【发布时间】：2017-05-03 08:05:03
【问题描述】：
所以我收到了我的 iOS 应用程序的 Crashlytics 崩溃报告。对于某些用户，该应用程序一直在崩溃，并在崩溃日志中显示 SIGABRT。
无数小时以来，我一直试图找出此错误的原因，但由于该错误的罕见性（大约 1-2% 的用户），我无法重现该错误，并且由于 Crashlytics 提供的信息量有限，我一直找不到这个错误的根本原因。
应用程序的部署目标是 iOS 7，所有尺寸的 iOS 10+ 设备都遇到崩溃（我不确定 iOS 9、8 或 7 是否也遇到错误 - Crashlytics 仅显示 iOS 上的崩溃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。如果我能得到任何重现 Crashlytics 错误的指针，我也将不胜感激。
用代码更新问题
在controllerDidChangeContent: 中主要是表格视图正在结束更新。
- (void)controllerDidChangeContent:(NSFetchedResultsController *)controller {
[self.tableView endUpdates];
if(controller.fetchedObjects.count == 0){
self.showsNoMatchesHint = YES;
}
else{
self.showsNoMatchesHint = NO;
}
}
【问题讨论】：
-
嗯，我已经尝试了第二个链接（僵尸，内存泄漏）中的所有内容，但没有用。我仍然无法在我的设备或模拟器上重现此崩溃。我很犹豫是否要更改第一个链接中给出的部署目标，但似乎这是唯一剩下要做的事情了。
-
用你的
MatchdayComposeController controllerDidChangeContent:方法更新你的问题并指出第427行。 -
line# 427 是第一行
[self.tableview endUpdates];
标签： ios objective-c iphone debugging crashlytics