Re: NSScanner Failing with EXC_BAD_ACCESS
Re: NSScanner Failing with EXC_BAD_ACCESS
- Subject: Re: NSScanner Failing with EXC_BAD_ACCESS
- From: Chris Tracewell <email@hidden>
- Date: Fri, 15 Oct 2010 18:07:45 -0700
Thanks all. I got it working, indeed the Scanner was failing, which as Kiel suggested, must have led to an invalid pointer by the time I tried to log/return it. Once I checked the BOOL it quit crashing and then with some reworking of my NSScanner code it processed and returned the string I wanted.
Thanks again for the help.
--chris
On Oct 15, 2010, at 12:08 PM, Kiel Gillard wrote:
> http://developer.apple.com/library/ios/documentation/cocoa/reference/foundation/Classes/NSScanner_Class/Reference/Reference.html#//apple_ref/occ/instm/NSScanner/scanCharactersFromSet:intoString:
>
> You pass by reference to the - [NSScanner scanCharactersFromSet:intoString:] method an uninitialised pointer to a NSString object.
>
> Consider the return value of the - [NSScanner scanCharactersFromSet:intoString:] method. If the method fails to scan the given characters and returns NO, your theScannedString pointer is probably still invalid.
>
> Kiel
>
> On 16/10/2010, at 5:44 AM, Chris Tracewell wrote:
>
>> NOTE :: GC Enabled
>>
>> I am using an NSScanner in an NSString category but am crashing whenever I try to log the string I scanned into or to return it. If I comment out the NSLog there are no problems.
>>
>> NSString *theScannedString;
>> NSScanner *theScanner = [NSScanner scannerWithString:theNewHTML];
>> NSCharacterSet *theCharacterSet = [NSCharacterSet characterSetWithCharactersInString:@"1234567890abcdefghijklmnopqrstuvwxyz`~!@#$%^&*()-_=+<>?,./:\";'[]\{}| "];
>> [theScanner scanCharactersFromSet:theCharacterSet intoString:&theScannedString];
>>
>> NSLog(@"%@",theScannedString);
>>
>> Does anyone have a hint as to what may be the issue?
>>
>> Thanks
>>
>> --chris_______________________________________________
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