[Crash-utility] [PATCH 2/2] dis: Report duplicate symbols

[Dave Anderson]

Hi Aaron,

I was revisiting your v1 patch, and realized that the duplicate symbol check
also needs to apply to the "can_eval()" section as well, because a user could
enter "dis symbol+<offset>".  

So I extracted your do-while loop into a discrete function, and beefed it
up to handle the entry of symbols with multiple text and data symbols, as
well as some other possibilities.  In so doing, things got a bit murkier 
than your original patch.  I've attached what I've come up with so far.
Tell me what you think.

Thanks,
  Dave


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