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我在關閉設備上的視圖控制器時發生了EXC_BAD_ACCESS錯誤。 但奇怪的是，這在模擬器中不會發生。EXC_BAD_ACCESS，使用NSZombies追蹤
問題：我正在使用儀器和NSZombies啓用，這裏是錯誤報告。我沒有得到正面和反面的理解。我明白這顯示了參考Count + es和-es。但是，我的代碼在哪裏產生了這個錯誤？我所看到的是，負責的來電者是UIVIew s，CATransaction s，我的代碼在哪裏？ 
崩潰日誌
Thread 0:
0 libsystem_kernel.dylib 0x00000001923d5cc0 mach_msg_trap + 8
1 CoreFoundation 0x0000000185992ca8 __CFRunLoopServiceMachPort + 180
2 CoreFoundation 0x0000000185990e9c __CFRunLoopRun + 932
3 CoreFoundation 0x00000001858d1b34 CFRunLoopRunSpecific + 448
4 itunesstored 0x00000001000bfe14 0x1000b0000 + 65044
5 libdyld.dylib 0x00000001922f3a9c start + 0
Thread 1:
0 libsystem_kernel.dylib 0x00000001923d5ac8 kevent64 + 8
1 libdispatch.dylib 0x00000001922d9d74 _dispatch_mgr_thread + 48
Thread 2 name: com.apple.NSURLConnectionLoader
Thread 2:
0 libsystem_kernel.dylib 0x00000001923d5cc0 mach_msg_trap + 8
1 CoreFoundation 0x0000000185992ca8 __CFRunLoopServiceMachPort + 180
2 CoreFoundation 0x0000000185990e38 __CFRunLoopRun + 832
3 CoreFoundation 0x00000001858d1b34 CFRunLoopRunSpecific + 448
4 Foundation 0x00000001864be7f8 +[NSURLConnection(Loader) _resourceLoadLoop:] + 344
5 Foundation 0x000000018654c76c __NSThread__main__ + 996
6 libsystem_pthread.dylib 0x00000001924701ac _pthread_body + 164
7 libsystem_pthread.dylib 0x0000000192470104 _pthread_start + 136
8 libsystem_pthread.dylib 0x000000019246d7ac thread_start + 0
Thread 3 name: com.apple.CFSocket.private
Thread 3:
0 libsystem_kernel.dylib 0x00000001923ee76c select$DARWIN_EXTSN + 8
1 libsystem_pthread.dylib 0x00000001924701ac _pthread_body + 164
2 libsystem_pthread.dylib 0x0000000192470104 _pthread_start + 136
3 libsystem_pthread.dylib 0x000000019246d7ac thread_start + 0
Thread 4:
0 libsystem_kernel.dylib 0x00000001923ee394 __psynch_cvwait + 8
1 MobileSystemServices 0x000000018bc8d53c MOXPCTransportReceiveMessage + 268 2 MobileInstallation 0x000000018bc48900 perform_command + 280
3 MobileInstallation 0x000000018bc491e8 MobileInstallationLookup + 388
4 itunesstored 0x00000001000e985c 0x1000b0000 + 235612
5 libdispatch.dylib 0x00000001922d841c _dispatch_call_block_and_release + 20
6 libdispatch.dylib 0x00000001922d83dc _dispatch_client_callout + 12
7 libdispatch.dylib 0x00000001922df3f8 _dispatch_root_queue_drain + 396
8 libdispatch.dylib 0x00000001922df634 _dispatch_worker_thread2 + 72
9 libsystem_pthread.dylib 0x000000019246d914 _pthread_wqthread + 352
