iOS App(使用核心数据)更新后崩溃，但只有 App Store 版本

Question

我在使用 iOS 9.1 应用程序时遇到了一个严重问题:我已经更新了应用程序，在几台 iPhone 设备上成功测试了它，将它提交到了 App Store，Apple 审查并推出了该应用程序。该应用程序使用核心数据。

但是，问题在于，对于将其作为更新安装的用户，该应用程序在启动后立即崩溃。下面列出了崩溃报告，但是，我找不到它的真正问题(也因为并非所有内容都被符号化)。如果我直接通过 Xcode 在同一设备上运行它，该应用程序可以正常工作并且不会崩溃。

关于如何找到错误的任何想法？

非常感谢任何提示!

Incident Identifier: 82CFBBFB-D78F-45B8-B7B1-5CA927889673
CrashReporter Key:   b74b72673e3b94fca688b2e61a466eb9826dc424
Hardware Model:      iPhone7,1
Process:             MyAppName [826]
Path:                /private/var/mobile/Containers/Bundle/Application/13C779F5-8CEB-4815-AF64-18B08827CDEE/MyAppName.app/MyAppName
Identifier:          com.myappdomain.MyAppName
Version:             20151128 (1.4)
Code Type:           ARM-64 (Native)
Parent Process:      launchd [1]

Date/Time:           2015-12-02 07:07:58.58 +0100
Launch Time:         2015-12-02 07:07:57.57 +0100
OS Version:          iOS 9.1 (13B143)
Report Version:      105

Exception Type:  EXC_BAD_ACCESS (SIGSEGV)
Exception Subtype: KERN_INVALID_ADDRESS at 0x200000001576a714
Triggered by Thread:  0

Filtered syslog:
None found

Thread 0 name:  Dispatch queue: com.apple.main-thread
Thread 0 Crashed:
0   MyAppName                   0x0000000100071a64 0x100040000 + 203364
1   MyAppName                   0x00000001000721a0 0x100040000 + 205216
2   MyAppName                   0x0000000100071d2c 0x100040000 + 204076
3   MyAppName                   0x0000000100073624 0x100040000 + 210468
4   MyAppName                   0x00000001000718d8 0x100040000 + 202968
5   MyAppName                   0x0000000100071978 0x100040000 + 203128
6   MyAppName                   0x0000000100071a20 0x100040000 + 203296
7   MyAppName                   0x0000000100072848 0x100040000 + 206920
8   MyAppName                   0x0000000100072e08 0x100040000 + 208392
9   MyAppName                   0x000000010006c6f8 0x100040000 + 182008
10  MyAppName                   0x000000010006fe68 0x100040000 + 196200
11  MyAppName                   0x000000010006afdc 0x100040000 + 176092
12  UIKit                           0x00000001883f4654 -[UIViewController _setViewAppearState:isAnimating:] + 724
13  UIKit                           0x00000001884b45c8 -[UINavigationController viewDidAppear:] + 220
14  UIKit                           0x00000001883f4654 -[UIViewController _setViewAppearState:isAnimating:] + 724
15  UIKit                           0x00000001885239b8 -[UITabBarController viewDidAppear:] + 128
16  UIKit                           0x00000001883f4654 -[UIViewController _setViewAppearState:isAnimating:] + 724
17  UIKit                           0x00000001884654f0 __64-[UIViewController viewDidMoveToWindow:shouldAppearOrDisappear:]_block_invoke + 44
18  UIKit                           0x000000018846548c -[UIViewController _executeAfterAppearanceBlock] + 92
19  UIKit                           0x000000018868c674 _runAfterCACommitDeferredBlocks + 556
20  UIKit                           0x00000001886994bc _cleanUpAfterCAFlushAndRunDeferredBlocks + 92
21  CoreFoundation                  0x0000000182e0042c __CFRUNLOOP_IS_CALLING_OUT_TO_A_BLOCK__ + 20
22  CoreFoundation                  0x0000000182dffd64 __CFRunLoopDoBlocks + 308
23  CoreFoundation                  0x0000000182dfdcc8 __CFRunLoopRun + 708
24  CoreFoundation                  0x0000000182d2cca0 CFRunLoopRunSpecific + 384
25  GraphicsServices                0x000000018df68088 GSEventRunModal + 180
26  UIKit                           0x0000000188444ffc UIApplicationMain + 204
27  MyAppName                   0x00000001000581e4 0x100040000 + 98788
28  libdyld.dylib                   0x000000019824a8b8 start + 4

