I have an app on the Mac App Store, and I get these crash reports from my users which I cannot reproduce or figure out how to debug. It seem like something crashes due to NSManagedObjectContext reset, but it's not obvious, and users don't have a reproducible case. The main thread can have a different stack trace, but the non-main thread always has the same stack trace.
Exception Type: SIGSEGV
Exception Codes: SEGV_MAPERR at 0x41bfc026bec0
Crashed Thread: 8
Application Specific Information:
Selector name found in current argument registers: retain
Thread 0:
0 libFontParser.dylib 0x00007fff8efa7921 _ZNK20TTrueTypeFontHandler11RenderGlyphEtR27TTrueTypeQuadOutlineContextj + 89
1 libFontParser.dylib 0x00007fff8efa789e _ZNK20TTrueTypeFontHandler14GetOutlinePathEtRK18TGlyphOutlineBatch + 60
2 libFontParser.dylib 0x00007fff8efa744a FPFontCopyGlyphPath + 394
3 CoreGraphics 0x00007fff8767e913 CGFontCreateGlyphPath + 44
4 CoreGraphics 0x00007fff8767e85d CGFontCreateGlyphBitmap + 437
5 CoreGraphics 0x00007fff8767e607 _ZN14CGGlyphBuilder22create_missing_bitmapsEPK17CGGlyphIdentifiermPPK13CGGlyphBitmap + 109
6 libRIP.A.dylib 0x00007fff8b7bec2d render_glyphs + 204
7 libRIP.A.dylib 0x00007fff8b7bdf6f draw_glyph_bitmaps + 1585
8 libRIP.A.dylib 0x00007fff8b7bd8cd ripc_DrawGlyphs + 2785
9 CoreGraphics 0x00007fff87738077 draw_glyphs + 1034
10 CoreText 0x00007fff8ac50426 _ZL25DrawSbixGlyphsAtPositionsPK5TFontP6CGFontRK6TCFRefIPK8__CFDataEPKtPK7CGPointmP9CGContext17CGAffineTransformSI_ + 2990
11 CoreText 0x00007fff8abfdb73 CTFontDrawGlyphsWithAdvances + 789
12 UIFoundation 0x00007fff966f212e -[NSLineFragmentRenderingContext drawAtPoint:inContext:] + 5398
13 UIFoundation 0x00007fff96616728 __NSStringDrawingEngine + 16941
14 UIFoundation 0x00007fff966108ff _NSStringDrawingCore + 150
15 AppKit 0x00007fff93ce6d50 _NSDrawTextCell + 6954
16 AppKit 0x00007fff9421cdf8 __47-[NSTextFieldCell drawLayer:inGraphicsContext:]_block_invoke + 576
17 AppKit 0x00007fff944aa538 +[NSAppearance _performWithCurrentAppearance:usingBlock:] + 79
18 AppKit 0x00007fff93cf6739 -[NSTextFieldCell drawLayer:inGraphicsContext:] + 225
19 AppKit 0x00007fff93cf6470 +[NSGraphicsContext configureGraphicsContextForCALayer:withCGContext:andRenderWithHandler:] + 97
20 QuartzCore 0x00007fff939f1e93 CABackingStoreUpdate_ + 3306
21 QuartzCore 0x00007fff939f11a3 ___ZN2CA5Layer8display_Ev_block_invoke + 59
22 QuartzCore 0x00007fff939f115f x_blame_allocations + 81
23 QuartzCore 0x00007fff939f0c5c _ZN2CA5Layer8display_Ev + 1546
24 AppKit 0x00007fff93ce039f _NSBackingLayerDisplay + 617
25 QuartzCore 0x00007fff939f0381 _ZN2CA5Layer17display_if_neededEPNS_11TransactionE + 603
26 QuartzCore 0x00007fff939efabd _ZN2CA5Layer28layout_and_display_if_neededEPNS_11TransactionE + 35
27 QuartzCore 0x00007fff939ef24e _ZN2CA7Context18commit_transactionEPNS_11TransactionE + 242
28 QuartzCore 0x00007fff939eeea4 _ZN2CA11Transaction6commitEv + 390
29 QuartzCore 0x00007fff939ffcad _ZN2CA11Transaction17observer_callbackEP19__CFRunLoopObservermPv + 71
30 CoreFoundation 0x00007fff8bbd0da7 __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 23
31 CoreFoundation 0x00007fff8bbd0d00 __CFRunLoopDoObservers + 368
32 CoreFoundation 0x00007fff8bbc2878 CFRunLoopRunSpecific + 328
33 HIToolbox 0x00007fff918f1aef RunCurrentEventLoopInMode + 235
34 HIToolbox 0x00007fff918f176e ReceiveNextEventCommon + 179
35 HIToolbox 0x00007fff918f16ab _BlockUntilNextEventMatchingListInModeWithFilter + 71
36 AppKit 0x00007fff93bb0f81 _DPSNextEvent + 964
37 AppKit 0x00007fff93bb0730 -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 194
38 AppKit 0x00007fff93ba4593 -[NSApplication run] + 594
39 AppKit 0x00007fff93b8fa14 NSApplicationMain + 1832
40 libdyld.dylib 0x00007fff88d605c9 start + 1
...
Thread 7:
0 libsystem_kernel.dylib 0x00007fff94d1b94a __workq_kernreturn + 10
1 libsystem_pthread.dylib 0x00007fff9508740d start_wqthread + 13
Thread 8 Crashed:
0 libobjc.A.dylib 0x00007fff90c740dd objc_msgSend + 29
1 Foundation 0x00007fff92461d24 NSKeyValuePushPendingNotificationPerThread + 446
2 Foundation 0x00007fff9240968f NSKeyValueWillChange + 465
3 Foundation 0x00007fff924bc33e -[NSObject(NSKeyValueObservingPrivate) _willChangeValuesForKeys:] + 234
4 CoreData 0x00007fff8d9fdd6d -[NSFaultHandler turnObject:intoFaultWithContext:] + 221
5 CoreData 0x00007fff8da28641 -[NSManagedObjectContext(_NSInternalAdditions) _disposeObjects:count:notifyParent:] + 353
6 CoreData 0x00007fff8da27c78 -[NSManagedObjectContext(_NSInternalAdditions) _dispose:] + 392
7 CoreData 0x00007fff8da27821 -[NSManagedObjectContext _dealloc__] + 337
8 CoreData 0x00007fff8da563ab __internalBlockToDeallocNSManagedObjectContext_block_invoke + 75
9 CoreData 0x00007fff8da1c246 developerSubmittedBlockToNSManagedObjectContextPerform + 182
10 libdispatch.dylib 0x00007fff8f122c13 _dispatch_client_callout + 8
11 libdispatch.dylib 0x00007fff8f126365 _dispatch_queue_drain + 1100
12 libdispatch.dylib 0x00007fff8f127ecc _dispatch_queue_invoke + 202
13 libdispatch.dylib 0x00007fff8f1256b7 _dispatch_root_queue_drain + 463
14 libdispatch.dylib 0x00007fff8f133fe4 _dispatch_worker_thread3 + 91
15 libsystem_pthread.dylib 0x00007fff95089637 _pthread_wqthread + 729
16 libsystem_pthread.dylib 0x00007fff9508740d start_wqthread + 13
Any idea how to find out what's causing the issue and possibly fix it? I've tried enabling zombies, setting NSBindingDebugLogLevel to 1, and running Zombies instrument, but no luck.
