Setting int more than once causes crash

Question

Setting int more than once causes crash

I'm doing a CABasicAnimation and getting the value from a nested NSMutableArray.

Everything is great the first time it runs but crashes when called again either with custom functions or viewDidLoad.

I've isolated it down to this line

int int1 = [[[locationsArray objectAtIndex:0] objectAtIndex:0  ]integerValue] ;

I assume it's to do with int not being a pointer but I'm lost as have to get the value without crashing the second time around

Process:         CEO Report 2011 [61880]
Path:            /Users/julian/Library/Application Support/iPhone Simulator/4.2/Applications/03CFB7BC-0722-4CA0-9E7D-39772AEEF444/CEO Report 2011.app/CEO Report 2011
Identifier:      CEO Report 2011
Version:         ??? (???)
Code Type:       X86 (Native)
Parent Process:  launchd [252]

Date/Time:       2011-11-13 17:04:28.093 +0000
OS Version:      Mac OS X 10.6.8 (10K549)
Report Version:  6

Exception Type:  EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x000000005079706f
Crashed Thread:  0  Dispatch queue: com.apple.main-thread

Application Specific Information:
objc_msgSend() selector name: objectAtIndex:
iPhone Simulator 235, iPhone OS 4.2 (iPad/8C134)

Thread 0 Crashed:  Dispatch queue: com.apple.main-thread
0   libobjc.A.dylib                 0x012f1a78 objc_msgSend + 44
1   CEO Report 2011                 0x0001afbd -[TalentRVC doBoxes:] + 61 (TalentRVC.m:594)
2   CEO Report 2011                 0x00017025 -[TalentRVC locationSelected:] + 1123 (TalentRVC.m:137)
3   CEO Report 2011                 0x0001659f -[TalentRVC segmentedControlIndexChangedA] + 290 (TalentRVC.m:53)
4   UIKit                           0x002fba6e -[UIApplication sendAction:to:from:forEvent:] + 119
5   UIKit                           0x0038a1b5 -[UIControl sendAction:to:forEvent:] + 67
6   UIKit                           0x0038c647 -[UIControl(Internal) _sendActionsForEvents:withEvent:] + 527
7   UIKit                           0x0038a16c -[UIControl sendActionsForControlEvents:] + 49
8   UIKit                           0x003c96b2 -[UISegmentedControl setSelectedSegmentIndex:] + 574
9   UIKit                           0x003ce17e -[UISegmentedControl touchesBegan:withEvent:] + 971
10  UIKit                           0x00320025 -[UIWindow _sendTouchesForEvent:] + 395
11  UIKit                           0x0030137a -[UIApplication sendEvent:] + 447
12  UIKit                           0x00306732 _UIApplicationHandleEvent + 7576
13  GraphicsServices                0x01a5ca36 PurpleEventCallback + 1550
14  CoreFoundation                  0x01171064 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 52
15  CoreFoundation                  0x010d16f7 __CFRunLoopDoSource1 + 215
16  CoreFoundation                  0x010ce983 __CFRunLoopRun + 979
17  CoreFoundation                  0x010ce240 CFRunLoopRunSpecific + 208
18  CoreFoundation                  0x010ce161 CFRunLoopRunInMode + 97
19  GraphicsServices                0x01a5b268 GSEventRunModal + 217
20  GraphicsServices                0x01a5b32d GSEventRun + 115
21  UIKit                           0x0030a42e UIApplicationMain + 1160
22  CEO Report 2011                 0x00002864 main + 102 (main.m:14)
23  CEO Report 2011                 0x000027f5 start + 53

Thread 1:  Dispatch queue: com.apple.libdispatch-manager
0   libSystem.B.dylib               0x98a10382 kevent + 10
1   libSystem.B.dylib               0x98a10a9c _dispatch_mgr_invoke + 215
2   libSystem.B.dylib               0x98a0ff59 _dispatch_queue_invoke + 163
3   libSystem.B.dylib               0x98a0fcfe _dispatch_worker_thread2 + 240
4   libSystem.B.dylib               0x98a0f781 _pthread_wqthread + 390
5   libSystem.B.dylib               0x98a0f5c6 start_wqthread + 30

Thread 2:  WebThread
0   libSystem.B.dylib               0x989e9afa mach_msg_trap + 10
1   libSystem.B.dylib               0x989ea267 mach_msg + 68
2   CoreFoundation                  0x011714a6 __CFRunLoopServiceMachPort + 150
3   CoreFoundation                  0x010ce874 __CFRunLoopRun + 708
4   CoreFoundation                  0x010ce240 CFRunLoopRunSpecific + 208
5   CoreFoundation                  0x010ce161 CFRunLoopRunInMode + 97
6   WebCore                         0x023e1423 RunWebThread(void*) + 499
7   libSystem.B.dylib               0x98a17259 _pthread_start + 345
8   libSystem.B.dylib               0x98a170de thread_start + 34