10 libsystem_pthread.dylib 0x000000019246d7a4 start_wqthread + 0
Thread 5:
0 libsystem_kernel.dylib 0x00000001923eee74 __workq_kernreturn + 8
1 libsystem_pthread.dylib 0x000000019246d7a4 start_wqthread + 0
Thread 6:
0 libsystem_kernel.dylib 0x00000001923d5cc0 mach_msg_trap + 8
1 CoreFoundation 0x0000000185992ca8 __CFRunLoopServiceMachPort + 180
2 CoreFoundation 0x0000000185990e38 __CFRunLoopRun + 832
3 CoreFoundation 0x00000001858d1b34 CFRunLoopRunSpecific + 448
4 iTunesStore 0x00000001903c2a58 -[ISOperation runRunLoopUntilStopped] + 200
5 iTunesStore 0x00000001903c9f84 -[ISURLOperation _runRequestWithURL:] + 1256
6 iTunesStore 0x00000001903c9a30 -[ISURLOperation _run] + 428
7 iTunesStore 0x00000001903c5588 -[ISURLOperation run] + 328
8 iTunesStore 0x00000001903d2324 -[ISStoreURLOperation _runURLOperation] + 696
9 iTunesStore 0x00000001903d0b68 -[ISStoreURLOperation run] + 568
10 iTunesStore 0x00000001903c4214 -[ISOperation _main:] + 304
11 iTunesStore 0x00000001903c35cc -[ISOperation main] + 548
12 iTunesStore 0x00000001903c2b94 -[ISOperation runSubOperation:returningError:] + 220
13 iTunesStore 0x00000001903ce928 -[ISLoadURLBagOperation run] + 884
14 iTunesStore 0x00000001903c4214 -[ISOperation _main:] + 304
15 iTunesStore 0x00000001903c35cc -[ISOperation main] + 548
16 iTunesStore 0x00000001903c2b94 -[ISOperation runSubOperation:returningError:] + 220
17 iTunesStore 0x00000001903d1f74 -[ISStoreURLOperation _resolvedURLInBagContext:URLBag:] + 104
18 iTunesStore 0x00000001903d20e4 -[ISStoreURLOperation _runURLOperation] + 120
19 iTunesStore 0x00000001903d0b68 -[ISStoreURLOperation run] + 568
20 iTunesStore 0x00000001903c4214 -[ISOperation _main:] + 304
21 iTunesStore 0x00000001903c35cc -[ISOperation main] + 548
22 Foundation 0x0000000186474d34 -[__NSOperationInternal _start:] + 640
23 Foundation 0x0000000186536d78 __NSOQSchedule_f + 72
24 libdispatch.dylib 0x00000001922d83dc _dispatch_client_callout + 12
25 libdispatch.dylib 0x00000001922dd92c _dispatch_async_redirect_invoke + 148
26 libdispatch.dylib 0x00000001922d83dc _dispatch_client_callout + 12
27 libdispatch.dylib 0x00000001922df3f8 _dispatch_root_queue_drain + 396
28 libdispatch.dylib 0x00000001922df634 _dispatch_worker_thread2 + 72
29 libsystem_pthread.dylib 0x000000019246d914 _pthread_wqthread + 352
30 libsystem_pthread.dylib 0x000000019246d7a4 start_wqthread + 0
Thread 7 name: Data corruption: Malformed Mach message or kernel bug.
