Strange iOS tableView/CALayer crashes

My app started crashing after long time in background right when I launch it again. The problem of course is when it wasn't killed - only when it was in the background.

the log is:

Exception Type:  EXC_CRASH (SIGABRT)
Exception Codes: 0x00000000, 0x00000000
Crashed Thread:  0

Thread 0 name:  Dispatch queue: com.apple.main-thread
Thread 0 Crashed:
0   libsystem_kernel.dylib          0x32858a1c __pthread_kill + 8
1   libsystem_c.dylib               0x337013b4 pthread_kill + 52
2   libsystem_c.dylib               0x336f9bf8 abort + 72
3   libstdc++.6.dylib               0x30504a64 __gnu_cxx::__verbose_terminate_handler() + 376
4   libobjc.A.dylib                 0x3068f06c _objc_terminate + 104
5   libstdc++.6.dylib               0x30502e36 __cxxabiv1::__terminate(void (*)()) + 46
6   libstdc++.6.dylib               0x30502e8a std::terminate() + 10
7   libstdc++.6.dylib               0x30502f5a __cxa_throw + 78
8   libobjc.A.dylib                 0x3068dc84 objc_exception_throw + 64
9   CoreFoundation                  0x3351048a +[NSException raise:format:arguments:] + 62
10  Foundation                      0x326ea56c -[NSAssertionHandler handleFailureInMethod:object:file:lineNumber:description:] + 56
11  UIKit                           0x31bc3a82 -[UITableView(UITableViewInternal) _createPreparedCellForGlobalRow:withIndexPath:] + 666
12  UIKit                           0x31bc3764 -[UITableView(UITableViewInternal) _createPreparedCellForGlobalRow:] + 28
13  UIKit                           0x31bbc0c6 -[UITableView(_UITableViewPrivate) _updateVisibleCellsNow:] + 930
14  UIKit                           0x31bbb276 -[UITableView layoutSubviews] + 134
15  UIKit                           0x31b675f4 -[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 20
16  CoreFoundation                  0x3347defc -[NSObject(NSObject) performSelector:withObject:] + 16
17  QuartzCore                      0x33351bae -[CALayer layoutSublayers] + 114
18  QuartzCore                      0x33351966 CALayerLayoutIfNeeded + 178
19  QuartzCore                      0x333571be CA::Context::commit_transaction(CA::Transaction*) + 206
20  QuartzCore                      0x33356fd0 CA::Transaction::commit() + 184
21  QuartzCore                      0x3335004e CA::Transaction::observer_callback(__CFRunLoopObserver*, unsigned long, void*) + 50
22  CoreFoundation                  0x334e7a2e __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 10
23  CoreFoundation                  0x334e945e __CFRunLoopDoObservers + 406
24  CoreFoundation                  0x334ea754 __CFRunLoopRun + 848
25  CoreFoundation                  0x3347aebc CFRunLoopRunSpecific + 224
26  CoreFoundation                  0x3347adc4 CFRunLoopRunInMode + 52
27  GraphicsServices                0x311a5418 GSEventRunModal + 108
28  GraphicsServices                0x311a54c4 GSEventRun + 56
29  UIKit                           0x31b90d62 -[UIApplication _run] + 398
30  UIKit                       开发者_如何转开发    0x31b8e800 UIApplicationMain + 664
31  Vento                           0x00002c64 main (main.m:14)
32  Vento                           0x00002c0c start + 32

Any idea where to start digging?

Thank you!

Look at the log to see the exception detail.

Run the static code analyzer over your code. It may find the bug for you.