iOS应用程序在后台崩溃

我需要帮助

我正在开发一个用Objective-c编写的旧iOS应用程序。它于2014年发布，现在我已经将该项目迁移到Xcode 8。迁移后，一切正常，除了应用程序在后台时出现奇怪的崩溃（不是立即，而是一段时间后）。调试很困难，因为只有当设备与Xcode断开连接时才会发生崩溃。我查看了设备日志，似乎是核心数据崩溃：

Incident Identifier: BDD70C46-6573-44A7-85AB-620E6FBA207F
CrashReporter Key:   c04f591f9e0cc9d1991ce10e33ebcabd56affbe6
Hardware Model:      iPhone8,4
Process:             myApp [17746]
Path:                /private/var/containers/Bundle/Application/878DB803-1DA5-46D7-8B50-655D43A5C28D/myApp.app/myApp
Identifier:          com.example.myApp
Version:             2 (1.0.2)
Code Type:           ARM-64 (Native)
Role:                Foreground
Parent Process:      launchd [1]
Coalition:           com.example.myApp [16959]


Date/Time:           2017-09-19 14:34:57.1435 +0300
Launch Time:         2017-09-19 14:31:38.0853 +0300
OS Version:          iPhone OS 10.3.3 (14G60)
Report Version:      104

Exception Type:  EXC_CRASH (SIGKILL)
Exception Codes: 0x0000000000000000, 0x0000000000000000
Exception Note:  EXC_CORPSE_NOTIFY
Termination Reason: Namespace <0xF>, Code 0x8badf00d
Triggered by Thread:  0

Filtered syslog:
None found

Thread 0 name:  Dispatch queue: SQLQueue 0x100724310 for myApp.sqlite
Thread 0 Crashed:
0   libsqlite3.dylib                0x000000018f36d818 0x18f361000 + 51224
1   libsqlite3.dylib                0x000000018f36c9a4 0x18f361000 + 47524
2   libsqlite3.dylib                0x000000018f36c9a4 0x18f361000 + 47524
3   libsqlite3.dylib                0x000000018f36c2c4 0x18f361000 + 45764
4   libsqlite3.dylib                0x000000018f36bf24 0x18f361000 + 44836
5   CoreData                        0x000000019113e0b0 -[NSSQLiteConnection prepareSQLStatement:] + 468
6   CoreData                        0x000000019125f178 -[NSSQLiteConnection updateRow:forRequestContext:] + 492
7   CoreData                        0x0000000191307f28 _writeChangesForSaveRequest + 1128
8   CoreData                        0x0000000191309584 _executeSaveChangesRequest + 388
9   CoreData                        0x00000001912ff5f0 -[NSSQLSaveChangesRequestContext executeRequestUsingConnection:] + 44
10  CoreData                        0x00000001912170c4 __52-[NSSQLDefaultConnectionManager handleStoreRequest:]_block_invoke + 256
11  libdispatch.dylib               0x0000000100455a10 0x100454000 + 6672
12  libdispatch.dylib               0x00000001004625bc 0x100454000 + 58812
13  CoreData                        0x0000000191216f64 -[NSSQLDefaultConnectionManager handleStoreRequest:] + 208
14  CoreData                        0x00000001912d9824 -[NSSQLCoreDispatchManager routeStoreRequest:] + 272
15  CoreData                        0x000000019124475c -[NSSQLCore dispatchRequest:withRetries:] + 236
16  CoreData                        0x0000000191240578 -[NSSQLCore processSaveChanges:forContext:] + 200
17  CoreData                        0x0000000191144f10 -[NSSQLCore executeRequest:withContext:error:] + 724
18  CoreData                        0x000000019122384c __65-[NSPersistentStoreCoordinator executeRequest:withContext:error:]_block_invoke + 3492
19  CoreData                        0x000000019121c0f0 -[NSPersistentStoreCoordinator _routeHeavyweightBlock:] + 276
20  CoreData                        0x0000000191144adc -[NSPersistentStoreCoordinator executeRequest:withContext:error:] + 408
21  CoreData                        0x000000019116597c -[NSManagedObjectContext save:] + 2548
22  myApp                   0x00000001000cd0dc 0x1000c0000 + 53468
23  myApp                   0x00000001000cbc24 0x1000c0000 + 48164
24  CoreLocation                    0x00000001970ee828 0x1970de000 + 67624
25  CoreLocation                    0x00000001970edfcc 0x1970de000 + 65484
26  CoreLocation                    0x00000001970e11d8 0x1970de000 + 12760
27  CoreFoundation                  0x000000018ee1930c __CFRUNLOOP_IS_CALLING_OUT_TO_A_BLOCK__ + 20
28  CoreFoundation                  0x000000018ee18b28 __CFRunLoopDoBlocks + 288
29  CoreFoundation                  0x000000018ee16e1c __CFRunLoopRun + 1884
30  CoreFoundation                  0x000000018ed46da4 CFRunLoopRunSpecific + 424
31  GraphicsServices                0x00000001907b1074 GSEventRunModal + 100
32  UIKit                           0x0000000195001c9c UIApplicationMain + 208
33  myApp                   0x00000001000e4574 0x1000c0000 + 148852
34  libdyld.dylib                   0x000000018dd5559c start + 4

