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static analyzer
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static analyzer


  • Subject: static analyzer
  • From: Matt Neuburg <email@hidden>
  • Date: Wed, 07 Jul 2010 11:33:02 -0700
  • Thread-topic: static analyzer

On or about 7/7/10 11:17 AM, thus spake "Bill Bumgarner" <email@hidden>:

> I missed the OP's post....
>
> If the static analyzer is barfing up a false positive, please report it
> (http://bugreport.apple.com/ works fine).

Is that generally true? I mean, first of all, false positives are a
well-known phenomenon with this static analyzer (the Web page at llvm.org
talks about this). Second, they do no harm. I get a false positive in *any*
of my apps that uses NSURLConnection, for example:

NSURLConnection* con = [[NSURLConnection alloc] initWithRequest:req
delegate:self];

That triggers a "potential leak" warning. Well, of course it is a
*potential* leak. But it isn't a *real* leak, because I happen to know that
I'm going to release this object in either connection:didFailWithError: or
connectionDidFinishLoading:. (My code and memory management come right out
of Apple's own examples here.) I know how NSURLConnections work; the static
analyzer doesn't. But I would hardly call that a bug.

m.

--
matt neuburg, phd = email@hidden, http://www.tidbits.com/matt/
pantes anthropoi tou eidenai oregontai phusei
Among the 2007 MacTech Top 25, http://tinyurl.com/2rh4pf
AppleScript: the Definitive Guide, 2nd edition
http://www.tidbits.com/matt/default.html#applescriptthings
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TidBITS, Mac news and reviews since 1990, http://www.tidbits.com



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References: 
 >Re: Pass-by value? warning (was: NSTextField fieldeditor subclass example? (and an unrelated other inquiry)) (From: Bill Bumgarner <email@hidden>)

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