我一直在调试我们的 Adobe AIR 应用程序，因为它确实崩溃得很厉害。经过几天的追踪，至少有一个应用程序在 AIR 3.5、3.7 和 AIR 3.8 beta 上崩溃（你看 - 我试过了......）。
AIR 3.5 最终报告了这个跟踪输出：
ScrollerTouch.onTargetMouseDown()-F true // A
ScrollerTouch.onTargetMouseDown()-I // B
targetV [object ScrollPane] // C
CRASH! // D
Exception fault: ReferenceError: Error #1065: Variable ::_fileSystemType is not defined.
at global/trace()[int:49]
at de.superclass.control::ScrollerTouch/onTargetMouseDown()[/path/to/.../ScrollerTouch.as:381]
at de.superclass.control::ScrollerTouch/onTargetMouseDown()
ActionScript 代码被剪断：
trace("ScrollerTouch.onTargetMouseDown()-F", _scrollHorizontal ); // A
switch ( _scrollPolicyVertical )
{
case ScrollPolicy.ON:
trace("ScrollerTouch.onTargetMouseDown()-G");
_scrollVertical = true;
break;
case ScrollPolicy.OFF:
trace("ScrollerTouch.onTargetMouseDown()-H");
_scrollVertical = false;
break;
case ScrollPolicy.AUTO:
trace("ScrollerTouch.onTargetMouseDown()-I"); // B
default:
trace( "targetV", targetV ); // C
try
{
trace( "targetV.height", targetV.height );
}
catch( e: Error )
{
trace( "CRASH!" ); // D
}
// line 381 throws the hard crash:
_scrollVertical = Boolean( targetV.height < targetV.contentHeight );
trace( "targetV.xxx" );
trace( "targetV.contentHeight", targetV.contentHeight );
return;
}
因此，在第 381 行访问 targetV.height 以某种方式非常难以崩溃（应用程序退出），但我不知道为什么。实际上，这段代码工作了很长时间......
附加信息：
我再次更改了代码，但应用程序不断崩溃。这就是 XCode-Console 所说的：
Jul 4 21:25:48 iRad-3 ReportCrash[1206] <Notice>: Formulating crash report for process APP_NAME[1191]
Jul 4 21:25:48 iRad-3 backboardd[26] <Warning>: BKSendGSEvent ERROR sending event type 3001: (ipc/send) invalid destination port (0x10000003)
Jul 4 21:25:48 iRad-3 backboardd[26] <Warning>: BKSendGSEvent ERROR sending event type 3001: (ipc/send) invalid destination port (0x10000003)
Jul 4 21:25:48 iRad-3 backboardd[26] <Warning>: BKSendGSEvent ERROR sending event type 3001: (ipc/send) invalid destination port (0x10000003)
Jul 4 21:25:48 iRad-3 ReportCrash[1206] <Error>: libMobileGestalt copySystemVersionDictionaryValue: Could not lookup ReleaseType from system version dictionary
Jul 4 21:25:48 iRad-3 com.apple.launchd[1] (UIKitApplication:APP_NAME_SPACE[0x469][1191]) <Warning>: (UIKitApplication:APP_NAME_SPACE[0x469]) Job appears to have crashed: Segmentation fault: 11
Jul 4 21:25:48 iRad-3 backboardd[26] <Warning>: Application 'UIKitApplication:APP_NAME_SPACE[0x469]' exited abnormally with signal 11: Segmentation fault: 11
Jul 4 21:25:48 iRad-3 ReportCrash[1206] <Notice>: Saved crashreport to /var/mobile/Library/Logs/CrashReporter/APP_NAME_2013-07-04-212547_iRa d-3.plist using uid: 0 gid: 0, synthetic_euid: 501 egid: 0
Jul 4 21:25:55 iRad-3 kernel[0] <Debug>: launchd[1207] Builtin profile: container (sandbox)
Jul 4 21:25:55 iRad-3 kernel[0] <Debug>: launchd[1207] Container: /private/var/mobile/Applications/CDA04278-5D34-4609-BE71-D66FB16794C1 (sandbox)
Jul 4 21:25:56 iRad-3 kernel[0] <Debug>: launchd[1208] Builtin profile: PasteBoard (sandbox)
Jul 4 21:25:56 iRad-3 backboardd[26] <Warning>: CoreAnimation: updates deferred for too long
Jul 4 21:25:56 iRad-3 backboardd[26] <Warning>: CoreAnimation: timed out fence 2685b
这是崩溃日志：
Incident Identifier: 17615510-16A5-43B9-B8A5-2ED2C5A2EEBA
CrashReporter Key: 3f85661334bfff23c2d4128bc63674d30647c15b
Hardware Model: iPad3,3
Process: APP_NAME [1191]
Path: /var/mobile/Applications/CDA04278-5D34-4609-BE71-D66FB16794C1/APP_NAM E.app/APP_NAME
Identifier: APP_NAME
Version: ??? (???)
