Wireshark-dev: Re: [Wireshark-dev] dissector bug
From: "Jaap Keuter" <[email protected]>
Date: Mon, 31 Aug 2009 09:14:41 +0200
> While trying to add an item in the proto tree using the command
>
> proto_tree_add_item(xyz_tree, hf_xyz_event_stream_id, tvb, offset + 2, -1,
> FALSE);
>
> I am getting the following error:
>
> [Dissector bug, protocol XYZ: proto.c:3009: failed assertion
> "DISSECTOR_ASSERT_NOT_REACHED"]
>
> But strangely this is not the case with proto_tree_add_text (it is runing
> successfully). The field hf_xyz_event_stream is registerd with FT_DOUBLE.
> I
> have also tried it out with FT_UINT.
>
> what circumstances may cause this error ??
>
> Kindly explain
> --
> Regards

Hi,

when adding an item it must have a size matching the type you defined.
You've used -1, meaning until the end of the buffer. That is not a size
that matches the fieldtype, hence is not accepted.

Thanx,
Jaap
> Devlina
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