Wireshark-dev: Re: [Wireshark-dev] Displaying a variable in a Dissector Protocol Tree
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From: Guy Harris <guy@xxxxxxxxxxxx>
Date: Tue, 15 Jun 2010 14:02:45 -0700
On Jun 15, 2010, at 1:31 PM, eymanm wrote:

> proto_tree_add_int(wca_tree, hf_wca_label_2_number, tvb, offset, 4, 26);
> 
> When I run it, it troughs an exception: proto.c:2926: failed assertion "DISSECTOR_ASSERT_NOT_REACHED"
> 
> What's wrong?

What's probably wrong is that hf_wca_label_2_number probably doesn't have one of the types required by proto_tree_add_int():

> If you look in the declaration in proto.h, you find
> 
> /** Add one of FT_INT8, FT_INT16, FT_INT24 or FT_INT32 to a proto_tree.

If it's not one of those four types, and you're using proto_tree_add_int(), that's an error.

If it's an unsigned value, then

	1) its type must be one of FT_UINT8, FT_UINT16, FT_UINT24, or FT_UINT32

and

	2) you must use proto_tree_add_uint(), not proto_tree_add_int().