Thread 1 name:  Dispatch queue: com.apple.libdispatch-manager
Thread 1:
0   libsystem_kernel.dylib          0x00000001983684fc kevent_qos + 8
1   libdispatch.dylib               0x000000019822ca04 _dispatch_mgr_invoke + 232
2   libdispatch.dylib               0x000000019821b874 _dispatch_source_invoke + 0

Thread 2:
0   libsystem_kernel.dylib          0x0000000198367b6c __workq_kernreturn + 8
1   libsystem_pthread.dylib         0x000000019842d530 _pthread_wqthread + 1284
2   libsystem_pthread.dylib         0x000000019842d020 start_wqthread + 4

Thread 3:
0   libsystem_kernel.dylib          0x0000000198367b6c __workq_kernreturn + 8
1   libsystem_pthread.dylib         0x000000019842d530 _pthread_wqthread + 1284
2   libsystem_pthread.dylib         0x000000019842d020 start_wqthread + 4

Thread 4:
0   libsystem_kernel.dylib          0x0000000198367b6c __workq_kernreturn + 8
1   libsystem_pthread.dylib         0x000000019842d530 _pthread_wqthread + 1284
2   libsystem_pthread.dylib         0x000000019842d020 start_wqthread + 4

Thread 5:
0   libsystem_kernel.dylib          0x0000000198367b6c __workq_kernreturn + 8
1   libsystem_pthread.dylib         0x000000019842d530 _pthread_wqthread + 1284
2   libsystem_pthread.dylib         0x000000019842d020 start_wqthread + 4

Thread 6:
0   libsystem_kernel.dylib          0x0000000198367b6c __workq_kernreturn + 8
1   libsystem_pthread.dylib         0x000000019842d530 _pthread_wqthread + 1284
2   libsystem_pthread.dylib         0x000000019842d020 start_wqthread + 4

Thread 0 crashed with ARM Thread State (64-bit):
    x0: 0x00000001576a7350   x1: 0x000000015769c200   x2: 0x0000000000000000   x3: 0x0000000100071a40
    x4: 0x000000016fdbdf60   x5: 0x000000016fdbdf68   x6: 0x0000000000000000   x7: 0x0000000000000004
    x8: 0x200000001576a69c   x9: 0x0000000000000018  x10: 0x0000000000000000  x11: 0x0000000300000003
   x12: 0x000000015755f2f0  x13: 0x0000000000003fff  x14: 0xffffffffffffc000  x15: 0x0000000000003fff
   x16: 0x000000010027da54  x17: 0x0000000182e438dc  x18: 0x0000000000000000  x19: 0x000000015769c200
   x20: 0x00000001576a7350  x21: 0x000000016fdbe260  x22: 0x000000015769c200  x23: 0x000000015769c200
   x24: 0x000000015769ccd0  x25: 0x000000015808fc20  x26: 0x000000010006ff58  x27: 0x000000016fdbe198
   x28: 0x0000000000000002  fp: 0x000000016fdbe060   lr: 0x00000001000721a0
    sp: 0x000000016fdbe020   pc: 0x0000000100071a64 cpsr: 0x20000000

Answer 1

以防其他人遇到此问题:
这个问题实际上是 Swift 的数组实现中的一个错误。以下代码在 Release模式下崩溃:
myarr.sortInPlace($0.date < $1.date)
但是，这段代码工作得很好:
myarr = myarr.sort($0.date < $1.date)
有关此问题的更多信息(希望 Apple 很快解决)可以在这里找到:
https://forums.developer.apple.com/thread/23455