https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=5752
--- Comment #4 from Roland Knall <rknall@xxxxxxxxx> 2011-03-20 02:04:01 PDT ---
(In reply to comment #3)
> That's what the code in this patch is doing, so I'll check that patch in. The
> problem was that the openSAFETY dissector *wasn't* doing that; it was
> registering the dissector as a heuristic dissector for SERCOS III in the
> "register" routine, not in the "register handoff" routine - and that wouldn't
> even be guaranteed to work if all the dissectors were built-in; if it worked,
> it was by chance (or by alphabetical order).
The problem with that is, that if you add the heuristic dissector in openSAFETY
in the handoff routine, it still calls
... /src/epan/packet.c:1531:heur_dissector_add: assertion failed:
(sub_dissectors ! NULL)
because the sercosiii heuristic dissector hookup is not known.
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