Duplicate dissectors error

[Juan Jose Martin Carrascosa <juanjo () rti com>]

Hi everybody,

I am adding plugins to my Wireshark installation, so they register
themselves in the table rtps.type_name (created in packet-rtps.c).

Duplicate dissectors (null) and (null) for protocol Custom in dissector
table rtps.type_name
Duplicate dissectors (null) and (null) for protocol Custom_A in dissector
table rtps.type_name
Duplicate dissectors (null) and (null) for protocol Custom_A in dissector
table rtps.type_name
Duplicate dissectors (null) and (null) for protocol Custom_A in dissector
table rtps.type_name
Duplicate dissectors (null) and (null) for protocol (none) in dissector
table rtps.type_name

That error message comes from dissector_add_for_decode_as(). Actually, I
don't expect my dissectors to be called from decode_as...

Few things:

1) This message is printed to stderr instead of using any Logging API.
Should we change that?

2) Which is the right way to design this so I don't get those errors? I
could change the value DISSECTOR_TABLE_NOT_ALLOW_DUPLICATE
to DISSECTOR_TABLE_ALLOW_DUPLICATE when I create the rtps.type_name table
but I'd prefer to solve the issue instead of patching it.

Thanks,
Juanjo Martin

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