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Re: Static Analyzer and Core Foundation
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Re: Static Analyzer and Core Foundation


  • Subject: Re: Static Analyzer and Core Foundation
  • From: Luke the Hiesterman <email@hidden>
  • Date: Fri, 18 Sep 2009 16:44:42 -0700

There's not enough code here to give a good answer to question 1.

Luke

On Sep 18, 2009, at 4:39 PM, Steve Cronin wrote:

Luke;

OK thank-you for that answer to question 2!
Any thoughts on question 1?

Steve

On Sep 18, 2009, at 6:36 PM, Luke the Hiesterman wrote:

Line 44 creates 2 objects, one goes into the dictRef, the other is not assigned to a variable, but is used only as the second argument to MDItemCopyAttributes. The object that you create inside that call is never released.

Luke

On Sep 18, 2009, at 4:33 PM, Steve Cronin wrote:

Folks;

Alert - potential boneheaded-ness lies ahead - please be gentle.

I'll be the first to admit that I'm much happier in ObjC than C…

I thought I would try static analysis and see what turned up.
On the whole I must say I'm pleased but this one has me questioning my basic understanding


if (![[NSFileManager defaultManager] fileExistsAtPath:thisPath]) {
…
41 } else {
42 MDItemRef mdi = MDItemCreate( nil, (CFStringRef)thisPath );
43 if ( mdi != nil ) {
44 CFDictionaryRef dictRef = MDItemCopyAttributes( mdi, MDItemCopyAttributeNames(mdi));
…
CFRelease(dictRef);
} else {
… handle error
}
}


Static Analysis tells me I have a potential leak of object allocated on line 44 -- that's all.

My questions are:
1) Why is there not a warning for the object allocated on line 42 - mdi ?
2) Why is the CFRelease(dictRef) not sufficient?


Thank you for you patience!
Steve_______________________________________________

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  • Follow-Ups:
    • Re: Static Analyzer and Core Foundation
      • From: Steve Cronin <email@hidden>
References: 
 >Static Analyzer and Core Foundation (From: Steve Cronin <email@hidden>)
 >Re: Static Analyzer and Core Foundation (From: Luke the Hiesterman <email@hidden>)
 >Re: Static Analyzer and Core Foundation (From: Steve Cronin <email@hidden>)

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