0x20) at ../sysdeps/powerpc/elf/libc-start.c:1=
78
> (gdb)
>
>
>
>
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Andrew Howard                           email: ah...@po...
Department of Computer Science          http:  www-robotics.usc.edu/~=
ahoward
University of Southern California       phone: 1 (213) 740 6416
Los Angeles, CA, U.S.A. 90089-0781      fax:   1 (213) 821 5696
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