Related
I'm using SinchRTC 3.11.1 in my IOS App. When I enter a video chat the following warnings are being produced because of the Sinch library. A few UI API calls are being done from a background thread instead of the main UI thread. Can these be fixed within the library?
Main Thread Checker: UI API called on a background thread: -[UIApplication applicationState]
PID: 96751, TID: 7066961, Thread name: Sinch Worker Thread, Queue name: com.apple.root.default-qos.overcommit, QoS: 21
Backtrace:
4 XXXXXX 0x0000000105d7eb41 -[SINClientImpl onPubSubSubscriptionConnectionEvent] + 66
5 XXXXXX 0x0000000105d7ec84 -[SINClientImpl onPubSubSubscriptionSuccess:] + 197
6 CoreFoundation 0x0000000108740a3c __CFNOTIFICATIONCENTER_IS_CALLING_OUT_TO_AN_OBSERVER__ + 12
7 CoreFoundation 0x000000010874093a _CFXRegistrationPost + 442
8 CoreFoundation 0x0000000108740682 ___CFXNotificationPost_block_invoke + 50
9 CoreFoundation 0x0000000108702a02 -[_CFXNotificationRegistrar find:object:observer:enumerator:] + 1826
10 CoreFoundation 0x0000000108701b7c _CFXNotificationPost + 652
11 Foundation 0x0000000109ec0172 -[NSNotificationCenter postNotificationName:object:userInfo:] + 66
12 XXXXXX 0x0000000105d9b8c7 -[SINPubSubscriber notify:userInfo:] + 336
13 XXXXXX 0x0000000105d9ba46 -[SINPubSubscriber subscribeDidSucceedOnChannel:sequence:withRequestedTimetoken:] + 220
14 XXXXXX 0x0000000105d92515 -[PubnubSubscriber request:withInitialTimeToken:didSucceedWithResponse:] + 435
15 XXXXXX 0x0000000105d920d5 __43-[PubnubSubscriber subscribeWithTimeToken:]_block_invoke + 111
16 XXXXXX 0x0000000105d909ce __52-[PubnubService performRequest:onSuccess:onFailure:]_block_invoke.42 + 143
17 XXXXXX 0x0000000105d8ffc9 -[PubnubRequestOperation operationWillFinish] + 284
18 XXXXXX 0x0000000105d6902d -[SINQRunLoopOperation finishWithError:] + 70
19 XXXXXX 0x0000000105d68536 -[SINQHTTPOperation finishWithError:] + 41
20 CFNetwork 0x0000000107f7e0e5 __65-[NSURLConnectionInternal _withConnectionAndDelegate:onlyActive:]_block_invoke + 53
21 CFNetwork 0x0000000107f7e00a -[NSURLConnectionInternal _withConnectionAndDelegate:onlyActive:] + 198
22 CFNetwork 0x0000000107f7df32 -[NSURLConnectionInternal _withActiveConnectionAndDelegate:] + 48
23 CFNetwork 0x0000000107f823b3 ___ZN27URLConnectionClient_Classic26_delegate_didFinishLoadingEU13block_pointerFvvE_block_invoke + 100
24 CFNetwork 0x00000001081283cb ___ZN27URLConnectionClient_Classic18_withDelegateAsyncEPKcU13block_pointerFvP16_CFURLConnectionPK33CFURLConnectionClientCurrent_VMaxE_block_invoke_2 + 100
25 libdispatch.dylib 0x0000000110e8a658 _dispatch_client_callout + 8
26 libdispatch.dylib 0x0000000110e8fe6b _dispatch_block_invoke_direct + 589
27 CFNetwork 0x0000000107f7de04 _ZN19RunloopBlockContext13_invoke_blockEPKvPv + 24
28 CoreFoundation 0x00000001086f35d8 CFArrayApplyFunction + 72
29 CFNetwork 0x0000000107f7dcda _ZN19RunloopBlockContext7performEv + 132
30 CFNetwork 0x0000000107f7db78 _ZN17MultiplexerSource7performEv + 282
31 CFNetwork 0x0000000107f7d9ab _ZN17MultiplexerSource8_performEPv + 65
32 CoreFoundation 0x0000000108747e71 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
33 CoreFoundation 0x000000010872c56f __CFRunLoopDoSources0 + 271
34 CoreFoundation 0x000000010872bb1f __CFRunLoopRun + 1039
35 CoreFoundation 0x000000010872b499 CFRunLoopRunSpecific + 409
36 Foundation 0x0000000109eda22e -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 274
37 XXXXXX 0x0000000105cf8bd8 _ZN4base20MessagePumpNSRunLoop2017-07-12 12:20:51.360149-0700 XXXXXX[96751:7066961] [reports] Main Thread Checker: UI API called on a background thread: -[UIApplication applicationState]
PID: 96751, TID: 7066961, Thread name: Sinch Worker Thread, Queue name: com.apple.root.default-qos.overcommit, QoS: 21
Backtrace:
4 XXXXXX 0x0000000105d7eb41 -[SINClientImpl onPubSubSubscriptionConnectionEvent] + 66
5 XXXXXX 0x0000000105d7ec84 -[SINClientImpl onPubSubSubscriptionSuccess:] + 197
6 CoreFoundation 0x0000000108740a3c __CFNOTIFICATIONCENTER_IS_CALLING_OUT_TO_AN_OBSERVER__ + 12
7 CoreFoundation 0x000000010874093a _CFXRegistrationPost + 442
8 CoreFoundation 0x0000000108740682 ___CFXNotificationPost_block_invoke + 50
9 CoreFoundation 0x0000000108702a02 -[_CFXNotificationRegistrar find:object:observer:enumerator:] + 1826
10 CoreFoundation 0x0000000108701b7c _CFXNotificationPost + 652
11 Foundation 0x0000000109ec0172 -[NSNotificationCenter postNotificationName:object:userInfo:] + 66
