Wireshark-bugs: [Wireshark-bugs] [Bug 2812] Uninitialized variables (Lint Warning 603)

Date: Wed, 6 Jul 2011 02:18:15 -0700 (PDT)
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=2812

Graham Bloice <graham.bloice@xxxxxxxxxxxxx> changed:

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--- Comment #3 from Graham Bloice <graham.bloice@xxxxxxxxxxxxx> 2011-07-06 02:18:08 PDT ---
(In reply to comment #2)

> For packet-dnp.c, I don't know if a call to dnp3_al_get_timestamp() is the
> answer there or not in the case of AL_OBJ_BIC_RTIME, similar to the AL_OBJ_TD +
> AL_OBJ_TDCTO case.  Or quite possibly it's fine as it is since it's all wrapped
> in a for() loop going back to line 1390 and perhaps you'll never see a case of
> AL_OBJ_BIC_RTIME without a prior AL_OBJ_TD or AL_OBJ_TDCTO within this
> protocol?  If so, maybe just initializing al_cto to zero is good enough?
> Unfortunately, I don't know anything about dnp either to make a good enough
> determination for the best fix here. :(
> 

As per the protocol spec, you can't have an object with relative time without a
preceding common time object, as the time is relative to that.

However it's conceivable that a protocol implementation may get this wrong and
not provide a CTO, so we should then detect this with an Expert Info error. 
I'll look into this.

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