Thread 1 name:  Dispatch queue: BKSProcessAssertionClient
Thread 1:
0   libsystem_kernel.dylib          0x000000018de47224 mach_msg_trap + 8
1   libsystem_kernel.dylib          0x000000018de4709c mach_msg + 72
2   libdispatch.dylib               0x000000010046d37c 0x100454000 + 103292
3   libdispatch.dylib               0x000000010046d780 0x100454000 + 104320
4   libxpc.dylib                    0x000000018df60edc xpc_connection_send_message_with_reply_sync + 196
5   BaseBoard                       0x000000019095a944 -[BSXPCMessage sendSynchronouslyToConnection:error:] + 76
6   BaseBoard                       0x0000000190957148 -[BSBaseXPCClient _sendMessage:withReplyHandler:waitForReply:waitDuration:] + 436
7   AssertionServices               0x00000001909a17c4 -[BKSProcessAssertionClient _assertionQueue_sendEvent:forMessageType:responseHandler:] + 136
8   AssertionServices               0x00000001909a0f78 -[BKSProcessAssertionClient sendCreateAssertion:] + 108
9   AssertionServices               0x00000001909a0968 -[BKSProcessAssertion _clientQueue_acquireAssertion] + 312
10  libdispatch.dylib               0x0000000100455a50 0x100454000 + 6736
11  libdispatch.dylib               0x0000000100455a10 0x100454000 + 6672
12  libdispatch.dylib               0x00000001004632e8 0x100454000 + 62184
13  libdispatch.dylib               0x0000000100459634 0x100454000 + 22068
14  libdispatch.dylib               0x0000000100465630 0x100454000 + 71216
15  libdispatch.dylib               0x000000010046539c 0x100454000 + 70556
16  libsystem_pthread.dylib         0x000000018df2b100 _pthread_wqthread + 1096
17  libsystem_pthread.dylib         0x000000018df2acac start_wqthread + 4

Thread 2 name:  Dispatch queue: com.apple.CoreLocation.ConnectionClient.0x17013b6c0.events
Thread 2:
0   libsystem_kernel.dylib          0x000000018de47278 semaphore_timedwait_trap + 8
1   libdispatch.dylib               0x000000010047f238 0x100454000 + 176696
2   libdispatch.dylib               0x0000000100467db8 0x100454000 + 81336
3   CoreLocation                    0x00000001970e1078 0x1970de000 + 12408
4   CoreLocation                    0x00000001970e6118 0x1970de000 + 33048
5   CoreLocation                    0x00000001970e5f18 0x1970de000 + 32536
6   CoreLocation                    0x0000000197131e88 0x1970de000 + 343688
7   CoreLocation                    0x000000019712e4f0 0x1970de000 + 328944
8   CoreLocation                    0x000000019712e414 0x1970de000 + 328724
9   CoreLocation                    0x000000019712fa80 0x1970de000 + 334464
10  libxpc.dylib                    0x000000018df5f84c _xpc_connection_call_event_handler + 68
11  libxpc.dylib                    0x000000018df5d358 _xpc_connection_mach_event + 1448
12  libdispatch.dylib               0x0000000100455ae0 0x100454000 + 6880
13  libdispatch.dylib               0x00000001004599d8 0x100454000 + 23000
14  libdispatch.dylib               0x0000000100463128 0x100454000 + 61736
15  libdispatch.dylib               0x0000000100458da0 0x100454000 + 19872
16  libdispatch.dylib               0x0000000100463128 0x100454000 + 61736
17  libdispatch.dylib               0x0000000100459634 0x100454000 + 22068
18  libdispatch.dylib               0x0000000100463128 0x100454000 + 61736
19  libdispatch.dylib               0x0000000100459634 0x100454000 + 22068
20  libdispatch.dylib               0x0000000100464358 0x100454000 + 66392
21  libdispatch.dylib               0x000000010046c57c 0x100454000 + 99708
22  libsystem_pthread.dylib         0x000000018df2afbc _pthread_wqthread + 772
23  libsystem_pthread.dylib         0x000000018df2acac start_wqthread + 4

