Re: accessing an object in a call-back

["dodji Seketeli" <dodji seketeli org>]

Hello,

Compile your code with -g, relaunch the program.
When it dumps core, do

gdb <your-program> <name-of-the-core-file> .

Then, in gdb, type 'bt'
(like backtrace).

You will get the stack trace of where the program crashed. That should help
you figure out what went wrong.

Oh, and if you don't have any core file on disk, try
ulimit -c unlimited

and re-try the whole process.

Cheers,

Dodji.
On 5/3/06, Millerand Fabien <millerf free fr> wrote:
> Hello,
>
> I have a problem in a callback:
>
> Button  b_start_stop->signal_clicked().connect(sigc::mem_fun(this,&
> FenetreEnregistrement::DemarrerEnregistrement));
>
> and in FenetreEnregistrement::DemarrerEnregistrement
>
> anytime I try to use a function of the button, I get a core dump,
> without any warning at the compilation:
>
> b_start_stop->set_label("another_label");
>
> -->give a core dump
>
> Can you help me?
>
> Am I allowed to change something on the button which called the
> callback? I don't understand...
>
>
> thks
>
> Fabien Millerand
>
>
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