我想知道是否有人可以提供一些有关导致此SIGTRAP发生的信息。如果有人也可以提供关于我可以从这里做什么来更好地调试的建议，那将非常感激，因为我无法可靠地复制它。
Hardware Model: iPad mini 3 (iPad4,8)
Process: SceneDoc [330]
Path: /private/var/mobile/Containers/Bundle/Application/1CB3551A-24A3-4FA8-B2ED-8AF993F7DA43/SceneDoc.app/SceneDoc
Identifier: com.scenedoc.SceneDocAppAppStore
Code Type: arm64
Parent Process: launchd [1]
Date/Time: 2015-03-23 15:42:57 +0000
Launch Time: 2015-03-23 15:42:57 +0000
OS Version: iOS 8.2 (12D508)
Exception Type: SIGTRAP
Crashed Thread: 0
Application Specific Information:
*** Terminating app due to uncaught exception 'SIGTRAP', reason: ''
Thread 0 Crashed:
0 CoreFoundation 0x185629750 _CFHash + 22352
1 CoreFoundation 0x185625d44 _CFBasicHashFindBucket + 7492
2 CoreFoundation 0x185625900 _CFDictionaryGetValue + 6400
3 CoreFoundation 0x1856d6658 [CFPrefsPlistSource alreadylocked_setValue:forKey:] + 730712
4 CoreFoundation 0x185784830 [CFPrefsSource setValue:forKey:] + 1443888
5 CoreFoundation 0x185783dc8 [CFPrefsSource withSourceForIdentifier:user:byHost:container:perform:] + 1441224
6 CoreFoundation 0x185787658 __CFPreferencesSetValueWithContainer + 1455704
7 Foundation 0x18656b600 [NSUserDefaults(NSUserDefaults) setObject:forKey:] + 128512
8 SceneDoc 0x10025673c [Prefs savePrefs] (Prefs.m:503)
9 SceneDoc 0x100259e0c [Prefs setLogoutDuration] (Prefs.m:2067)
10 SceneDoc 0x10014a518 [SDCThriftGCDManager refreshToken:] (SDCThriftGCDManager.m:484)
11 UIKit 0x18a1e2444 [UIApplication workspaceNoteAssertionExpirationImminent:] + 2729028
12 FrontBoardServices 0x18db31604 ___31-[FBSSerialQueue (performAsync:0)
13 CoreFoundation 0x185702d70 ___CFRUNLOOP_IS_CALLING_OUT_TO_A_BLOCK__ + 912752
14 CoreFoundation 0x185701e78 ___CFRunLoopDoBlocks + 908920
15 CoreFoundation 0x18570049c ___CFRunLoopRun + 902300
16 CoreFoundation 0x18562d1f4 _CFRunLoopRunSpecific + 37364
17 GraphicsServices 0x18e9776fc _GSEventRunModal + 46844
18 UIKit 0x189fbe10c _UIApplicationMain + 483596
19 SceneDoc 0x1000ceae4 main (main.m:12)
20 libdyld.dylib 0x196faaa08 _start + 10760
Thread 1:
0 libsystem_kernel.dylib 0x1970a8c24 _kevent64 + 3108
1 libdispatch.dylib 0x196f7f99c __dispatch_source_invoke + 14748
Thread 2:
0 libsystem_kernel.dylib 0x1970a8e0c _mach_msg_trap + 3596
1 CoreFoundation 0x185702218 ___CFRunLoopServiceMachPort + 909848
2 CoreFoundation 0x18570016c ___CFRunLoopRun + 901484
3 CoreFoundation 0x18562d1f4 _CFRunLoopRunSpecific + 37364
4 CoreFoundation 0x18567f370 _CFRunLoopRun + 373616
5 CoreMotion 0x18602fe14 0x185fe8000 + 294420
6 libsystem_pthread.dylib 0x19715fdc8 __pthread_body + 15816
7 libsystem_pthread.dylib 0x19715fd24 __pthread_body + 15652
8 libsystem_pthread.dylib 0x19715cef8 _thread_start + 3832
Thread 3:
0 libsystem_kernel.dylib 0x1970a8e0c _mach_msg_trap + 3596
1 CoreFoundation 0x185702218 ___CFRunLoopServiceMachPort + 909848
2 CoreFoundation 0x18570016c ___CFRunLoopRun + 901484
3 CoreFoundation 0x18562d1f4 _CFRunLoopRunSpecific + 37364
4 CFNetwork 0x18512e2a4 [NSURLConnection(Loader) _resourceLoadLoop:] + 647844
5 Foundation 0x186642308 ___NSThread__main__ + 1008392
6 libsystem_pthread.dylib 0x19715fdc8 __pthread_body + 15816
7 libsystem_pthread.dylib 0x19715fd24 __pthread_body + 15652
8 libsystem_pthread.dylib 0x19715cef8 _thread_start + 3832
Thread 4:
0 libsystem_kernel.dylib 0x1970c3498 _select$DARWIN_EXTSN + 111768
1 libsystem_pthread.dylib 0x19715fdc8 __pthread_body + 15816
2 libsystem_pthread.dylib 0x19715fd24 __pthread_body + 15652
3 libsystem_pthread.dylib 0x19715cef8 _thread_start + 3832
Thread 5:
0 libsystem_kernel.dylib 0x1970c3c78 ___workq_kernreturn + 113784
1 libsystem_pthread.dylib 0x19715cef0 _start_wqthread + 3824
Thread 6:
0 libsystem_kernel.dylib 0x1970c3c78 ___workq_kernreturn + 113784
1 libsystem_pthread.dylib 0x19715cef0 _start_wqthread + 3824
Thread 0 crashed with arm64 Thread state:
cpsr: 0x60000000 fp: 0x16fd7a0a0 lr: 0x185625d44 pc: 0x185629750
sp: 0x16fd7a090 x0: 0 x1: 0 x10: 0x1
x11: 0 x12: 0x13e00ceb0 x13: 0x61a5975c10e9 x14: 0x5cd61a0d8643
x15: 0x8c x16: 0x19692a4d8 x17: 0x1856d65bc x18: 0
x19: 0 x2: 0x17425fce0 x20: 0x174266f00 x21: 0
x22: 0x16fd7a1f0 x23: 0x17007ffc0 x24: 0x1975c8750 x25: 0x1975cb9c0
x26: 0x19b0d80a8 x27: 0x19b0d4088 x28: 0 x3: 0
x4: 0x16fd7a2c8 x5: 0x2a x6: 0x2a x7: 0
x8: 0x5 x9: 0x185629650
答案 0 :(得分：0)
问题似乎源于我的密钥，当它试图在NSUserDefaults中设置对象时，某种程度上是nil。有趣的是，它不会在模拟器中崩溃。