Re: stringByReplacingCharactersInRange leading to bus error
Re: stringByReplacingCharactersInRange leading to bus error
- Subject: Re: stringByReplacingCharactersInRange leading to bus error
- From: "John C. Randolph" <email@hidden>
- Date: Wed, 18 Aug 2010 11:06:40 -0700
-stringByReplacingCharactersInString: creates and returns a new string, which is autoreleased. You're getting the bus errors when something tries to access that string after it's been released.
-jcr
On Aug 17, 2010, at 2:03 PM, James Miller wrote:
> Hello.
>
> I'm a little new to Objective-C / Cocoa so please don't shoot me, but I've been looking around for a few hours and can't seem to figure out what I'm doing wrong on my own and could use a second/third/fourth set of eyes.
>
> I have NSTimer that runs several times a second against an NSString called level, which is 190 characters long and previously initialized from:
>
> // NSString *level = [[NSString alloc]
> // initWithContentsOfFile:path
> // encoding:NSUTF8StringEncoding
> // error:&error];
>
>
> During the timer call, the level NSString is modified by the following line of code:
>
> level=[level stringByReplacingCharactersInRange:NSMakeRange(5,1) withString:@" "];
>
> This operation appears to succeed as I print it via NSLog and it looks fine and the length checks out, but the next time through the NSTimer I get a bus error and the application dies.
>
> If I comment out the line above, the code continues to run fine. Am I doing something wrong in terms of how I am using this method or assigning it back to the NSString?
>
>
> I appreciate the help!
>
> --Jim_______________________________________________
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