Re: [tor-bugs] #18902 [Core Tor/Tor]: Avoid variable shadowing in Tor

["Tor Bug Tracker & Wiki" <blackhole@xxxxxxxxxxxxxx>]

#18902: Avoid variable shadowing in Tor
---------------------------+------------------------------
 Reporter:  teor           |          Owner:  cypherpunks
     Type:  defect         |         Status:  assigned
 Priority:  Medium         |      Milestone:  Tor: 0.2.???
Component:  Core Tor/Tor   |        Version:
 Severity:  Normal         |     Resolution:
 Keywords:  easy refactor  |  Actual Points:
Parent ID:                 |         Points:
 Reviewer:                 |        Sponsor:
---------------------------+------------------------------

Comment (by teor):

 Please be aware that we might take a long time to review, or reject, a
 patch that takes a lot of time to manually verify. It's too easy to
 introduce bugs this way.

 Why not try tools like coccinelle, or a scripting language?
 Most compilers will give you line numbers of shadowing and shadowed
 variables.

 One strategy could be to temporarily change outer and inner names, then
 check using a compiler.
 There is a risk that inner variables will accidentally be changed to the
 outer variable name, but that's the only risk I can see.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/18902#comment:6>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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