如何理解這個崩潰報告？ SIGSEGV

我最近經常碰到這個崩潰，設備iPhone 5s，SDk：9.1 我似乎無法重現此錯誤。日誌取自第三方墜毀記者（Testfairy）。如何理解這個崩潰報告？ SIGSEGV

這很煩人，我想不出什麼原因引起的..

Crashed Thread: 14 
0 libobjc.A.dylib      0x19a6f1bdc objc_msgSend (in libobjc.A.dylib) + 28 
1 Foundation       0x186bd68d4 _writeJSONValue (in Foundation) + 96 
2 Foundation       0x186bd8cc0 ___writeJSONObject_block_invoke (in Foundation) + 236 
3 CoreFoundation      0x185b6e4f4 __65-[__NSDictionaryI enumerateKeysAndObjectsWithOptions:usingBlock:]_block_invoke (in CoreFoundation) + 88 
4 CoreFoundation      0x185b5c198 -[__NSDictionaryI enumerateKeysAndObjectsWithOptions:usingBlock:] (in CoreFoundation) + 224 
5 Foundation       0x186bd844c _writeJSONObject (in Foundation) + 360 
6 Foundation       0x186bd69fc _writeJSONValue (in Foundation) + 392 
7 Foundation       0x186bd8ea8 ___writeJSONArray_block_invoke (in Foundation) + 144 
8 CoreFoundation      0x185b13990 __53-[__NSArrayM enumerateObjectsWithOptions:usingBlock:]_block_invoke (in CoreFoundation) + 132 
9 CoreFoundation      0x185b13828 -[__NSArrayM enumerateObjectsWithOptions:usingBlock:] (in CoreFoundation) + 212 
10 Foundation       0x186bd86a8 _writeJSONArray (in Foundation) + 300 
11 Foundation       0x186bd6a9c _writeJSONValue (in Foundation) + 552 
12 Foundation       0x186bd8cc0 ___writeJSONObject_block_invoke (in Foundation) + 236 
13 CoreFoundation      0x185b6e4f4 __65-[__NSDictionaryI enumerateKeysAndObjectsWithOptions:usingBlock:]_block_invoke (in CoreFoundation) + 88 
14 CoreFoundation      0x185b5c198 -[__NSDictionaryI enumerateKeysAndObjectsWithOptions:usingBlock:] (in CoreFoundation) + 224 
15 Foundation       0x186bd844c _writeJSONObject (in Foundation) + 360 
16 Foundation       0x186bd69fc _writeJSONValue (in Foundation) + 392 
17 Foundation       0x186bd682c -[_NSJSONWriter dataWithRootObject:options:error:] (in Foundation) + 140 
18 Foundation       0x186bd7888 +[NSJSONSerialization dataWithJSONObject:options:error:] (in Foundation) + 348 
19 MyApp        0x1003721e8 -[TestFairyCommunicator sendEvents:toServer:withSession:] (in MyApp) (TestFairyCommunicator.m:219) 
20 MyApp        0x10036fa70 -[TestFairy send:events:] (in MyApp) (TestFairy.m:1260) 
21 MyApp        0x100369394 -[TFEventsTracker sendEvents] (in MyApp) (TFEventsTracker.m:66) 
22 MyApp        0x10036e32c -[TestFairy checkForegroundViewController] (in MyApp) (TestFairy.m:924) 
23 MyApp        0x10036df34 -[TestFairy collectMetrics] (in MyApp) (TestFairy.m:886) 
24 Foundation       0x186b5fc80 __NSThread__start__ (in Foundation) + 1000 
25 libsystem_pthread.dylib    0x19b113b28 _pthread_body (in libsystem_pthread.dylib) + 156 
26 libsystem_pthread.dylib    0x19b113a8c _pthread_body (in libsystem_pthread.dylib) + 0 
27 libsystem_pthread.dylib    0x19b111028 thread_start (in libsystem_pthread.dylib) + 4

你有什麼原因導致這個崩潰的任何想法？

來源

2017-02-16 Zakaria

正在做任何JSON序列化？ –

@JacobKing是的。問題是，我無法找出究竟是哪裏崩潰。在應用程序中有很多JSON序列化。 – Zakaria

您是否嘗試過異常中斷點？ – Himanth

將斷點這裏TestFairyCommunicator.m:219，並檢查您的活動數據結構健全：

頂級對象是一個NSArray或NSDictionary的。
所有對象都是NSString，NSNumber，NSArray，NSDictionary或NSNull的實例。
所有的字典鍵都是NSString的實例。
數字不是NaN或無窮大。

直接引用：https://developer.apple.com/reference/foundation/nsjsonserialization

來源

2017-02-16 08:51:51 norders

我不能在Testfairy類中放置斷點，它是崩潰報告的第三方庫。我似乎無法重現此錯誤，它只發生在使用iPhone 5s SDK的用戶：9.1。它甚至沒有在模擬器或其他設備上崩潰。 – Zakaria

如何理解這個崩潰報告？ SIGSEGV

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