12 XXXXXX 0x0000000105d9b8c7 -[SINPubSubscriber notify:userInfo:] + 336
13 XXXXXX 0x0000000105d9ba46 -[SINPubSubscriber subscribeDidSucceedOnChannel:sequence:withRequestedTimetoken:] + 220
14 XXXXXX 0x0000000105d92515 -[PubnubSubscriber request:withInitialTimeToken:didSucceedWithResponse:] + 435
15 XXXXXX 0x0000000105d920d5 __43-[PubnubSubscriber subscribeWithTimeToken:]_block_invoke + 111
16 XXXXXX 0x0000000105d909ce __52-[PubnubService performRequest:onSuccess:onFailure:]_block_invoke.42 + 143
17 XXXXXX 0x0000000105d8ffc9 -[PubnubRequestOperation operationWillFinish] + 284
18 XXXXXX 0x0000000105d6902d -[SINQRunLoopOperation finishWithError:] + 70
19 XXXXXX 0x0000000105d68536 -[SINQHTTPOperation finishWithError:] + 41
20 CFNetwork 0x0000000107f7e0e5 __65-[NSURLConnectionInternal _withConnectionAndDelegate:onlyActive:]_block_invoke + 53
21 CFNetwork 0x0000000107f7e00a -[NSURLConnectionInternal _withConnectionAndDelegate:onlyActive:] + 198
22 CFNetwork 0x0000000107f7df32 -[NSURLConnectionInternal _withActiveConnectionAndDelegate:] + 48
23 CFNetwork 0x0000000107f823b3 ___ZN27URLConnectionClient_Classic26_delegate_didFinishLoadingEU13block_pointerFvvE_block_invoke + 100
24 CFNetwork 0x00000001081283cb ___ZN27URLConnectionClient_Classic18_withDelegateAsyncEPKcU13block_pointerFvP16_CFURLConnectionPK33CFURLConnectionClientCurrent_VMaxE_block_invoke_2 + 100
25 libdispatch.dylib 0x0000000110e8a658 _dispatch_client_callout + 8
26 libdispatch.dylib 0x0000000110e8fe6b _dispatch_block_invoke_direct + 589
27 CFNetwork 0x0000000107f7de04 _ZN19RunloopBlockContext13_invoke_blockEPKvPv + 24
28 CoreFoundation 0x00000001086f35d8 CFArrayApplyFunction + 72
29 CFNetwork 0x0000000107f7dcda _ZN19RunloopBlockContext7performEv + 132
30 CFNetwork 0x0000000107f7db78 _ZN17MultiplexerSource7performEv + 282
31 CFNetwork 0x0000000107f7d9ab _ZN17MultiplexerSource8_performEPv + 65
32 CoreFoundation 0x0000000108747e71 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
33 CoreFoundation 0x000000010872c56f __CFRunLoopDoSources0 + 271
34 CoreFoundation 0x000000010872bb1f __CFRunLoopRun + 1039
35 CoreFoundation 0x000000010872b499 CFRunLoopRunSpecific + 409
36 Foundation 0x0000000109eda22e -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 274
37 XXXXXX 0x0000000105cf8bd8 _ZN4base20MessagePumpNSRunLoop
=================================================================
Main Thread Checker: UI API called on a background thread: -[UIView layer]
PID: 96751, TID: 7066464, Thread name: (none), Queue name: com.sinch.SINVideoCapturer.session, QoS: 25
Backtrace:
4 XXXXXX 0x0000000105d66f4f -[SINVideoCapturer startWithPreset_sq:frameRate:] + 505
5 libdispatch.dylib 0x0000000110e8966d _dispatch_call_block_and_release + 12
6 libdispatch.dylib 0x0000000110e8a658 _dispatch_client_callout + 8
7 libdispatch.dylib 0x0000000110e9308c _dispatch_queue_serial_drain + 1173
8 libdispatch.dylib 0x0000000110e93aa5 _dispatch_queue_invoke + 342
9 libdispatch.dylib 0x0000000110e96d3b _dispatch_root_queue_drain + 785
10 libdispatch.dylib 0x0000000110e969c7 _dispatch_worker_thread4 + 54
11 libsystem_pthread.dylib 0x00000001112ed616 _pthread_wqthread + 1299
12 libsystem_pthread.dylib 0x00000001112ed0f1 start_wqthread + 13
2017-07-12 12:20:52.112965-0700 XXXXXX[96751:7066464] [reports] Main Thread Checker: UI API called on a background thread: -[UIView layer]
PID: 96751, TID: 7066464, Thread name: (none), Queue name: com.sinch.SINVideoCapturer.session, QoS: 25
Backtrace:
4 XXXXXX 0x0000000105d66f4f -[SINVideoCapturer startWithPreset_sq:frameRate:] + 505
5 libdispatch.dylib 0x0000000110e8966d _dispatch_call_block_and_release + 12
6 libdispatch.dylib 0x0000000110e8a658 _dispatch_client_callout + 8
7 libdispatch.dylib 0x0000000110e9308c _dispatch_queue_serial_drain + 1173
8 libdispatch.dylib 0x0000000110e93aa5 _dispatch_queue_invoke + 342
9 libdispatch.dylib 0x0000000110e96d3b _dispatch_root_queue_drain + 785
10 libdispatch.dylib 0x0000000110e969c7 _dispatch_worker_thread4 + 54
11 libsystem_pthread.dylib 0x00000001112ed616 _pthread_wqthread + 1299
12 libsystem_pthread.dylib 0x00000001112ed0f1 start_wqthread + 13
That is because Xcode 9 features a new main thread checker that checks whether UI API's are executed in Main thread. UI operations are bound to cause problems in a non-main thread. You have to update your SinchRTC to fix this runtime issue. The developers of SinchRTC should patch this and release an update. Hope this helps. For more info., refer this link.
