所以我收到了iOS应用程序的Crashlytics崩溃报告。对于某些用户，应用程序崩溃，在崩溃日志中提供SIGABRT。
我一直试图找出这个错误的原因无数小时但是由于错误的罕见性（大约1-2％的用户）我无法重现错误，并且由于来自Crashlytics的有限信息量，我一直无法找到此错误的根本原因。
部署目标是iOS 7适用于应用程序，iOS 10+各种规模的设备都遇到了崩溃（我不确定iOS 9,8或7是否也遇到错误 - Crashlytics只显示iOS崩溃10 +）
这是堆栈跟踪：
CRASH_INFO_ENTRY_1
*** error for object 0x17127f4c0: Invalid pointer dequeued from free list
CRASH_INFO_ENTRY_0
abort() called
Crashed: com.apple.main-thread
SIGABRT ABORT 0x000000018e2ea014
#0. Crashed: com.apple.main-thread
0 libsystem_kernel.dylib 0x18f6ca014 __pthread_kill + 8
1 libsystem_pthread.dylib 0x18f791460 pthread_kill + 112
2 libsystem_c.dylib 0x18f63e3f4 abort + 140
3 libsystem_malloc.dylib 0x18f70ea38
_nano_vet_and_size_of_live + 330
4 libsystem_malloc.dylib 0x18f710bf0
_nano_malloc_check_clear + 392
5 libsystem_malloc.dylib 0x18f70fbb4 nano_calloc + 80
6 libsystem_malloc.dylib 0x18f701180 malloc_zone_calloc + 152
7 libsystem_malloc.dylib 0x18f7010c4 calloc + 40
8 libobjc.A.dylib 0x18f131cfc cache_t::reallocate(unsigned int, unsigned int) + 52
9 libobjc.A.dylib 0x18f1321fc cache_fill + 216
10 libobjc.A.dylib 0x18f13cd00 lookUpImpOrForward + 412
11 libobjc.A.dylib 0x18f147258 _objc_msgSend_uncached + 56
12 UIKit 0x1967274e8 -[UITableView _endCellAnimationsWithContext:] + 13964
13 Champion 0x100097bf4 -[MatchdayComposeController controllerDidChangeContent:] (MatchdayComposeController.m:427)
14 CoreData 0x192abfe28 __82-[NSFetchedResultsController(PrivateMethods) _core_managedObjectContextDidChange:]_block_invoke + 4760
15 CoreData 0x192abeb80 -[NSFetchedResultsController(PrivateMethods) _core_managedObjectContextDidChange:] + 124
16 CoreFoundation 0x19069622c __CFNOTIFICATIONCENTER_IS_CALLING_OUT_TO_AN_OBSERVER__ + 20
17 CoreFoundation 0x190695930 _CFXRegistrationPost + 400
18 CoreFoundation 0x1906956ac ___CFXNotificationPost_block_invoke + 60
19 CoreFoundation 0x190704b9c -[_CFXNotificationRegistrar find:object:observer:enumerator:] + 1504
20 CoreFoundation 0x1905d7bf4 _CFXNotificationPost + 376
21 Foundation 0x1910de6bc -[NSNotificationCenter postNotificationName:object:userInfo:] + 68
22 CoreData 0x1929eed1c -[NSManagedObjectContext(_NSInternalNotificationHandling) _postObjectsDidChangeNotificationWithUserInfo:] + 724
23 CoreData 0x192a75170 -[NSManagedObjectContext(_NSInternalChangeProcessing) _createAndPostChangeNotification:deletions:updates:refreshes:deferrals:wasMerge:] + 1336
24 CoreData 0x1929ed338 -[NSManagedObjectContext(_NSInternalChangeProcessing) _processRecentChanges:] + 2116
25 CoreData 0x1929ebe3c -[NSManagedObjectContext save:] + 416
26 Champion 0x10008e2ac -[AppDelegate saveContext] (AppDelegate.m:263)
27 Champion 0x10009d1d4 +[Globals saveManagedObjectContext] (Globals.m:157)
28 Champion 0x10006ee4c -[EntitySyncClient saveUpdates:] (EntitySyncClient.m:232)
29 Champion 0x1000690a0 -[MatchController datepickerDidChangeValue:] (MatchController.m:994)
30 UIKit 0x1965799a0 -[UIApplication sendAction:to:from:forEvent:] + 96
31 UIKit 0x196579920 -[UIControl sendAction:to:forEvent:] + 80
32 UIKit 0x196563dd0 -[UIControl _sendActionsForEvents:withEvent:] + 452
33 UIKit 0x196e62c44 -[_UIDatePickerView pickerView:didSelectRow:inComponent:] + 540
34 UIKit 0x1967b965c -[UIPickerView _sendSelectionChangedForComponent:notify:] + 116
35 UIKit 0x1967b9894 -[UIPickerView _sendSelectionChangedFromTable:notify:] + 344
36 UIKit 0x196ce6878 -[UIPickerTableView _scrollingFinished] + 188
37 UIKit 0x196ce6a50 -[UIPickerTableView scrollViewDidEndDecelerating:] + 28
38 UIKit 0x196857abc -[UIScrollView(UIScrollViewInternal) _scrollViewDidEndDeceleratingForDelegate] + 132
39 UIKit 0x1966ed2cc -[UIScrollView(UIScrollViewInternal) _stopScrollDecelerationNotify:] + 332
40 UIKit 0x1966ece08 -[UIScrollView _smoothScrollWithUpdateTime:] + 2356
41 QuartzCore 0x1938ff640 CA::Display::DisplayLinkItem::dispatch(unsigned long long) + 44
42 QuartzCore 0x1938ff4ec CA::Display::DisplayLink::dispatch_items(unsigned long long, unsigned long long, unsigned long long) + 444
43 IOKit 0x190968570 IODispatchCalloutFromCFMessage + 372
44 CoreFoundation 0x19069256c __CFMachPortPerform + 180
45 CoreFoundation 0x1906aa934 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 56
46 CoreFoundation 0x1906aa0e8 __CFRunLoopDoSource1 + 436
47 CoreFoundation 0x1906a7bcc __CFRunLoopRun + 1840
48 CoreFoundation 0x1905d6048 CFRunLoopRunSpecific + 444
49 GraphicsServices 0x192059198 GSEventRunModal + 180
50 UIKit 0x1965af818 -[UIApplication _run] + 684
51 UIKit 0x1965aa550 UIApplicationMain + 208
52 Champion 0x1000b082c main (main.m:14)
53 libdispatch.dylib 0x18f5b85b8 (Missing)
我将非常感谢任何形式的帮助。如果我可以获得重现Crashlytics错误的任何指示，我将不胜感激。
使用代码更新问题
在controllerDidChangeContent:中，主要是表视图结束更新。
- (void)controllerDidChangeContent:(NSFetchedResultsController *)controller {
[self.tableView endUpdates];
if(controller.fetchedObjects.count == 0){
self.showsNoMatchesHint = YES;
}
else{
self.showsNoMatchesHint = NO;
}
}
答案 0 :(得分：0)
鉴于程序的最后一次喘息是在_endCellAnimationsWithContext中，并且这些类型的动画通常在完成单元格编辑时发生，我会在特定表格完成单元格编辑操作时查看问题。有一个选择器视图和通知也在那里进行，所以这应该缩小一些。祝你好运。
答案 1 :(得分：0)
看起来像是由这行代码引起的
[self.tableView endUpdates];
我建议你确保-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView的逻辑是正确的。例如，当数组为空时，它不会返回0。祝你好运。