Thread 3 name:  com.apple.uikit.eventfetch-thread
Thread 3:
0   libsystem_kernel.dylib          0x000000018de47224 mach_msg_trap + 8
1   libsystem_kernel.dylib          0x000000018de4709c mach_msg + 72
2   CoreFoundation                  0x000000018ee18e90 __CFRunLoopServiceMachPort + 192
3   CoreFoundation                  0x000000018ee16ae4 __CFRunLoopRun + 1060
4   CoreFoundation                  0x000000018ed46da4 CFRunLoopRunSpecific + 424
5   Foundation                      0x000000018f861db4 -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 304
6   Foundation                      0x000000018f882b84 -[NSRunLoop(NSRunLoop) runUntilDate:] + 96
7   UIKit                           0x000000019598b830 -[UIEventFetcher threadMain] + 136
8   Foundation                      0x000000018f95f318 __NSThread__start__ + 996
9   libsystem_pthread.dylib         0x000000018df2d68c _pthread_body + 240
10  libsystem_pthread.dylib         0x000000018df2d59c _pthread_body + 0
11  libsystem_pthread.dylib         0x000000018df2acb4 thread_start + 4

Thread 4:
0   libsystem_pthread.dylib         0x000000018df2aca8 start_wqthread + 0

Thread 5 name:  com.apple.NSURLConnectionLoader
Thread 5:
0   libsystem_kernel.dylib          0x000000018de47224 mach_msg_trap + 8
1   libsystem_kernel.dylib          0x000000018de4709c mach_msg + 72
2   CoreFoundation                  0x000000018ee18e90 __CFRunLoopServiceMachPort + 192
3   CoreFoundation                  0x000000018ee16ae4 __CFRunLoopRun + 1060
4   CoreFoundation                  0x000000018ed46da4 CFRunLoopRunSpecific + 424
5   CFNetwork                       0x000000018f553df4 +[NSURLConnection(Loader) _resourceLoadLoop:] + 404
6   Foundation                      0x000000018f95f318 __NSThread__start__ + 996
7   libsystem_pthread.dylib         0x000000018df2d68c _pthread_body + 240
8   libsystem_pthread.dylib         0x000000018df2d59c _pthread_body + 0
9   libsystem_pthread.dylib         0x000000018df2acb4 thread_start + 4

Thread 6 name:  GAIThread
Thread 6:
0   libsystem_kernel.dylib          0x000000018de47224 mach_msg_trap + 8
1   libsystem_kernel.dylib          0x000000018de4709c mach_msg + 72
2   CoreFoundation                  0x000000018ee18e90 __CFRunLoopServiceMachPort + 192
3   CoreFoundation                  0x000000018ee16ae4 __CFRunLoopRun + 1060
4   CoreFoundation                  0x000000018ed46da4 CFRunLoopRunSpecific + 424
5   Foundation                      0x000000018f861db4 -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 304
6   Foundation                      0x000000018f8b6704 -[NSRunLoop(NSRunLoop) run] + 88
7   myApp                   0x0000000100120398 0x1000c0000 + 394136
8   Foundation                      0x000000018f95f318 __NSThread__start__ + 996
9   libsystem_pthread.dylib         0x000000018df2d68c _pthread_body + 240
10  libsystem_pthread.dylib         0x000000018df2d59c _pthread_body + 0
11  libsystem_pthread.dylib         0x000000018df2acb4 thread_start + 4

