Wireshark · Wireshark-dev: Re: [Wireshark-dev] Source, Destination, Protocol, Info columns values missing.

[Guy Harris <guy@xxxxxxxxxxxx>]

On Jun 9, 2006, at 8:11 PM, Ravi Kondamuru wrote:

> Thanks a lot. That was precisely the issue. I was setting all  
> columns and calling subdissector inside if (tree) {...}.
>
> Has this behavior changed between revisions 18189 of Ethereal and  
> 18418 of Wiretap? As explained in my original problem description,  
> the above code works in the ethereal code base.

Has the requirement that subdissectors be called regardless of  
whether "tree" is null or not changed?  No - that's been the case for  
a long time, and dissectors calling subdissectors only when "tree" is  
not null have had problems in Ethereal for a long time.

Was there a problem causing dissectors to be called with a non-null  
"tree" argument even when the protocol tree wasn't required, and was  
that problem fixed between revisions 18189 and 18418?  Possibly - I  
don't know, but I think some problems of that sort might have been  
fixed.