Re: [Bug-gnubg] Another crash report....

[Nardy Pillards]

----- Original Message -----
From: "Gary Wong" <address@hidden>
To: "bug-gnubg" <address@hidden>
Sent: Thursday, December 19, 2002 5:45 PM
Subject: Re: [Bug-gnubg] Another crash report....


> On Mon, Dec 16, 2002 at 06:19:09PM +0000, Joern Thyssen wrote:
> > Using gtk_object_get_data seems to do the trick, but I would really like
> > to know why it suddenly stopped working.
>
> Found it!!!
>
> It was a nasty bug in GTK's gtkobject.c.  gtk_object_get_user_data()
> was calling a lower-level function and passing in a statically
> allocated quark (i.e. hash) of the string "user_data".  Unfortunately,
> that quark was initialised only by gtk_object_set_user_data(), so if
> all code uses gtk_object_set_data_full() or some other function, then
> the quark will never be set, and gtk_object_get_user_data() won't be
> able to find the data.  (I've only found this bug in the source of
> GTK+ 2.0.3, but presumably something similar is going on in 1.2/1.3 as
> well.  I've reported it to the GTK+ people, so hopefully it will be
> fixed one day...)
>
> The code only ever managed to work in the past because the old
> rendering code used gtk_object_set_user_data() on the widgets showing
> the chequers next to the player names under the board.  When the new
> rendering code eliminated that call, the GTK+ bug was triggered.
>
> I know nobody cares, but it's reassuring to me that after days of
> searching, there was no deep, subtle and mysterious memory corruption
> bug in render.c.  (At least, not that we've found!)
>
> Cheers,
> Gary.

My name ain't Nobody, but I do care ;-)

The Win32 build (021219) will be available in 15 mins.
And it doesn't crash anymore when changing settings !! (big smile here)
(big thank you)

Nardy