Thread 7:
0   libsystem_pthread.dylib         0x000000018df2aca8 start_wqthread + 0

Thread 8:
0   libsystem_pthread.dylib         0x000000018df2aca8 start_wqthread + 0

事件标识符：BDD70C46-6573-44A7-85AB-620E6FBA207F
CrashReporter钥匙：c04f591f9e0cc9d1991ce10e33ebcabd56affbe6
硬件型号：iPhone8,4
进程：myApp[17746]
路径：/private/var/containers/Bundle/Application/878DB803-1DA5-46D7-8B50-655D43A5C28D/myApp.app/myApp
标识符：com.example.myApp
版本：2（1.0.2）
代码类型：ARM-64（本机）
角色：前台
父进程：已启动[1]
联盟：com.example.myApp[16959]
日期/时间：2017-09-19 14:34:57.1435+0300
发布时间：2017-09-19 14:31:38.0853+0300
操作系统版本：iPhone操作系统10.3.3（14G60）
报告版本：104
异常类型：EXC_崩溃（SIGKILL）
异常代码：0x0000000000，0x0000000000000000
例外说明：EXC_尸体通知
终止原因：命名空间，代码0x8BADF0D
由以下线程触发：0
已筛选的系统日志：
找不到
线程0名称：myApp.sqlite的调度队列：SQLQueue 0x100724310
线程0崩溃：
0 libsqlite3.dylib 0x000000018f36d818 0x18f361000+51224
1 libsqlite3.dylib 0x000000018f36c9a4 0x18f361000+47524
2 libsqlite3.dylib 0x000000018f36c9a4 0x18f361000+47524
3 libsqlite3.dylib 0x000000018f36c2c4 0x18f361000+45764
4 libsqlite3.dylib 0x000000018f36bf24 0x18f361000+44836
5 CoreData 0x000000019113e0b0-[NSSQLiteConnection prepareSQLStatement:][468
6 CoreData 0x000000019125f178-[NSSQLiteConnection updateRow:forRequestContext:+492
7 CoreData 0x0000000191307f28_writeChangesForSaveRequest+1128
8 CoreData 0x0000000191309584_executeSaveChangesRequest+388
9 CoreData 0x00000001912F5F0-[NSSQLSaveChangesRequestContext ExecuterRequestUsingConnection:+44
10 CoreData 0x00000001912170c4 u_52-[NSSQLDefaultConnectionManager handleStoreRequest:][u block_invoke+256
11 libdispatch.dylib 0x0000000100455a10 0x100454000+6672
12 libdispatch.dylib 0x00000001004625bc 0x100454000+58812
13 CoreData 0x0000000191216f64-[NSSQLDefaultConnectionManager handleStoreRequest:+208
14 CoreData 0x00000001912d9824-[NSSQLCoreDispatchManager路由请求：+272
15 CoreData 0x000000019124475c-[NSSQLCore dispatchRequest:withRetries:][236
16 CoreData 0x0000000191240578-[NSSQLCore processSaveChanges:forContext:+200
17 CoreData 0x0000000191144f10-[NSSQLCore executeRequest:withContext:error:+724
18 CoreData 0x000000019122384c\uuu 65-[NSPersistentStoreCoordinator executeRequest:withContext:error:][u block\u invoke+3492
19核心数据0x000000019121c0f0-[NSPersistentStoreCoordinator\u routeHeavyweightBlock:+276
20 CoreData 0x0000000191144adc-[NSPersistentStoreCoordinator executeRequest:withContext:error:+408
21 CoreData 0x000000019116597c-[NSManagedObjectContext保存：][2548
22 myApp 0x00000001000cd0dc 0x10000C0000+53468
23 myApp 0x00000001000cbc24 0x1000c0000+48164
24芯位置0x00000001970ee828 0x1970de000+67624
25芯位置0x00000001970edfcc 0x1970de000+65484
26芯位置0x00000001970e11d8 0x1970de000+12760
27 CoreFoundation 0x000000018ee1930c\uuuu CFRUNLOOP\u正在调用\uu OUT\u到\uu块\uuuu+20
28 CoreFoundation 0x000000018ee18b28\uuu cfrunloopdoblock+288
29 CoreFoundation 0x000000018ee16e1c\uuu CFRunLoopRun+1884
30 CoreFoundation 0x000000018ed46da4 CFRunLoopRunSpecific+424
31图形服务0x00000001907b1074 GSEventRunModal+100
32 UIKit 0x0000000195001c9c UIApplicationMain+208
33 myApp 0x00000001000e4574 0x1000c0000+148852
34 libdyld.dylib 0x000000018dd5559c启动+4
线程1名称：调度队列：BKSProcessAssertionClient
线程1：
0 libsystem_kernel.dylib 0x000000018de47224马赫数msg_陷阱+8
1 libsystem_kernel.dylib 0x000000018de4709c mach_msg+72
2 libdispatch.dylib 0x000000010046d37c 0x100454000+103292
3 libdispatch.dylib 0x000000010046d780 0x100454000+104320
4 libxpc.dylib 0x000000018df60edc xpc\u连接\u发送消息\u与\u回复\u同步+196
5基板0x000000019095a944-[BSXPCMessage sendSynchronouslyToConnection:错误：][76
6基板0x0000000190957148-[BSBaseXPCClient\u sendMessage:withReplyHandler:waitForReply:waitDuration:+436
7断言服务0x00000001909a17c4-[BKSProcessAssertionClient _断言队列_sendEvent:FormMessageType:responseHandler:+136
8断言服务0x00000001909a0f78-[BKSProcessAssertionClient sendCreateAssertion:+108
9断言服务0x00000001909a0968-[BKSProcessAssertion\u clientQueue\u acquireAssertion]+312
10 libdispatch.dylib 0x0000000100455a50 0x100454000+6736
11 libdispatch.dylib 0x0000000100455a10 0x100454000+6672
12 libdispatch.dylib 0x00000001004632e8 0x100454000+62184
13.dy
Incident Identifier: D5D6C3C6-7EB7-4E2C-901C-7203943BD722
CrashReporter Key:   c04f591f9e0cc9d1991ce10e33ebcabd56affbe6
Hardware Model:      iPhone8,4
Process:             myApp [17444]
Path:                /private/var/containers/Bundle/Application/93AB2A15-0C65-47D5-BE24-FB298DC396E0/myApp.app/myApp
Identifier:          com.example.myApp
Version:             2 (1.0.2)
Code Type:           ARM-64 (Native)
Role:                Foreground
Parent Process:      launchd [1]
Coalition:           com.example.myApp [16449]


