ios - EXC_BAD_ACCESS > KERN_PROTECTION_FAILURE

Question

我的 iPhone 应用程序崩溃了，我从 Crashlytics(iPhone 5C，iOS 7.1.1)获得了以下堆栈跟踪。它持续了 500 多行，我在任何地方都看不到任何引用我的代码的内容。有什么方法可以调试它吗？

Crashed: com.apple.root.default-priority EXC_BAD_ACCESS KERN_PROTECTION_FAILURE at 0x04fccfe0

1. libsystem_c.dylib __vfprintf + 29
2. libsystem_c.dylib __v2printf + 374
3. libsystem_c.dylib __v2printf + 374
4. libsystem_c.dylib _vsnprintf + 348
5. libsystem_c.dylib vsnprintf + 72
6. libsystem_c.dylib __snprintf_chk + 22
7. Foundation _writeJSONNumber + 1040
8. Foundation _writeJSONValue + 452
9. Foundation ___writeJSONArray_block_invoke + 100
10. CoreFoundation__53-[__NSArrayM enumerateObjectsWithOptions:usingBlock:]_block_invoke + 90
11. CoreFoundation -[__NSArrayM enumerateObjectsWithOptions:usingBlock:] + 232
12. Foundation _writeJSONArray + 236
13. Foundation _writeJSONValue + 504
14. Foundation ___writeJSONArray_block_invoke + 100
15. CoreFoundation __53-[__NSArrayM enumerateObjectsWithOptions:usingBlock:]_block_invoke + 90
16. CoreFoundation -[__NSArrayM enumerateObjectsWithOptions:usingBlock:] + 232
17. Foundation _writeJSONArray + 236
18. Foundation _writeJSONValue + 504
19. Foundation ___writeJSONArray_block_invoke + 100
20. CoreFoundation __53-[__NSArrayM enumerateObjectsWithOptions:usingBlock:]_block_invoke + 90
21. CoreFoundation -[__NSArrayM enumerateObjectsWithOptions:usingBlock:] + 232
22. Foundation _writeJSONArray + 236
23. Foundation _writeJSONValue + 504
24. Foundation ___writeJSONArray_block_invoke + 100
25. CoreFoundation __53-[__NSArrayM enumerateObjectsWithOptions:usingBlock:]_block_invoke + 90
26. CoreFoundation -[__NSArrayM enumerateObjectsWithOptions:usingBlock:] + 232

...

Answer 1

这是由于堆栈溢出导致的崩溃，请参阅重复序列:

Foundation _writeJSONArray + 236
Foundation _writeJSONValue + 504
Foundation ___writeJSONArray_block_invoke + 100
CoreFoundation __53-[__NSArrayM enumerateObjectsWithOptions:usingBlock:]_block_invoke + 90
CoreFoundation -[__NSArrayM enumerateObjectsWithOptions:usingBlock:] + 232

看起来您正在某处将数组写入 JSON 结构，而您的代码最终陷入无限循环。

您自己的代码未显示在堆栈跟踪中，因为堆栈跟踪变得太大(堆栈溢出)并且这些帧被从历史记录中推出。