iOS 7 应用程序崩溃 EXC_CRASH (SIGABRT) objc_exception_throw 在 iOS 6 上工作正常

Question

我们的应用程序在 iOS 7 中崩溃，但在 iOS 6 中运行良好。我们不确定是什么导致了这个问题。我们可以看到抛出了一些异常，但我们不确定代码中的何处导致了异常。

这是崩溃报告:

Incident Identifier: 1F589930-15BD-49F7-80E6-831A95092FDF
CrashReporter Key:   aaa79870161ff1e371394b881a26e97f0066f464
Hardware Model:      iPhone5,2
Process:             myapp [1492]
Path:                /var/mobile/Applications/A121DF2F-A7B9-4DD9-9FBC-BB06CD7C5EF5/myapp.app/myapp
Identifier:          co.uk.myapp
Version:             1.0 (0.9)
Code Type:           ARM (Native)
Parent Process:      launchd [1]

Date/Time:           2013-10-01 14:59:17.555 +0530
OS Version:          iOS 7.0 (11A465)
Report Version:      104

Exception Type:  EXC_CRASH (SIGABRT)
Exception Codes: 0x0000000000000000, 0x0000000000000000
Triggered by Thread:  2

Last Exception Backtrace:
0   CoreFoundation                  0x2d4e4e86 __exceptionPreprocess + 126
1   libobjc.A.dylib                 0x377de6c2 objc_exception_throw + 34
2   CoreFoundation                  0x2d41e0c6 -[__NSPlaceholderArray initWithObjects:count:] + 414
3   CoreFoundation                  0x2d427a4c +[NSArray arrayWithObjects:count:] + 40
4   CoreFoundation                  0x2d45d9c0 -[NSDictionary allKeys] + 172
5   Foundation                      0x2df73336 -[NSISObjectiveLinearExpression description] + 122
6   Foundation                      0x2ddfc808 _NSDescriptionWithLocaleFunc + 84
7   CoreFoundation                  0x2d4babf2 __CFStringAppendFormatCore + 5618
8   CoreFoundation                  0x2d429d18 _CFStringCreateWithFormatAndArgumentsAux + 72
9   CoreFoundation                  0x2d4523c2 _CFLogvEx + 82
10  Foundation                      0x2de0b7ee NSLogv + 82
11  Foundation                      0x2de0b78e NSLog + 22
12  Foundation                      0x2de4a918 -[NSISEngine minimizeConstantInObjectiveRowWithHead:] + 180
13  Foundation                      0x2de4a46e -[NSISEngine optimize] + 170
14  Foundation                      0x2de461a8 -[NSISEngine withBehaviors:performModifications:] + 312
15  UIKit                           0x2fc69490 -[UIView(Hierarchy) _postMovedFromSuperview:] + 292
16  UIKit                           0x2feffb92 __UIViewWasRemovedFromSuperview + 214
17  UIKit                           0x2fc68342 -[UIView(Hierarchy) removeFromSuperview] + 266
18  UIKit                           0x2fd3cccc -[UIScrollView removeFromSuperview] + 60
19  UIKit                           0x2fd313e4 -[UINavigationController navigationTransitionView:didEndTransition:fromView:toView:] + 312
20  UIKit                           0x2fdfcb5c __49-[UINavigationController _startCustomTransition:]_block_invoke + 156
21  UIKit                           0x2fd81416 -[_UIViewControllerTransitionContext completeTransition:] + 70
22  UIKit                           0x2fe418dc __53-[_UINavigationParallaxTransition animateTransition:]_block_invoke105 + 448
23  UIKit                           0x2fca2618 -[UIViewAnimationBlockDelegate _didEndBlockAnimation:finished:context:] + 280
24  UIKit                           0x2fca226a -[UIViewAnimationState sendDelegateAnimationDidStop:finished:] + 174
25  UIKit                           0x2fca2186 -[UIViewAnimationState animationDidStop:finished:] + 62
26  QuartzCore                      0x2f8f8a0e CA::Layer::run_animation_callbacks(void*) + 230
27  libdispatch.dylib               0x37cc30ea _dispatch_client_callout + 18
28  libdispatch.dylib               0x37cc59a4 _dispatch_main_queue_callback_4CF + 264
29  CoreFoundation                  0x2d4af5b4 __CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__ + 4
30  CoreFoundation                  0x2d4ade80 __CFRunLoopRun + 1304
31  CoreFoundation                  0x2d41853c CFRunLoopRunSpecific + 520
32  CoreFoundation                  0x2d41831e CFRunLoopRunInMode + 102
33  GraphicsServices                0x3214f2e6 GSEventRunModal + 134
34  UIKit                           0x2fccf1e0 UIApplicationMain + 1132
35  myapp                           0x00020a16 main (main.mm:16)
36  libdyld.dylib                   0x37cd7ab2 tlv_initializer + 2