The library should fix theses errors but if you want to disable it you can do it in the scheme, in the Diagnostics option.
A crash is occurring in my app but the crash report only shows system libraries. It is clear that my app is provoking the issue but because 1) of its size and 2) there isn't sign of any of my libraries in the stack trace, I can't figure out where it is happening. As far as I know it is related with NSUrlConnection but it is being used in lots of places.
Does any body knows how can I used Atos or lldb to symbolicate when my app is NOT being mentioned in the stack trace?
Below is the stack.
Thanks
Thread 33:: com.apple.NSURLConnectionLoader Dispatch queue: com.apple.CFFileDescriptor
0 com.apple.CoreFoundation 0x00007fff9d3a2add __CFFileDescriptorEnableCallBacks_block_invoke + 13
1 libdispatch.dylib 0x00007fff9b13440b _dispatch_client_callout + 8
2 libdispatch.dylib 0x00007fff9b1359f2 _dispatch_barrier_sync_f_invoke + 74
3 com.apple.CoreFoundation 0x00007fff9d3a2ab4 CFFileDescriptorEnableCallBacks + 180
4 com.apple.CoreFoundation 0x00007fff9d42cdaa constructCFFD + 122
5 com.apple.CoreFoundation 0x00007fff9d36e48e fileOpen + 238
6 com.apple.CoreFoundation 0x00007fff9d3626a8 _CFStreamOpen + 120
7 com.apple.CoreFoundation 0x00007fff9d36e37f CFReadStreamOpen + 95
8 com.apple.CFNetwork 0x00007fff911b27fe FileURLProtocol::_protocolInterface_startLoad(_CFCachedURLResponse const*) + 578
9 com.apple.CFNetwork 0x00007fff91041350 ___ZN19URLConnectionLoader27_private_ScheduleOriginLoadEPK12NSURLRequestPK20_CFCachedURLResponse_block_invoke_2 + 61
10 com.apple.CFNetwork 0x00007fff910412f1 ___ZNK19URLConnectionLoader25withExistingProtocolAsyncEU13block_pointerFvP11URLProtocolE_block_invoke + 25
11 libdispatch.dylib 0x00007fff9b13440b _dispatch_client_callout + 8
12 libdispatch.dylib 0x00007fff9b142039 _dispatch_block_invoke + 474
13 com.apple.CFNetwork 0x00007fff9104017c RunloopBlockContext::_invoke_block(void const*, void*) + 24
14 com.apple.CoreFoundation 0x00007fff9d33ad74 CFArrayApplyFunction + 68
15 com.apple.CFNetwork 0x00007fff91040075 RunloopBlockContext::perform() + 137
16 com.apple.CFNetwork 0x00007fff9103ff16 MultiplexerSource::perform() + 282
17 com.apple.CFNetwork 0x00007fff9103fd38 MultiplexerSource::_perform(void*) + 72
18 com.apple.CoreFoundation 0x00007fff9d398881 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
19 com.apple.CoreFoundation 0x00007fff9d377fbc __CFRunLoopDoSources0 + 556
20 com.apple.CoreFoundation 0x00007fff9d3774df __CFRunLoopRun + 927
21 com.apple.CoreFoundation 0x00007fff9d376ed8 CFRunLoopRunSpecific + 296
22 com.apple.CFNetwork 0x00007fff9101aa6d +[NSURLConnection(Loader) _resourceLoadLoop:] + 412
23 com.apple.Foundation 0x00007fff9b195e64 __NSThread__start__ + 1351
24 libsystem_pthread.dylib 0x00007fff9997a99d _pthread_body + 131
25 libsystem_pthread.dylib 0x00007fff9997a91a _pthread_start + 168
26 libsystem_pthread.dylib 0x00007fff99978351 thread_start + 13
There are other stackoverflow questions concerning this, but my the solutions mentioned do not appear to apply to this problem. I have a NSTextField and I want to be notified everytime the text changes in the field. I have a NSViewController controlling the view that contains the NSTextField and it will be the observer.
My class simply looks like this:
import Cocoa
class ADDViewController: NSViewController
{
#IBOutlet weak var fieldText: NSTextField!
func fieldTextChanged( notification: NSNotification )
{
println( "fieldTextChanged" )
}
override var nibName: String?
{
return "ADDViewController"
}
override func viewDidLoad()
{
super.viewDidLoad()
NSNotificationCenter.defaultCenter().addObserver( self, selector: "fieldTextChanged:" as Selector, name: NSControlTextDidChangeNotification, object: fieldText )
}
}
The notification is being added and is firing. When I type a character into the field, I see in the stack trace:
#0 0x00007fff905880e9 in objc_msgSend ()
#1 0x00007fff8f27c45c in __CFNOTIFICATIONCENTER_IS_CALLING_OUT_TO_AN_OBSERVER__ ()
#2 0x00007fff8f16c634 in _CFXNotificationPost ()
#3 0x00007fff8fcf0aa1 in -[NSNotificationCenter postNotificationName:object:userInfo:] ()
#4 0x00007fff8f27c45c in __CFNOTIFICATIONCENTER_IS_CALLING_OUT_TO_AN_OBSERVER__ ()
#5 0x00007fff8f16c634 in _CFXNotificationPost ()
#6 0x00007fff8fcf0aa1 in -[NSNotificationCenter postNotificationName:object:userInfo:] ()
#7 0x00007fff8ab3deb1 in -[NSTextView(NSSharing) didChangeText] ()
right before it crashes. I did try changing the selector to:
#objc func fieldTextChanged( notification: NSNotification )
{
println( "fieldTextChanged" )
}
but, when I do this, it still doesn't work. What I see in the console:
2015-08-23 18:36:32.240 addobserver_test[52788:3477511] -[__NSCFString fieldTextChanged:]: unrecognized selector sent to instance 0x6000000c3720
2015-08-23 18:36:32.240 addobserver_test[52788:3477511] An uncaught exception was raised
2015-08-23 18:36:32.240 addobserver_test[52788:3477511] -[__NSCFString fieldTextChanged:]: unrecognized selector sent to instance 0x6000000c3720
2015-08-23 18:36:32.244 addobserver_test[52788:3477511] (
0 CoreFoundation 0x00007fff8f2c003c __exceptionPreprocess + 172