Thread 3:
0   libSystem.B.dylib               0x989e9afa mach_msg_trap + 10
1   libSystem.B.dylib               0x989ea267 mach_msg + 68
2   CoreFoundation                  0x011714a6 __CFRunLoopServiceMachPort + 150
3   CoreFoundation                  0x010ce874 __CFRunLoopRun + 708
4   CoreFoundation                  0x010ce240 CFRunLoopRunSpecific + 208
5   CoreFoundation                  0x010ce161 CFRunLoopRunInMode + 97
6   Foundation                      0x0009b162 +[NSURLConnection(NSURLConnectionReallyInternal) _resourceLoadLoop:] + 398
7   Foundation                      0x00065d4c -[NSThread main] + 81
8   Foundation                      0x00065cd8 __NSThread__main__ + 1387
9   libSystem.B.dylib               0x98a17259 _pthread_start + 345
10  libSystem.B.dylib               0x98a170de thread_start + 34

Thread 4:  com.apple.CFSocket.private
0   libSystem.B.dylib               0x98a08ac6 select$DARWIN_EXTSN + 10
1   CoreFoundation                  0x01102cbc __CFSocketManager + 812
2   libSystem.B.dylib               0x98a17259 _pthread_start + 345
3   libSystem.B.dylib               0x98a170de thread_start + 34

Thread 5:
0   libSystem.B.dylib               0x98a0f412 __workq_kernreturn + 10
1   libSystem.B.dylib               0x98a0f9a8 _pthread_wqthread + 941
2   libSystem.B.dylib               0x98a0f5c6 start_wqthread + 30

Thread 0 crashed with X86 Thread State (32-bit):
  eax: 0x5079706f  ebx: 0x0001af8c  ecx: 0x04c8a1ff  edx: 0x00200855
  edi: 0x010bfbd0  esi: 0x56e58955  ebp: 0xbfffd408  esp: 0xbfffd3d4
   ss: 0x0000001f  efl: 0x00010206  eip: 0x012f1a78   cs: 0x00000017
   ds: 0x0000001f   es: 0x0000001f   fs: 0x00000000   gs: 0x00000037
  cr2: 0x5079706f