Thread 7 Crashed:
0 libxpc.dylib 0x0000000192488f9c _xpc_connection_mach_event + 1992
1 libdispatch.dylib 0x00000001922d84b0 _dispatch_client_callout4 + 12
2 libdispatch.dylib 0x00000001922dabdc _dispatch_mach_msg_invoke + 148
3 libdispatch.dylib 0x00000001922de698 _dispatch_queue_drain + 456
4 libdispatch.dylib 0x00000001922da620 _dispatch_mach_invoke + 104
5 libdispatch.dylib 0x00000001922dd8d0 _dispatch_async_redirect_invoke + 56
6 libdispatch.dylib 0x00000001922d83dc _dispatch_client_callout + 12
7 libdispatch.dylib 0x00000001922df3f8 _dispatch_root_queue_drain + 396
8 libdispatch.dylib 0x00000001922df634 _dispatch_worker_thread2 + 72
9 libsystem_pthread.dylib 0x000000019246d914 _pthread_wqthread + 352
10 libsystem_pthread.dylib 0x000000019246d7a4 start_wqthread + 0
Thread 8:
0 libsystem_kernel.dylib 0x00000001923ee3dc __psynch_mutexwait + 8
1 Foundation 0x000000018645b958 -[NSLock lock] + 152
2 iTunesStore 0x00000001903e7760 ISUniqueOperationLock + 228
3 iTunesStore 0x00000001903c3408 -[ISOperation main] + 96
4 iTunesStore 0x00000001903c2b94 -[ISOperation runSubOperation:returningError:] + 220
5 iTunesStore 0x00000001903cf438 -[ISOperation(ISLoadURLBagAdditions) loadURLBagWithContext:returningError:] + 112
6 itunesstored 0x00000001001046e0 0x1000b0000 + 345824
7 iTunesStore 0x00000001903c4214 -[ISOperation _main:] + 304
8 iTunesStore 0x00000001903c35cc -[ISOperation main] + 548
9 Foundation 0x0000000186474d34 -[__NSOperationInternal _start:] + 640
10 Foundation 0x0000000186536d78 __NSOQSchedule_f + 72
11 libdispatch.dylib 0x00000001922d83dc _dispatch_client_callout + 12
12 libdispatch.dylib 0x00000001922dd92c _dispatch_async_redirect_invoke + 148
13 libdispatch.dylib 0x00000001922d83dc _dispatch_client_callout + 12
14 libdispatch.dylib 0x00000001922df3f8 _dispatch_root_queue_drain + 396
15 libdispatch.dylib 0x00000001922df634 _dispatch_worker_thread2 + 72
16 libsystem_pthread.dylib 0x000000019246d914 _pthread_wqthread + 352
17 libsystem_pthread.dylib 0x000000019246d7a4 start_wqthread + 0
Thread 9:
0 libsystem_kernel.dylib 0x00000001923eee74 __workq_kernreturn + 8
1 libsystem_pthread.dylib 0x000000019246d7a4 start_wqthread + 0
Thread 10:
0 libsystem_kernel.dylib 0x00000001923eee74 __workq_kernreturn + 8
1 libsystem_pthread.dylib 0x000000019246d7a4 start_wqthread + 0
Thread 7 crashed with ARM Thread State (64-bit):
x0: 0x0000000000000036 x1: 0x0000000000000037 x2: 0x00000001924a516e x3: 0x0000000000000037
x4: 0x0000000102263bc8 x5: 0x0000000000000036 x6: 0x0000000000000000 x7: 0x0000000000000110
x8: 0x7300ae44061c0155 x9: 0x7300ae44061c0155 x10: 0x0000000102263bc8 x11: 0x0000000000000000
x12: 0x000000000000006f x13: 0x000000019239e3d1 x14: 0x000000000000005f x15: 0x000000019239be4b
x16: 0x0000000192468e90 x17: 0x0021c35bf1cc0111 x18: 0x0000000000000000 x19: 0x0000000147db6140
x20: 0x0000000147e999f0 x21: 0x0000000147e34d80 x22: 0x000000001000000c x23: 0x0000000147d8aa00
x24: 0x00000001022640e0 x25: 0x0000000147d436d0 x26: 0x0000000000020001 x27: 0x000000000000000a
x28: 0x00000001022640e0 fp: 0x0000000102263d50 lr: 0x0000000192488f9c sp: 0x0000000102263c80
pc: 0x0000000192488f9c cpsr: 0x60000000
也許是一個好主意，還包括崩潰日誌，尤其是棧回溯部分，因爲這會給我們一個線索，代碼實際崩潰。 – alastair
崩潰日誌對於解決您的問題更重要 – Ekra
@alastair我可以從哪裏獲得此崩潰日誌（設備日誌？）和堆棧backtracePart？ – BangOperator