1 libobjc.A.dylib 0x00007fff9059576e objc_exception_throw + 43
2 CoreFoundation 0x00007fff8f2c30ad -[NSObject(NSObject) doesNotRecognizeSelector:] + 205
3 CoreFoundation 0x00007fff8f208e24 ___forwarding___ + 1028
4 CoreFoundation 0x00007fff8f208998 _CF_forwarding_prep_0 + 120
5 CoreFoundation 0x00007fff8f27c45c __CFNOTIFICATIONCENTER_IS_CALLING_OUT_TO_AN_OBSERVER__ + 12
6 CoreFoundation 0x00007fff8f16c634 _CFXNotificationPost + 3140
7 Foundation 0x00007fff8fcf0aa1 -[NSNotificationCenter postNotificationName:object:userInfo:] + 66
8 CoreFoundation 0x00007fff8f27c45c __CFNOTIFICATIONCENTER_IS_CALLING_OUT_TO_AN_OBSERVER__ + 12
9 CoreFoundation 0x00007fff8f16c634 _CFXNotificationPost + 3140
10 Foundation 0x00007fff8fcf0aa1 -[NSNotificationCenter postNotificationName:object:userInfo:] + 66
11 AppKit 0x00007fff8ab3deb1 -[NSTextView(NSSharing) didChangeText] + 348
12 AppKit 0x00007fff8ab3b13b -[NSTextView insertText:replacementRange:] + 2827
13 AppKit 0x00007fff8ab3a237 -[NSTextInputContext(NSInputContext_WithCompletion) insertText:replacementRange:completionHandler:] + 98
14 AppKit 0x00007fff8ab3a1ca __55-[NSTextInputContext handleTSMEvent:completionHandler:]_block_invoke_2242 + 127
15 AppKit 0x00007fff8ab3a12d -[NSTextInputContext do_HandleTSMEvent_insertFixLenTextLoop:whileCondition:dispatchWorkEach:afterEachInsertText:continuation:] + 170
16 AppKit 0x00007fff8b0f653e -[NSTextInputContext tryHandleTSMEvent_insertFixLenText_withContext:dispatchCondition:setupForDispatch:nestedWorkaroundCondition:nestedWorkaroundDispatchWork:loopCondition:dispatchWorkEach:afterEachInsertText:continuation:] + 377
17 AppKit 0x00007fff8ab39b76 __55-[NSTextInputContext handleTSMEvent:completionHandler:]_block_invoke174 + 3779
18 AppKit 0x00007fff8ab38bff -[NSTextInputContext(NSInputContext_WithCompletion) hasMarkedTextWithCompletionHandler:] + 76
19 AppKit 0x00007fff8ab38ba0 __55-[NSTextInputContext handleTSMEvent:completionHandler:]_block_invoke_2 + 95
20 AppKit 0x00007fff8ab38b18 -[NSTextInputContext tryHandleTSMEvent_HasMarkedText_withDispatchCondition:dispatchWork:continuation:] + 101
21 AppKit 0x00007fff8ab387d5 -[NSTextInputContext handleTSMEvent:completionHandler:] + 3122
22 AppKit 0x00007fff8ab37b2e _NSTSMEventHandler + 324
23 HIToolbox 0x00007fff8c691b6c _ZL23DispatchEventToHandlersP14EventTargetRecP14OpaqueEventRefP14HandlerCallRec + 1260
24 HIToolbox 0x00007fff8c690fae _ZL30SendEventToEventTargetInternalP14OpaqueEventRefP20OpaqueEventTargetRefP14HandlerCallRec + 386
25 HIToolbox 0x00007fff8c690e22 SendEventToEventTargetWithOptions + 43
26 HIToolbox 0x00007fff8c6f526c SendTSMEvent_WithCompletionHandler + 417
27 HIToolbox 0x00007fff8c6f576c __SendUnicodeTextAEToUnicodeDoc_WithCompletionHandler_block_invoke + 400
28 HIToolbox 0x00007fff8c6f55a6 __SendFilterTextEvent_WithCompletionHandler_block_invoke + 189
29 HIToolbox 0x00007fff8c6f52c0 SendTSMEvent_WithCompletionHandler + 501
30 HIToolbox 0x00007fff8c6f508f SendFilterTextEvent_WithCompletionHandler + 236
31 HIToolbox 0x00007fff8c6f4d51 SendUnicodeTextAEToUnicodeDoc_WithCompletionHandler + 295
32 HIToolbox 0x00007fff8c6f4ae9 __utDeliverTSMEvent_WithCompletionHandler_block_invoke_2 + 296
33 HIToolbox 0x00007fff8c6f4988 __utDeliverTSMEvent_WithCompletionHandler_block_invoke + 437
34 HIToolbox 0x00007fff8c6f47cd TSMKeyEvent_WithCompletionHandler + 701
35 HIToolbox 0x00007fff8c6f44d0 __TSMProcessRawKeyEventWithOptionsAndCompletionHandler_block_invoke_4 + 251
36 HIToolbox 0x00007fff8c6f4386 __TSMProcessRawKeyEventWithOptionsAndCompletionHandler_block_invoke_3 + 330
37 HIToolbox 0x00007fff8c6f4112 __TSMProcessRawKeyEventWithOptionsAndCompletionHandler_block_invoke_2 + 259
38 HIToolbox 0x00007fff8c6f3f25 __TSMProcessRawKeyEventWithOptionsAndCompletionHandler_block_invoke + 251
39 HIToolbox 0x00007fff8c6d876f TSMProcessRawKeyEventWithOptionsAndCompletionHandler + 3068
40 AppKit 0x00007fff8b0fce86 __61-[NSTextInputContext _handleEvent:options:completionHandler:]_block_invoke949 + 131
41 AppKit 0x00007fff8ab36352 -[NSTextInputContext tryTSMProcessRawKeyEvent:dispatchCondition:setupForDispatch:furtherCondition:dispatchWork:continuation:] + 127
42 AppKit 0x00007fff8ab36085 -[NSTextInputContext _handleEvent:options:completionHandler:] + 1266
43 AppKit 0x00007fff8ab35b4e -[NSTextInputContext handleEvent:] + 109
44 AppKit 0x00007fff8ab35a54 -[NSView interpretKeyEvents:] + 207
45 AppKit 0x00007fff8ab3586a -[NSTextView keyDown:] + 695
46 AppKit 0x00007fff8b0250fb -[NSWindow _reallySendEvent:isDelayedEvent:] + 5452
47 AppKit 0x00007fff8a9b6c86 -[NSWindow sendEvent:] + 470
48 AppKit 0x00007fff8a9b38b1 -[NSApplication sendEvent:] + 4199
49 AppKit 0x00007fff8a8dcb68 -[NSApplication run] + 711
50 AppKit 0x00007fff8a859244 NSApplicationMain + 1832
51 addobserver_test 0x00000001000066cd main + 109
52 libdyld.dylib 0x00007fff91e0b5c9 start + 1
53 ??? 0x0000000000000003 0x0 + 3
)
2015-08-23 18:36:32.358 addobserver_test[52788:3477511] -[__NSCFString fieldTextChanged:]: unrecognized selector sent to instance 0x6000000c3720
2015-08-23 18:36:32.358 addobserver_test[52788:3477511] Exception detected while handling key input.
