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Re: Crash when calling custom methods in custom subclass.

Subject: Re: Crash when calling custom methods in custom subclass.
From: "John C. Randolph" <email@hidden>
Date: Sat, 30 Jul 2005 15:46:31 -0700
Delivered-to: email@hidden
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On Jul 30, 2005, at 12:01 PM, Adam Raney wrote:


Also taking your advice, my setters now utilize this format:

- (void) setContent: (NSString *)newContent
{
[_content release];
_content = [newContent copy];
}

Adam, I'm not sure whose advice you're referring to, but the setter above is a potential crasher. If newContent is the same object you've already got in _content, then when you release it, it may be destroyed immediately. If that happens, then [newContent copy] will crash your app, since you'll be trying to send a -copy message to a freed object.

Also, you shouldn't use leading underscores in your ivar names.

-jcr


John C. Randolph <email@hidden> (408) 914-0013
Roaming Cocoa Engineer,
Available for your projects at great Expense and Inconvenience.

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References:
	>Crash when calling custom methods in custom subclass. (From: Adam Raney <email@hidden>)
	>Re: Crash when calling custom methods in custom subclass. (From: Charilaos Skiadas <email@hidden>)
	>Re: Crash when calling custom methods in custom subclass. (From: Adam Raney <email@hidden>)
	>Re: Crash when calling custom methods in custom subclass. (From: Adam Raney <email@hidden>)

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