Code Type: ARM (Native)
Parent Process: launchd [1]
Date/Time: 2013-07-04 21:25:47.935 +0200
OS Version: iOS 6.1.3 (10B329)
Report Version: 104
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x4095e008
Crashed Thread: 0
Thread 0 name: Dispatch queue: com.apple.main-thread
Thread 0 Crashed:
0 APP_NAME 0x008c71c8 0x1000 + 9200072
1 APP_NAME 0x005284ac 0x1000 + 5403820
2 APP_NAME 0x007b5edc 0x1000 + 8081116
3 APP_NAME 0x00002928 0x1000 + 6440
4 APP_NAME 0x0045f128 0x1000 + 4579624
5 APP_NAME 0x0045f5f8 0x1000 + 4580856
6 APP_NAME 0x0045eeb4 0x1000 + 4578996
7 APP_NAME 0x0045eab4 0x1000 + 4577972
8 APP_NAME 0x003d98d8 0x1000 + 4032728
9 APP_NAME 0x003c59c0 0x1000 + 3951040
10 APP_NAME 0x00443d24 0x1000 + 4468004
11 APP_NAME 0x009d5448 0x1000 + 10306632
12 APP_NAME 0x009d509c 0x1000 + 10305692
13 APP_NAME 0x009d4ad0 0x1000 + 10304208
14 APP_NAME 0x009d6618 0x1000 + 10311192
15 APP_NAME 0x00cf4d40 0x1000 + 13581632
16 APP_NAME 0x00a5f418 0x1000 + 10871832
17 APP_NAME 0x008d810c 0x1000 + 9269516
18 APP_NAME 0x009b45ac 0x1000 + 10171820
19 APP_NAME 0x009b5140 0x1000 + 10174784
20 UIKit 0x347ff51e -[UIWindow _sendTouchesForEvent:] + 314
21 UIKit 0x347ec7fc -[UIApplication sendEvent:] + 376
22 UIKit 0x347ec116 _UIApplicationHandleEvent + 6150
23 GraphicsServices 0x364e05a0 _PurpleEventCallback + 588
24 GraphicsServices 0x364e01ce PurpleEventCallback + 30
25 CoreFoundation 0x329b9170 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 32
26 CoreFoundation 0x329b9112 __CFRunLoopDoSource1 + 134
27 CoreFoundation 0x329b7f94 __CFRunLoopRun + 1380
28 CoreFoundation 0x3292aeb8 CFRunLoopRunSpecific + 352
29 CoreFoundation 0x3292ad44 CFRunLoopRunInMode + 100
30 GraphicsServices 0x364df2e6 GSEventRunModal + 70
31 UIKit 0x348402fc UIApplicationMain + 1116
32 APP_NAME 0x008f5c0c 0x1000 + 9391116
33 APP_NAME 0x00d2b0e0 0x1000 + 13803744
Thread 1 name: Dispatch queue: com.apple.libdispatch-manager
Thread 1:
0 libsystem_kernel.dylib 0x3ad76648 kevent64 + 24
1 libdispatch.dylib 0x3aca6974 _dispatch_mgr_invoke + 792
2 libdispatch.dylib 0x3aca6654 _dispatch_mgr_thread$VARIANT$mp + 32
Thread 2 name: WebThread
Thread 2:
0 libsystem_kernel.dylib 0x3ad75eb4 mach_msg_trap + 20
1 libsystem_kernel.dylib 0x3ad76048 mach_msg + 36
2 CoreFoundation 0x329b9040 __CFRunLoopServiceMachPort + 124
3 CoreFoundation 0x329b7d9e __CFRunLoopRun + 878
4 CoreFoundation 0x3292aeb8 CFRunLoopRunSpecific + 352
5 CoreFoundation 0x3292ad44 CFRunLoopRunInMode + 100
6 WebCore 0x3891a500 RunWebThread(void*) + 440