Thread 0:
0   libsystem_kernel.dylib          0x37d8e588 __semwait_signal_nocancel + 24
1   libsystem_c.dylib               0x37d09788 nanosleep$NOCANCEL + 160
2   libsystem_c.dylib               0x37d24f10 usleep$NOCANCEL + 48
3   libsystem_c.dylib               0x37d3f030 abort + 80
4   myapp                           0x001efaea uncaught_exception_handler + 22
5   CoreFoundation                  0x2d4e518a __handleUncaughtException + 578
6   libobjc.A.dylib                 0x377de924 _objc_terminate() + 172
7   libc++abi.dylib                 0x371a51b0 std::__terminate(void (*)()) + 76
8   libc++abi.dylib                 0x371a4a04 __cxa_throw + 112
9   libobjc.A.dylib                 0x377de796 objc_exception_throw + 246
10  CoreFoundation                  0x2d41e0c6 -[__NSPlaceholderArray initWithObjects:count:] + 414
11  CoreFoundation                  0x2d427a4c +[NSArray arrayWithObjects:count:] + 40
12  CoreFoundation                  0x2d45d9c0 -[NSDictionary allKeys] + 172
13  Foundation                      0x2df73336 -[NSISObjectiveLinearExpression description] + 122
14  Foundation                      0x2ddfc808 _NSDescriptionWithLocaleFunc + 84
15  CoreFoundation                  0x2d4babf4 __CFStringAppendFormatCore + 5620
16  CoreFoundation                  0x2d429d18 _CFStringCreateWithFormatAndArgumentsAux + 72
17  CoreFoundation                  0x2d4523c2 _CFLogvEx + 82
18  Foundation                      0x2de0b7ee NSLogv + 82
19  Foundation                      0x2de0b78e NSLog + 22
20  Foundation                      0x2de4a918 -[NSISEngine minimizeConstantInObjectiveRowWithHead:] + 180
21  Foundation                      0x2de4a46e -[NSISEngine optimize] + 170
22  Foundation                      0x2de461a8 -[NSISEngine withBehaviors:performModifications:] + 312
23  UIKit                           0x2fc69490 -[UIView(Hierarchy) _postMovedFromSuperview:] + 292
24  UIKit                           0x2feffb92 __UIViewWasRemovedFromSuperview + 214
25  UIKit                           0x2fc68342 -[UIView(Hierarchy) removeFromSuperview] + 266
26  UIKit                           0x2fd3cccc -[UIScrollView removeFromSuperview] + 60
27  UIKit                           0x2fd313e4 -[UINavigationController navigationTransitionView:didEndTransition:fromView:toView:] + 312
28  UIKit                           0x2fdfcb5c __49-[UINavigationController _startCustomTransition:]_block_invoke + 156
29  UIKit                           0x2fd81418 -[_UIViewControllerTransitionContext completeTransition:] + 72
30  UIKit                           0x2fe418dc __53-[_UINavigationParallaxTransition animateTransition:]_block_invoke105 + 448
31  UIKit                           0x2fca261a -[UIViewAnimationBlockDelegate _didEndBlockAnimation:finished:context:] + 282
32  UIKit                           0x2fca226a -[UIViewAnimationState sendDelegateAnimationDidStop:finished:] + 174
33  UIKit                           0x2fca2186 -[UIViewAnimationState animationDidStop:finished:] + 62
34  QuartzCore                      0x2f8f8a0e CA::Layer::run_animation_callbacks(void*) + 230
35  libdispatch.dylib               0x37cc30ec _dispatch_client_callout + 20
36  libdispatch.dylib               0x37cc59a4 _dispatch_main_queue_callback_4CF + 264
37  CoreFoundation                  0x2d4af5b4 __CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__ + 4
38  CoreFoundation                  0x2d4ade80 __CFRunLoopRun + 1304
39  CoreFoundation                  0x2d41853c CFRunLoopRunSpecific + 520
40  CoreFoundation                  0x2d41831e CFRunLoopRunInMode + 102
41  GraphicsServices                0x3214f2e6 GSEventRunModal + 134
42  UIKit                           0x2fccf1e0 UIApplicationMain + 1132
43  myapp                           0x00020a16 main (main.mm:16)
44  libdyld.dylib                   0x37cd7ab4 start + 0

Thread 1:
0   libsystem_kernel.dylib          0x37d7b838 kevent64 + 24
1   libdispatch.dylib               0x37cca0d0 _dispatch_mgr_invoke + 228
2   libdispatch.dylib               0x37cc463e _dispatch_mgr_thread + 34

Thread 2 Crashed:
0   libsystem_kernel.dylib          0x37d8ec7c __workq_kernreturn + 8
1   libsystem_pthread.dylib         0x37df2e06 _pthread_wqthread + 306
2   libsystem_pthread.dylib         0x37df2cc0 start_wqthread + 4

