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Debug EXC_BAD_ACCESS from NSString

I had the message EXC_BAD_ACCESS in the console. I read about the environment variables NSZombieEnabled and MallocStackLoggingNoCompact on this site . I created environment variables: NSZombieEnabled = YES and MallocStackLoggingNoCompact = 1 . In the console, I saw

2010-03-01 19: 13: 46,924 CruzNomad [7952: 207] *** - [CFString stringByAddingPercentEscapesUsingEncoding]: message sent to the freed instance 0x58448e0

Then at the prompt (gdb) I did info malloc-history 0x58448e0 , which gave me:

Alloc: Block address: 0x058448e0 length: 64
Stack - pthread: 0xa0b33500 number of frames: 25
    0: 0x98e089bc in malloc_zone_malloc
    1: 0x21516aa in _CFRuntimeCreateInstance
    2: 0x2152bf8 in __CFStringCreateImmutableFunnel3
    3: 0x21567d9 in CFStringCreateCopy
    4: 0x21742fc in _CFStringCreateWithFormatAndArgumentsAux
    5: 0xdb546 in -[NSPlaceholderString initWithFormat:locale:arguments:]
    6: 0xdb4d8 in +[NSString stringWithFormat:]
    7: 0x23aa3 in -[BuisnessCardViewController viewDidLoad] at /Users/.../Classes/BuisnessCardViewController.m:85
    8: 0x3d6796 in -[UIViewController view]
    9: 0x347b4 in -[gm_menuViewController btn5_Pressed:] at /Users/.../Classes/menuViewController.m:535
   10: 0x357459 in -[UIApplication sendAction:to:from:forEvent:]
   11: 0x3baba2 in -[UIControl sendAction:to:forEvent:]
   12: 0x3bcdc3 in -[UIControl(Internal) _sendActionsForEvents:withEvent:]
   13: 0x3bbb0f in -[UIControl touchesEnded:withEvent:]
   14: 0x370e33 in -[UIWindow _sendTouchesForEvent:]
   15: 0x35a81c in -[UIApplication sendEvent:]
   16: 0x3610b5 in _UIApplicationHandleEvent
   17: 0x2984ed1 in PurpleEventCallback
   18: 0x2197b80 in CFRunLoopRunSpecific
   19: 0x2196c48 in CFRunLoopRunInMode
   20: 0x298378d in GSEventRunModal
   21: 0x2983852 in GSEventRun
   22: 0x362003 in UIApplicationMain
   23: 0x2c8c in main at /Users/.../source/main.m:14
   24: 0x2bfa in start

Line 7 says that the problem was line 85 of BuisnessCardViewController.m. This line is here:

fullAddress = [NSString stringWithFormat:@"%@ %@", fullAddress, myString];

fullAddress myString fullAddress.

, , fullAddress. , " ".

fullAddress . Google 164 .

NSString    *urlString = [NSString stringWithFormat:@"http://maps.google.com/maps/geo?q=%@&output=csv", [fullAddress stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];

" ". ...

!

+5
2

, , , .

, , :

[fullAddress retain];


[myString retain];

, .

+3

?

fullAddress = [NSString stringWithFormat:@"%@ %@", fullAddress, myString];

:

- (NSString *)stringByAppendingFormat:(NSString *)format ...

:

[fullAddress stringByAppendingFormat:@" %@", myString];
+1

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