Date/Time:           2017-09-19 12:41:45.3051 +0300
Launch Time:         2017-09-19 12:24:22.7861 +0300
OS Version:          iPhone OS 10.3.3 (14G60)
Report Version:      104

Exception Type:  EXC_CRASH (SIGKILL)
Exception Codes: 0x0000000000000000, 0x0000000000000000
Exception Note:  EXC_CORPSE_NOTIFY
Termination Reason: Namespace <0xF>, Code 0x8badf00d
Triggered by Thread:  0

Filtered syslog:
None found

Thread 0 name:  Dispatch queue: com.apple.main-thread
Thread 0 Crashed:
0   libsystem_kernel.dylib          0x000000018de47224 mach_msg_trap + 8
1   libsystem_kernel.dylib          0x000000018de4709c mach_msg + 72
2   CoreFoundation                  0x000000018ee18e90 __CFRunLoopServiceMachPort + 192
3   CoreFoundation                  0x000000018ee16ae4 __CFRunLoopRun + 1060
4   CoreFoundation                  0x000000018ed46da4 CFRunLoopRunSpecific + 424
5   GraphicsServices                0x00000001907b1074 GSEventRunModal + 100
6   UIKit                           0x0000000195001c9c UIApplicationMain + 208
7   myApp                   0x0000000100031bb8 0x10000c000 + 154552
8   libdyld.dylib                   0x000000018dd5559c start + 4

