Re: [Playerstage-users] Program terminated w/ free() error

[Piotr T. <pio...@gm...>]

Dear developers,

Valgrind tool helped me with tracking similar problems in previous version
of playerv utility.

Best,

On Tue, Nov 24, 2009 at 11:00, Fred Labrosse <ff...@ab...> wrote:

> On Tuesday 24 November 2009 00:21:43 Tina Liang wrote:
> > Greetings,
> >
> > I am running the DP-SLAM algorithm that Markus Eich has ported to the
> >  Player interface a while ago.  (There was an email chain about this in
> >  March of 2009.)  I am using Player 3.0.0 and Stage 3.2.2 on Ubuntu 9.04.
> >
> > I just use the simle.cfg and simple.world files that come with the Stage
> > distribution (with no modifications), and the robot is moved by the "ctrl
> > wander" line.  I run player in one window and the DP-SLAM program in
> > another.  The DP-SLAM program runs the slam process as a separate thread.
> >
> > After running for a while (19 minutes or so in one case), the DP-SLAM
> > program aborts with this error:
> >     terminate called after throwing an instance of
> 'PlayerCc::PlayerError'
> > It always dies at this line:
> >     robot->Read();
> > robot is defined as:
> >     PlayerClient    *robot;
> >
> > A couple of times, player also died with this error:
> >     *** glibc detected *** player: free(): invalid next size (fast):
> > 0x0a416b00
> > It then gave a Backtrace and Memory map.  I have pasted the output below.
> >
> > One time, player did not die, but the robot stopped moving any way.
>
> I have loads of these too.  This is when using my own clients or playerv.
> This is however not systematic.  I haven't yet been able to establish what
> makes it do that.
>
> Fred
>
>
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-- 
Piotr Trojanek