Re: [Vala] g_object_unref: assertion `G_IS_OBJECT (object)' failed

[Simon Werbeck <simon werbeck googlemail com>]

On 12/12/2012 03:54 PM, raum no-log org wrote:
> Hello,
>
> Could you have a look to this code :
> http://pastebin.com/cscSFCEP
>
> My file name is template5.vala (yes, I've tried 4 times but without any
> success :p)
> ---------------------------
> # valac --pkg gee-1.0 template5.vala
> # template5
> adding test2
> size: 1
> ++--> (null)
>
> (template5.exe:4756): GLib-GObject-CRITICAL **: g_object_unref: assertion
> `G_IS_OBJECT (object)' failed
>
> ---------------------------
>
> The main function have this code :
> cObject o1 = new cObject("test1");
> o1.add(new cObject("test2")); // I've written "name" variable in add
> method, so it shows "adding test2"... ooook
>
> stdout.printf ("size : %d\n", o1.size); // it prints "size: 1" so object
> "test2" has been added to o1... I think...
>
> cObject o2 = o1.get(0);
> stdout.printf ("++--> %s\n", o2.name); // it shows "null" and the
> assertion error
>
> Thanks
>
> Regards
>
> Raum
> _______________________________________________
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This is a bug in vala, see https://bugzilla.gnome.org/show_bug.cgi?id=597488

The workaround is to initialize your ArrayList in the constructor:

public cAbstractObject () {
    _objects = new ArrayList<G> ();
}