Thread 1 name:  com.apple.uikit.eventfetch-thread
Thread 1:
0   libsystem_kernel.dylib          0x000000018de47224 mach_msg_trap + 8
1   libsystem_kernel.dylib          0x000000018de4709c mach_msg + 72
2   CoreFoundation                  0x000000018ee18e90 __CFRunLoopServiceMachPort + 192
3   CoreFoundation                  0x000000018ee16ae4 __CFRunLoopRun + 1060
4   CoreFoundation                  0x000000018ed46da4 CFRunLoopRunSpecific + 424
5   Foundation                      0x000000018f861db4 -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 304
6   Foundation                      0x000000018f882b84 -[NSRunLoop(NSRunLoop) runUntilDate:] + 96
7   UIKit                           0x000000019598b830 -[UIEventFetcher threadMain] + 136
8   Foundation                      0x000000018f95f318 __NSThread__start__ + 996
9   libsystem_pthread.dylib         0x000000018df2d68c _pthread_body + 240
10  libsystem_pthread.dylib         0x000000018df2d59c _pthread_body + 0
11  libsystem_pthread.dylib         0x000000018df2acb4 thread_start + 4

Thread 2 name:  com.twitter.crashlytics.ios.MachExceptionServer
Thread 2:
0   libsystem_kernel.dylib          0x000000018de47224 mach_msg_trap + 8
1   libsystem_kernel.dylib          0x000000018de4709c mach_msg + 72
2   myApp                   0x000000010008d6a0 0x10000c000 + 530080
3   libsystem_pthread.dylib         0x000000018df2d68c _pthread_body + 240
4   libsystem_pthread.dylib         0x000000018df2d59c _pthread_body + 0
5   libsystem_pthread.dylib         0x000000018df2acb4 thread_start + 4

Thread 3 name:  com.apple.NSURLConnectionLoader
Thread 3:
0   libsystem_kernel.dylib          0x000000018de47224 mach_msg_trap + 8
1   libsystem_kernel.dylib          0x000000018de4709c mach_msg + 72
2   CoreFoundation                  0x000000018ee18e90 __CFRunLoopServiceMachPort + 192
3   CoreFoundation                  0x000000018ee16ae4 __CFRunLoopRun + 1060
4   CoreFoundation                  0x000000018ed46da4 CFRunLoopRunSpecific + 424
5   CFNetwork                       0x000000018f553df4 +[NSURLConnection(Loader) _resourceLoadLoop:] + 404
6   Foundation                      0x000000018f95f318 __NSThread__start__ + 996
7   libsystem_pthread.dylib         0x000000018df2d68c _pthread_body + 240
8   libsystem_pthread.dylib         0x000000018df2d59c _pthread_body + 0
9   libsystem_pthread.dylib         0x000000018df2acb4 thread_start + 4

Thread 4 name:  GAIThread
Thread 4:
0   libsystem_kernel.dylib          0x000000018de47224 mach_msg_trap + 8
1   libsystem_kernel.dylib          0x000000018de4709c mach_msg + 72
2   CoreFoundation                  0x000000018ee18e90 __CFRunLoopServiceMachPort + 192
3   CoreFoundation                  0x000000018ee16ae4 __CFRunLoopRun + 1060
4   CoreFoundation                  0x000000018ed46da4 CFRunLoopRunSpecific + 424
5   Foundation                      0x000000018f861db4 -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 304
6   Foundation                      0x000000018f8b6704 -[NSRunLoop(NSRunLoop) run] + 88
7   myApp                   0x000000010006d9dc 0x10000c000 + 399836
8   Foundation                      0x000000018f95f318 __NSThread__start__ + 996
9   libsystem_pthread.dylib         0x000000018df2d68c _pthread_body + 240
10  libsystem_pthread.dylib         0x000000018df2d59c _pthread_body + 0
11  libsystem_pthread.dylib         0x000000018df2acb4 thread_start + 4

Thread 5:
0   libsystem_pthread.dylib         0x000000018df2aca8 start_wqthread + 0

Thread 6:
0   libsystem_pthread.dylib         0x000000018df2aca8 start_wqthread + 0

Thread 7:
0   libsystem_pthread.dylib         0x000000018df2aca8 start_wqthread + 0

Thread 8:
0   libsystem_pthread.dylib         0x000000018df2aca8 start_wqthread + 0

Thread 9:
0   libsystem_pthread.dylib         0x000000018df2aca8 start_wqthread + 0

Role:                Foreground