2015-08-23 18:36:32.358 addobserver_test[52788:3477511] -[__NSCFString fieldTextChanged:]: unrecognized selector sent to instance 0x6000000c3720
2015-08-23 18:36:32.361 addobserver_test[52788:3477511] (
0 CoreFoundation 0x00007fff8f2c003c __exceptionPreprocess + 172
1 libobjc.A.dylib 0x00007fff9059576e objc_exception_throw + 43
2 CoreFoundation 0x00007fff8f2c30ad -[NSObject(NSObject) doesNotRecognizeSelector:] + 205
3 CoreFoundation 0x00007fff8f208e24 ___forwarding___ + 1028
4 CoreFoundation 0x00007fff8f208998 _CF_forwarding_prep_0 + 120
5 CoreFoundation 0x00007fff8f27c45c __CFNOTIFICATIONCENTER_IS_CALLING_OUT_TO_AN_OBSERVER__ + 12
6 CoreFoundation 0x00007fff8f16c634 _CFXNotificationPost + 3140
7 Foundation 0x00007fff8fcf0aa1 -[NSNotificationCenter postNotificationName:object:userInfo:] + 66
8 CoreFoundation 0x00007fff8f27c45c __CFNOTIFICATIONCENTER_IS_CALLING_OUT_TO_AN_OBSERVER__ + 12
9 CoreFoundation 0x00007fff8f16c634 _CFXNotificationPost + 3140
10 Foundation 0x00007fff8fcf0aa1 -[NSNotificationCenter postNotificationName:object:userInfo:] + 66
11 AppKit 0x00007fff8ab3deb1 -[NSTextView(NSSharing) didChangeText] + 348
12 AppKit 0x00007fff8ab3b13b -[NSTextView insertText:replacementRange:] + 2827
13 AppKit 0x00007fff8ab3a237 -[NSTextInputContext(NSInputContext_WithCompletion) insertText:replacementRange:completionHandler:] + 98
14 AppKit 0x00007fff8abf8932 -[NSKeyBindingManager(NSKeyBindingManager_MultiClients) flushTextForClient:] + 178
15 AppKit 0x00007fff8b0fd2ef __61-[NSTextInputContext _handleEvent:options:completionHandler:]_block_invoke972 + 460
16 AppKit 0x00007fff8ab38bff -[NSTextInputContext(NSInputContext_WithCompletion) hasMarkedTextWithCompletionHandler:] + 76
17 AppKit 0x00007fff8ab50d03 __61-[NSTextInputContext _handleEvent:options:completionHandler:]_block_invoke_3 + 95
18 AppKit 0x00007fff8ab49ed8 -[NSTextInputContext tryHandleEvent_HasMarkedText_withDispatchCondition:dispatchWork:continuation:] + 101
19 AppKit 0x00007fff8b0fd074 __61-[NSTextInputContext _handleEvent:options:completionHandler:]_block_invoke960 + 321
20 HIToolbox 0x00007fff8c6f8d4f __TSMProcessRawKeyEventWithOptionsAndCompletionHandler_block_invoke_5 + 70
21 HIToolbox 0x00007fff8c6f52c0 SendTSMEvent_WithCompletionHandler + 501
22 HIToolbox 0x00007fff8c6f576c __SendUnicodeTextAEToUnicodeDoc_WithCompletionHandler_block_invoke + 400
23 HIToolbox 0x00007fff8c6f55a6 __SendFilterTextEvent_WithCompletionHandler_block_invoke + 189
24 HIToolbox 0x00007fff8c6f52c0 SendTSMEvent_WithCompletionHandler + 501
25 HIToolbox 0x00007fff8c6f508f SendFilterTextEvent_WithCompletionHandler + 236
26 HIToolbox 0x00007fff8c6f4d51 SendUnicodeTextAEToUnicodeDoc_WithCompletionHandler + 295
27 HIToolbox 0x00007fff8c6f4ae9 __utDeliverTSMEvent_WithCompletionHandler_block_invoke_2 + 296
28 HIToolbox 0x00007fff8c6f4988 __utDeliverTSMEvent_WithCompletionHandler_block_invoke + 437
29 HIToolbox 0x00007fff8c6f47cd TSMKeyEvent_WithCompletionHandler + 701
30 HIToolbox 0x00007fff8c6f44d0 __TSMProcessRawKeyEventWithOptionsAndCompletionHandler_block_invoke_4 + 251
31 HIToolbox 0x00007fff8c6f4386 __TSMProcessRawKeyEventWithOptionsAndCompletionHandler_block_invoke_3 + 330
32 HIToolbox 0x00007fff8c6f4112 __TSMProcessRawKeyEventWithOptionsAndCompletionHandler_block_invoke_2 + 259
33 HIToolbox 0x00007fff8c6f3f25 __TSMProcessRawKeyEventWithOptionsAndCompletionHandler_block_invoke + 251
34 HIToolbox 0x00007fff8c6d876f TSMProcessRawKeyEventWithOptionsAndCompletionHandler + 3068
35 AppKit 0x00007fff8b0fce86 __61-[NSTextInputContext _handleEvent:options:completionHandler:]_block_invoke949 + 131
36 AppKit 0x00007fff8ab36352 -[NSTextInputContext tryTSMProcessRawKeyEvent:dispatchCondition:setupForDispatch:furtherCondition:dispatchWork:continuation:] + 127
37 AppKit 0x00007fff8ab36085 -[NSTextInputContext _handleEvent:options:completionHandler:] + 1266
38 AppKit 0x00007fff8ab35b4e -[NSTextInputContext handleEvent:] + 109
39 AppKit 0x00007fff8ab35a54 -[NSView interpretKeyEvents:] + 207
40 AppKit 0x00007fff8ab3586a -[NSTextView keyDown:] + 695
41 AppKit 0x00007fff8b0250fb -[NSWindow _reallySendEvent:isDelayedEvent:] + 5452
42 AppKit 0x00007fff8a9b6c86 -[NSWindow sendEvent:] + 470
43 AppKit 0x00007fff8a9b38b1 -[NSApplication sendEvent:] + 4199
44 AppKit 0x00007fff8a8dcb68 -[NSApplication run] + 711
45 AppKit 0x00007fff8a859244 NSApplicationMain + 1832
46 addobserver_test 0x00000001000066cd main + 109
47 libdyld.dylib 0x00007fff91e0b5c9 start + 1
48 ??? 0x0000000000000003 0x0 + 3
)
The first question is, do I need the #objc in front of my selector? I do not believe this should be necessary as a NSViewController is a subclass of a NSObject and that appears to make #objc unnecessary. Is this correct?
