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Re: Memory leak in simple code?
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Re: Memory leak in simple code?


  • Subject: Re: Memory leak in simple code?
  • From: Shawn Erickson <email@hidden>
  • Date: Thu, 7 Apr 2005 10:37:31 -0700


On Apr 7, 2005, at 9:49 AM, Matt Neuburg wrote:

On Wed, 06 Apr 2005 23:45:07 -0500, Jason von Nieda <email@hidden>
said:
   // The next line is the one causing the leak. If I comment it out
the program does not leak and if I try to
   // release or autorelease "results" the program crashes.
   NSString *results = [NSString stringWithContentsOfURL:nsURL];

So don't do that. Do this:

NSString* results = [[NSString alloc] initWithContentsOfURL:nsURL];
[results release];

In other words, to avoid the messy unknowns of convenience constructors,
avoid convenience constructors.

Nothing is unknown about how they will function from the point of view of who owns responsibility for returned objects, it is clearly stated in the memory contract that the Cocoa framework follows.


Also it doesn't avoid the potential need to manage autorelease pools since who is to say what initWithContentsOfURL does internally that may end up putting objects on the current autorelease pool.

-Shawn

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      • From: Shawn Erickson <email@hidden>
References: 
 >Re: Memory leak in simple code? (From: Matt Neuburg <email@hidden>)

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