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 0xc2a9000 -  0xc2b7ff3 +AccountSettings ??? (???) <E77F2419-8ADC-3CC5-23A9-74F2CECA68B3> /Developer-3/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.2.sdk/System/Library/PrivateFrameworks/AccountSettings.framework/AccountSettings
 0xc2c1000 -  0xc2c5fff +ApplePushService ??? (???) <218FD678-275F-0EDC-C9FF-D03062736212> /Developer-3/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.2.sdk/System/Library/PrivateFrameworks/ApplePushService.framework/ApplePushService
 0xc2cb000 -  0xc2dcffb +DataDetectorsUI 52.0.0 (compatibility 1.0.0) <A2C9C080-84D0-5B51-40BE-4B6A7C512D91> /Developer-3/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.2.sdk/System/Library/PrivateFrameworks/DataDetectorsUI.framework/DataDetectorsUI
 0xc2e9000 -  0xc2fdfe7 +DataDetectorsCore 154.0.0 (compatibility 1.0.0) <113CA3D9-474B-1223-ACA7-EB4D473C1583> /Developer-3/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.2.sdk/System/Library/PrivateFrameworks/DataDetectorsCore.framework/DataDetectorsCore
 0xcdbd000 -  0xce00ff3 +QuickLook ??? (???) <94F8984E-BCEA-ADED-7749-C29CE5E04C68> /Developer-3/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.2.sdk/System/Library/Frameworks/QuickLook.framework/QuickLook
 0xce29000 -  0xcf75fff +RawCamera 1.0.1 (compatibility 1.0.0) <33F076B3-56FC-6978-3FD7-DF5B1A416D02> /Developer-3/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.2.sdk/System/Library/CoreServices/RawCamera.bundle/RawCamera
0x8fe00000 - 0x8fe4163b  dyld 132.1 (???) <4CDE4F04-0DD6-224E-ACE5-3C06E169A801> /usr/lib/dyld
0x91590000 - 0x91593fe7  libmathCommon.A.dylib 315.0.0 (compatibility 1.0.0) <1622A54F-1A98-2CBE-B6A4-2122981A500E> /usr/lib/system/libmathCommon.A.dylib
0x91681000 - 0x91681ff7  com.apple.Accelerate 1.6 (Accelerate 1.6) <3891A689-4F38-FACD-38B2-4BF937DE30CF> /System/Library/Frameworks/Accelerate.framework/Versions/A/Accelerate
0x92ff7000 - 0x930ebff7  libiconv.2.dylib 7.0.0 (compatibility 7.0.0) <061ABF36-8BA9-79C1-6CE7-EC69A4998F51> /usr/lib/libiconv.2.dylib
0x9352d000 - 0x93541fe7  libbsm.0.dylib ??? (???) <821E415B-6C42-D359-78FF-E892792F8C52> /usr/lib/libbsm.0.dylib
0x9554f000 - 0x9562ffe7  com.apple.vImage 4.1 (4.1) <D029C515-08E1-93A6-3705-DD062A3A672C> /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vImage.framework/Versions/A/vImage
0x95630000 - 0x9569afe7  libstdc++.6.dylib 7.9.0 (compatibility 7.0.0) <411D87F4-B7E1-44EB-F201-F8B4F9227213> /usr/lib/libstdc++.6.dylib
0x97f72000 - 0x97f7eff7  libkxld.dylib ??? (???) <9A441C48-2D18-E716-5F38-CBEAE6A0BB3E> /usr/lib/system/libkxld.dylib
0x97f7f000 - 0x97f7fff7  com.apple.vecLib 3.6 (vecLib 3.6) <FF4DC8B6-0AB0-DEE8-ADA8-7B57645A1F36> /System/Library/Frameworks/vecLib.framework/Versions/A/vecLib
0x9869b000 - 0x986bbfe7  libresolv.9.dylib 41.0.0 (compatibility 1.0.0) <BF7FF2F6-5FD3-D78F-77BC-9E2CB2A5E309> /usr/lib/libresolv.9.dylib
0x98704000 - 0x98746ff7  libvDSP.dylib 268.0.1 (compatibility 1.0.0) <8A4721DE-25C4-C8AA-EA90-9DA7812E3EBA> /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libvDSP.dylib
0x98747000 - 0x987b6ff7  libvMisc.dylib 268.0.1 (compatibility 1.0.0) <595A5539-9F54-63E6-7AAC-C04E1574B050> /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libvMisc.dylib
0x989e9000 - 0x98b90ff7  libSystem.B.dylib 125.2.11 (compatibility 1.0.0) <2DCD13E3-1BD1-6F25-119A-3863A3848B90> /usr/lib/libSystem.B.dylib
0x9a4e5000 - 0x9a542ff7  com.apple.framework.IOKit 2.0 (???) <3DABAB9C-4949-F441-B077-0498F8E47A35> /System/Library/Frameworks/IOKit.framework/Versions/A/IOKit
0xffff0000 - 0xffff1fff  libSystem.B.dylib ??? (???) <2DCD13E3-1BD1-6F25-119A-3863A3848B90> /usr/lib/libSystem.B.dylib

EDIT: After turning on NSZombieEnabled looks like my NSMutableArray is being deallocated?

.h

@interface TalentRVC : UIViewController <locationGlobalMenuDelegate, industryGlobalMenuDelegate>{   
    NSMutableArray *locationsArray;

}
@property (nonatomic, retain) NSMutableArray *locationsArray;
@end

.m

-(void)buildArrays {
    locationsArray = [NSMutableArray arrayWithCapacity: 8];
    for (int i = 0; i!=8; i++){
        NSMutableArray *array = [NSMutableArray arrayWithCapacity: 8];
        [locationsArray addObject: array];
    }

    //Africa
    [[locationsArray objectAtIndex:0] addObject: [NSNumber numberWithInt: 83]];
    ...

    //Middle East
    [[locationsArray objectAtIndex:1] addObject: [NSNumber numberWithInt: 89]];
    ...

    NSLog(@"Built locationsArray");

 }

So after running the first time locationsArray is dumped from memory? If so, how do I can it?

objective-c

ios

int

nsnumber

asked on Stack Overflow Nov 13, 2011 by

JulianB • edited Nov 13, 2011 by

JulianB

1 Answer

Change this

locationsArray = [NSMutableArray arrayWithCapacity: 8];

to this

locationsArray = [[NSMutableArray alloc] initWithCapacity: 8];

If you are using ARC you are done. If not you have to think about where to release this memory again.

answered on Stack Overflow Nov 13, 2011 by

dasdom

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