7 libsystem_c.dylib 0x3acdf30e _pthread_start + 306
8 libsystem_c.dylib 0x3acdf1d4 thread_start + 4
Thread 3:
0 libsystem_kernel.dylib 0x3ad75eb4 mach_msg_trap + 20
1 libsystem_kernel.dylib 0x3ad76048 mach_msg + 36
2 APP_NAME 0x00480b04 0x1000 + 4717316
3 libsystem_c.dylib 0x3acdf30e _pthread_start + 306
4 libsystem_c.dylib 0x3acdf1d4 thread_start + 4
Thread 4:
0 libsystem_kernel.dylib 0x3ad8608c __psynch_cvwait + 24
1 libsystem_c.dylib 0x3acd7d2a _pthread_cond_wait + 642
2 libsystem_c.dylib 0x3ace1f14 pthread_cond_wait + 36
3 APP_NAME 0x00a33ad4 0x1000 + 10693332
4 APP_NAME 0x0097d9e0 0x1000 + 9947616
5 APP_NAME 0x00a33938 0x1000 + 10692920
6 APP_NAME 0x00a3398c 0x1000 + 10693004
7 APP_NAME 0x00a336b8 0x1000 + 10692280
8 libsystem_c.dylib 0x3acdf30e _pthread_start + 306
9 libsystem_c.dylib 0x3acdf1d4 thread_start + 4
Thread 5:
0 libsystem_kernel.dylib 0x3ad8608c __psynch_cvwait + 24
1 libsystem_c.dylib 0x3acd7d2a _pthread_cond_wait + 642
2 libsystem_c.dylib 0x3ace1f14 pthread_cond_wait + 36
3 APP_NAME 0x00a33ad4 0x1000 + 10693332
4 APP_NAME 0x0097d9e0 0x1000 + 9947616
5 APP_NAME 0x00a33938 0x1000 + 10692920
6 APP_NAME 0x00a3398c 0x1000 + 10693004
7 APP_NAME 0x00a336b8 0x1000 + 10692280
8 libsystem_c.dylib 0x3acdf30e _pthread_start + 306
9 libsystem_c.dylib 0x3acdf1d4 thread_start + 4
Thread 6:
0 libsystem_kernel.dylib 0x3ad866a4 __semwait_signal + 24
1 libsystem_c.dylib 0x3ace43ce nanosleep + 138
2 APP_NAME 0x00a33724 0x1000 + 10692388
3 APP_NAME 0x00913638 0x1000 + 9512504
4 APP_NAME 0x009135d8 0x1000 + 9512408
5 APP_NAME 0x00a33938 0x1000 + 10692920
6 APP_NAME 0x00a3398c 0x1000 + 10693004
7 APP_NAME 0x00a336b8 0x1000 + 10692280
8 libsystem_c.dylib 0x3acdf30e _pthread_start + 306
9 libsystem_c.dylib 0x3acdf1d4 thread_start + 4
Thread 7:
0 libsystem_kernel.dylib 0x3ad8608c __psynch_cvwait + 24
1 libsystem_c.dylib 0x3acd7d2a _pthread_cond_wait + 642
2 libsystem_c.dylib 0x3acd7aa0 pthread_cond_timedwait + 40
3 APP_NAME 0x00a33b54 0x1000 + 10693460
4 APP_NAME 0x000a7254 0x1000 + 680532
5 APP_NAME 0x00a33938 0x1000 + 10692920
6 APP_NAME 0x00a3398c 0x1000 + 10693004
7 APP_NAME 0x00a336b8 0x1000 + 10692280
8 libsystem_c.dylib 0x3acdf30e _pthread_start + 306
9 libsystem_c.dylib 0x3acdf1d4 thread_start + 4
Thread 8:
0 libsystem_kernel.dylib 0x3ad866a4 __semwait_signal + 24
1 libsystem_c.dylib 0x3ace43ce nanosleep + 138
2 APP_NAME 0x00a33724 0x1000 + 10692388
3 APP_NAME 0x008caff0 0x1000 + 9215984
4 APP_NAME 0x008cae08 0x1000 + 9215496
5 APP_NAME 0x00a33938 0x1000 + 10692920