Thread 3 name:  com.apple.NSURLConnectionLoader
Thread 3:
0   libsystem_kernel.dylib          0x37d7ba84 mach_msg_trap + 20
1   libsystem_kernel.dylib          0x37d7b87c mach_msg + 36
2   CoreFoundation                  0x2d4af55c __CFRunLoopServiceMachPort + 152
3   CoreFoundation                  0x2d4adc7c __CFRunLoopRun + 788
4   CoreFoundation                  0x2d41853c CFRunLoopRunSpecific + 520
5   CoreFoundation                  0x2d41831e CFRunLoopRunInMode + 102
6   Foundation                      0x2de5364c +[NSURLConnection(Loader) _resourceLoadLoop:] + 316
7   Foundation                      0x2dec8dc2 __NSThread__main__ + 1058
8   libsystem_pthread.dylib         0x37df4c5a _pthread_body + 138
9   libsystem_pthread.dylib         0x37df4bca _pthread_start + 98
10  libsystem_pthread.dylib         0x37df2ccc thread_start + 4

Thread 4:
0   libsystem_kernel.dylib          0x37d7ba84 mach_msg_trap + 20
1   libsystem_kernel.dylib          0x37d7b87c mach_msg + 36
2   CoreFoundation                  0x2d4af55c __CFRunLoopServiceMachPort + 152
3   CoreFoundation                  0x2d4adc7c __CFRunLoopRun + 788
4   CoreFoundation                  0x2d41853c CFRunLoopRunSpecific + 520
5   CoreFoundation                  0x2d41831e CFRunLoopRunInMode + 102
6   Foundation                      0x2de06822 -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 250
7   Foundation                      0x2de57664 -[NSRunLoop(NSRunLoop) run] + 76
8   myapp                           0x001c1ffa +[AFURLConnectionOperation networkRequestThreadEntryPoint:] (AFURLConnectionOperation.m:160)
9   Foundation                      0x2dec8dc2 __NSThread__main__ + 1058
10  libsystem_pthread.dylib         0x37df4c5a _pthread_body + 138
11  libsystem_pthread.dylib         0x37df4bca _pthread_start + 98
12  libsystem_pthread.dylib         0x37df2ccc thread_start + 4

Thread 5 name:  com.apple.CFSocket.private
Thread 5:
0   libsystem_kernel.dylib          0x37d8e440 select$DARWIN_EXTSN + 20
1   CoreFoundation                  0x2d4b345e __CFSocketManager + 482
2   libsystem_pthread.dylib         0x37df4c5a _pthread_body + 138
3   libsystem_pthread.dylib         0x37df4bca _pthread_start + 98
4   libsystem_pthread.dylib         0x37df2ccc thread_start + 4

Thread 6:
0   libsystem_kernel.dylib          0x37d8ec7c __workq_kernreturn + 8
1   libsystem_pthread.dylib         0x37df2e06 _pthread_wqthread + 306
2   libsystem_pthread.dylib         0x37df2cc0 start_wqthread + 4

Thread 2 crashed with ARM Thread State (32-bit):
    r0: 0x00000004    r1: 0x00000000      r2: 0x00000000      r3: 0x00000000
    r4: 0x02bcc000    r5: 0x00060001      r6: 0x00004007      r7: 0x02bcbfe0
    r8: 0x00000000    r9: 0x00000001     r10: 0x00000000     r11: 0x00000000
    ip: 0x00000170    sp: 0x02bcbfc8      lr: 0x37df2e0b      pc: 0x37d8ec7c
  cpsr: 0x40000010

Answer 1

这次崩溃看起来像是您在应用中设置的约束(在后台线程中？)的问题。

此外，这看起来与您报告的其他崩溃相似(不相同):https://stackoverflow.com/questions/19114389/app-hang-and-then-crash-ios-7

简而言之:您的约束设置(大概在代码中)导致了这个问题。很可能是因为您的约束引用了一个不再存在的 View 。

在长:

1. 一些代码从线程 2 分派(dispatch)到主线程:

   28 libdispatch.dylib 0x37cc59a4 _dispatch_main_queue_callback_4CF + 264

2. 通过导航 Controller 到另一个 View Controller 的转换确实完成了:

   21 UIKit 0x2fd81416 -[_UIViewControllerTransitionContext completeTransition:] + 70

3. ScrollView 正在从其父 View 中删除:

   18 UIKit 0x2fd3cccc -[UIScrollView removeFromSuperview] + 60

4. 正在评估约束条件:

   12 基础 0x2de4a918 -[NSISEngine minimizeConstantInObjectiveRowWithHead:] + 180

5. 约束引擎想要将一些错误记录到控制台:

   11 基础 0x2de0b78e NSLog + 22

6. 约束引擎尝试生成一个字符串:

   5 Foundation 0x2df73336 -[NSISObjectiveLinearExpression 描述] + 122

7. 发生异常，因为它试图将一个nil 对象添加到一个NSArray。

如果您的约束规则(在代码中完成)引用了另一个不再存在的 View ，则可能会发生这种情况。您应该检查您的约束规则并设置断点以找出导致崩溃的原因。