What do I need to do to make this work?
I have a sample test project at:
https://github.com/ericgorr/addobserver_test
Thank you.
In your applicationDidFinishLaunching, you are not keeping a reference to the view controller, so the object is released immediately. Then a notification is being sent to another object which took its place in memory (a __NSCFString in this case).
You need to store a strong reference to your view controller, e.g. as an instance variable.
This one is quite weird. I recently upgraded to Mountain Lion on my dev machine and now every time I bring up the main project window of my app it crashes. The strange thing is that it only happens on 10.8.3 and it only happen if I sandbox the app. I have another test machine running 10.8.2 (also Mountain Lion) and the crash does not happen. Also, if I recreate the app without sandboxing it does not crash. This app is actually created with an implementation of common lisp the uses a cocoa bridge called CCL.
Here are some of the reports I get in the console when my app crashes:
4/19/13 11:30:15.605 AM AgentCubes[56676]: kCGErrorIllegalArgument: _getWindowRegion: Invalid window
4/19/13 11:30:15.606 AM AgentCubes[56676]: CGSSetWindowLevel: Invalid window 0x137c
4/19/13 11:30:15.607 AM AgentCubes[56676]: PSsetwindowlevel, error setting window level (1000)
4/19/13 11:30:15.607 AM AgentCubes[56676]: CGSClearWindowTags: Invalid window 0x137c
4/19/13 11:30:15.607 AM AgentCubes[56676]: CGSSetIgnoresCycle: error 1000 setting or clearing window tags
4/19/13 11:30:15.623 AM AgentCubes[56676]: *** Assertion failure in -[NativeScrollView scrollerImpPair:updateScrollerStyleForNewRecommendedScrollerStyle:], /SourceCache/AppKit/AppKit-1187.37/AppKit.subproj/NSScrollView.m:5402
4/19/13 11:30:15.623 AM AgentCubes[56676]: An uncaught exception was raised
4/19/13 11:30:15.624 AM AgentCubes[56676]: Invalid parameter not satisfying: scrollerImpPair == SCROLLER_IMP_PAIR
and the big trace:
4/19/13 11:30:15.626 AM AgentCubes[56676]: (
0 CoreFoundation 0x99cbee9b __raiseError + 219
1 libobjc.A.dylib 0x90a6552e objc_exception_throw + 230
2 CoreFoundation 0x99c1e6a8 +[NSException raise:format:arguments:] + 136
3 Foundation 0x93dfb814 -[NSAssertionHandler handleFailureInMethod:object:file:lineNumber:description:] + 116
4 AppKit 0x977cd7ab -[NSScrollView(NSPrivate) scrollerImpPair:updateScrollerStyleForNewRecommendedScrollerStyle:] + 150
5 AppKit 0x977cd6a5 +[NSScrollerImpPair _updateAllScrollerImpPairsForNewRecommendedScrollerStyle:] + 406
6 AppKit 0x977cd4ff +[NSScrollerImpPair _scrollerStyleRecommendationChanged:] + 159
7 Foundation 0x93e52152 __57-[NSNotificationCenter addObserver:selector:name:object:]_block_invoke_0 + 49
8 CoreFoundation 0x99c80861 ___CFXNotificationPost_block_invoke_0 + 257
9 CoreFoundation 0x99bcbe9a _CFXNotificationPost + 2794
10 Foundation 0x93e3ac88 -[NSNotificationCenter postNotificationName:object:userInfo:] + 92
11 AppKit 0x977cd3f5 -[_NSScrollerStyleRecommender setRecommendedScrollerStyleAndNotify:] + 248
12 AppKit 0x977cd2e3 __75-[_NSScrollerStyleRecommender scrollerStyleRecommendationUpdateTimerFired:]_block_invoke_0 + 43
13 AppKit 0x97eff42f __block_global_0 + 32
14 libdispatch.dylib 0x98f10f8f _dispatch_call_block_and_release + 15
15 libdispatch.dylib 0x98f0cc82 _dispatch_client_callout + 46
16 libdispatch.dylib 0x98f122e3 _dispatch_main_queue_callback_4CF + 223
17 CoreFoundation 0x99bbac39 __CFRunLoopRun + 1961
18 CoreFoundation 0x99bba02a CFRunLoopRunSpecific + 378
19 CoreFoundation 0x99bb9e9b CFRunLoopRunInMode + 123
20 HIToolbox 0x91e16f5a RunCurrentEventLoopInMode + 242
21 HIToolbox 0x91e16cc9 ReceiveNextEventCommon + 374
22 HIToolbox 0x91e16b44 BlockUntilNextEventMatchingListInMode + 88
23 AppKit 0x976e99aa _DPSNextEvent + 724
24 AppKit 0x976e91dc -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 119
25 AppKit 0x976df63c -[NSApplication run] + 855
26 AgentCubes 0x0001991d ffcall_return + 0
27 ??? 0x003cbf9c 0x0 + 3981212
28 ??? 0x003cbf9c 0x0 + 3981212
29 AgentCubes 0x00019f79 func_start + 94
30 AgentCubes 0x0001c52e main + 1310
31 AgentCubes 0x00033fb4 _start + 207
32 AgentCubes 0x00033ee4 start + 40
)
and finally:
4/19/13 11:30:15.627 AM AgentCubes[56676]: *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Invalid parameter not satisfying: scrollerImpPair == SCROLLER_IMP_PAIR'
*** Call stack at first throw:
(
0 CoreFoundation 0x99cbee9b __raiseError + 219
1 libobjc.A.dylib 0x90a6552e objc_exception_throw + 230