6 APP_NAME 0x00a3398c 0x1000 + 10693004
7 APP_NAME 0x00a336b8 0x1000 + 10692280
8 libsystem_c.dylib 0x3acdf30e _pthread_start + 306
9 libsystem_c.dylib 0x3acdf1d4 thread_start + 4
Thread 9 name: com.apple.NSURLConnectionLoader
Thread 9:
0 libsystem_kernel.dylib 0x3ad75eb4 mach_msg_trap + 20
1 libsystem_kernel.dylib 0x3ad76048 mach_msg + 36
2 CoreFoundation 0x329b9040 __CFRunLoopServiceMachPort + 124
3 CoreFoundation 0x329b7d9e __CFRunLoopRun + 878
4 CoreFoundation 0x3292aeb8 CFRunLoopRunSpecific + 352
5 CoreFoundation 0x3292ad44 CFRunLoopRunInMode + 100
6 Foundation 0x332773d0 +[NSURLConnection(Loader) _resourceLoadLoop:] + 304
7 Foundation 0x332fae80 __NSThread__main__ + 968
8 libsystem_c.dylib 0x3acdf30e _pthread_start + 306
9 libsystem_c.dylib 0x3acdf1d4 thread_start + 4
Thread 10 name: com.apple.CFSocket.private
Thread 10:
0 libsystem_kernel.dylib 0x3ad86594 __select + 20
1 CoreFoundation 0x329bd1f2 __CFSocketManager + 674
2 libsystem_c.dylib 0x3acdf30e _pthread_start + 306
3 libsystem_c.dylib 0x3acdf1d4 thread_start + 4
Thread 11:
0 libsystem_kernel.dylib 0x3ad86d98 __workq_kernreturn + 8
1 libsystem_c.dylib 0x3acd4cf6 _pthread_workq_return + 14
2 libsystem_c.dylib 0x3acd4a12 _pthread_wqthread + 362
3 libsystem_c.dylib 0x3acd48a0 start_wqthread + 4
Thread 12:
0 libsystem_kernel.dylib 0x3ad8608c __psynch_cvwait + 24
1 libsystem_c.dylib 0x3acd7d68 _pthread_cond_wait + 704
2 libsystem_c.dylib 0x3aceb080 pthread_cond_timedwait_relative_np + 12
3 APP_NAME 0x00a7e558 0x1000 + 10999128
4 APP_NAME 0x00a7e200 0x1000 + 10998272
5 APP_NAME 0x00a7e0f8 0x1000 + 10998008
6 APP_NAME 0x00a33938 0x1000 + 10692920
7 APP_NAME 0x00a3398c 0x1000 + 10693004
8 APP_NAME 0x00a336b8 0x1000 + 10692280
9 libsystem_c.dylib 0x3acdf30e _pthread_start + 306
10 libsystem_c.dylib 0x3acdf1d4 thread_start + 4
Thread 13:
0 libsystem_kernel.dylib 0x3ad86d98 __workq_kernreturn + 8
1 libsystem_c.dylib 0x3acd4cf6 _pthread_workq_return + 14
2 libsystem_c.dylib 0x3acd4a12 _pthread_wqthread + 362
3 libsystem_c.dylib 0x3acd48a0 start_wqthread + 4
Thread 0 crashed with ARM Thread State (32-bit):
r0: 0x4095e000 r1: 0x2fdfdf58 r2: 0x0052844c r3: 0x2fdfdf1c
r4: 0x00000221 r5: 0x084d8060 r6: 0x2fdfdf14 r7: 0x2fdfdf88
r8: 0x2fdfdf20 r9: 0x000003fe r10: 0x4095e000 r11: 0x00000000
ip: 0x000002fc sp: 0x2fdfdf10 lr: 0x005284b0 pc: 0x008c71c8
cpsr: 0x20000010
Binary image...
当我在监听鼠标事件的特定显示对象上触摸并移动一点时，会立即发生这种情况，向下移动以拖动它的内容。我认为这与事件系统有关。但我想我绝对是瞎子。
所以第一个问题：请问 ::_fileSystemType 是什么？
谁知道崩溃日志和 XCode 控制台输出的含义？