2 CoreFoundation 0x99c1e6a8 +[NSException raise:format:arguments:] + 136
3 Foundation 0x93dfb814 -[NSAssertionHandler handleFailureInMethod:object:file:lineNumber:description:] + 116
4 AppKit 0x977cd7ab -[NSScrollView(NSPrivate) scrollerImpPair:updateScrollerStyleForNewRecommendedScrollerStyle:] + 150
5 AppKit 0x977cd6a5 +[NSScrollerImpPair _updateAllScrollerImpPairsForNewRecommendedScrollerStyle:] + 406
6 AppKit 0x977cd4ff +[NSScrollerImpPair _scrollerStyleRecommendationChanged:] + 159
7 Foundation 0x93e52152 __57-[NSNotificationCenter addObserver:selector:name:object:]_block_invoke_0 + 49
8 CoreFoundation 0x99c80861 ___CFXNotificationPost_block_invoke_0 + 257
9 CoreFoundation 0x99bcbe9a _CFXNotificationPost + 2794
10 Foundation 0x93e3ac88 -[NSNotificationCenter postNotificationName:object:userInfo:] + 92
11 AppKit 0x977cd3f5 -[_NSScrollerStyleRecommender setRecommendedScrollerStyleAndNotify:] + 248
12 AppKit 0x977cd2e3 __75-[_NSScrollerStyleRecommender scrollerStyleRecommendationUpdateTimerFired:]_block_invoke_0 + 43
13 AppKit 0x97eff42f __block_global_0 + 32
14 libdispatch.dylib 0x98f10f8f _dispatch_call_block_and_release + 15
15 libdispatch.dylib 0x98f0cc82 _dispatch_client_callout + 46
16 libdispatch.dylib 0x98f122e3 _dispatch_main_queue_callback_4CF + 223
17 CoreFoundation 0x99bbac39 __CFRunLoopRun + 1961
18 CoreFoundation 0x99bba02a CFRunLoopRunSpecific + 378
19 CoreFoundation 0x99bb9e9b CFRunLoopRunInMode + 123
20 HIToolbox 0x91e16f5a RunCurrentEventLoopInMode + 242
21 HIToolbox 0x91e16cc9 ReceiveNextEventCommon + 374
22 HIToolbox 0x91e16b44 BlockUntilNextEventMatchingListInMode + 88
23 AppKit 0x976e99aa _DPSNextEvent + 724
24 AppKit 0x976e91dc -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 119
25 AppKit 0x976df63c -[NSApplication run] + 855
26 AgentCubes 0x0001991d ffcall_return + 0
27 ??? 0x003cbf9c 0x0 + 3981212
28 ??? 0x003cbf9c 0x0 + 3981212
29 AgentCubes 0x00019f79 func_start + 94
30 AgentCubes 0x0001c52e main + 1310
31 AgentCubes 0x00033fb4 _start + 207
32 AgentCubes 0x00033ee4 start + 40
)
I am very confused by all this and I am wondering what could have changed in 10.8.3 that interacts badly with the sandboxing?
When i scroll UIScrollView with iOS 5.1. It's works fine but when scroll with iOS 6.0 the app has crashed. But i do not error line code. this is exception fired:
2012-09-25 11:47:36.255 Attack[4515:c07] Stack Trace: (
0 CoreFoundation 0x0061802e __exceptionPreprocess + 206
1 libobjc.A.dylib 0x02c8de7e objc_exception_throw + 44
2 CoreFoundation 0x00617deb +[NSException raise:format:] + 139
3 QuartzCore 0x00a31a75 _ZN2CA5Layer10set_boundsERKNS_4RectEb + 213
4 QuartzCore 0x00a31d1e -[CALayer setBounds:] + 154
5 UIKit 0x0190e7a1 -[UIView(Geometry) setBounds:] + 336
6 UIKit 0x01920748 -[UIScrollView setBounds:] + 5493
7 UIKit 0x01920c9d -[UIScrollView setContentOffset:] + 728
8 UIKit 0x019275ec -[UIScrollView _updatePanGesture] + 2873
9 UIKit 0x0192b0e7 -[UIScrollView handlePan:] + 305
10 UIKit 0x01b9389a _UIGestureRecognizerSendActions + 139
11 UIKit 0x01b929db -[UIGestureRecognizer _updateGestureWithEvent:] + 333
12 UIKit 0x01b9411f -[UIGestureRecognizer _delayedUpdateGesture] + 46
13 UIKit 0x01b96d6d ___UIGestureRecognizerUpdate_block_invoke_0543 + 57
14 UIKit 0x01b96cec _UIGestureRecognizerRemoveObjectsFromArrayAndApplyBlocks + 331
15 UIKit 0x01b8ea68 _UIGestureRecognizerUpdate + 1348
16 UIKit 0x018fbfc2 -[UIWindow _sendGesturesForEvent:] + 1283
17 UIKit 0x018fc4a3 -[UIWindow sendEvent:] + 98
18 UIKit 0x018da3aa -[UIApplication sendEvent:] + 436
19 UIKit 0x018cbcf8 _UIApplicationHandleEvent + 9874
20 GraphicsServices 0x03045df9 _PurpleEventCallback + 339
21 GraphicsServices 0x03045ad0 PurpleEventCallback + 46
22 CoreFoundation 0x0058dbf5 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 53
23 CoreFoundation 0x0058d962 __CFRunLoopDoSource1 + 146
24 CoreFoundation 0x005bebb6 __CFRunLoopRun + 2118
25 CoreFoundation 0x005bdf44 CFRunLoopRunSpecific + 276
26 CoreFoundation 0x005bde1b CFRunLoopRunInMode + 123
27 GraphicsServices 0x030447e3 GSEventRunModal + 88
28 GraphicsServices 0x03044668 GSEventRun + 104
29 UIKit 0x018c965c UIApplicationMain + 1211
30 Attack 0x00002e7a main + 170
31 Attack 0x00002d85 start + 53
)
2012-09-25 11:47:36.256 Attack[4515:c07] *** Terminating app due to uncaught exception 'CALayerInvalidGeometry', reason: 'CALayer bounds contains NaN: [nan 0; 640 480]'
*** First throw call stack:
Does anyone know line code what is it mean? : -[UIScrollView setBounds:] + 5493.