蘋果官方 Crash文件分析方法 （iOS系統Crash文件分析方法）
對於提交的蘋果官方的app，在審覈的時候會給咱們一些crash文件，對於這些有用的文件，裏面是關於咱們的bug的一些信息，那麼該如何去調試呢
第一步：在任意目錄建立一個目錄，用來調試crash，我這裏建立一個crash目錄
第二步：將以前Archive的文件copy到crash目錄裏面ios
其中包括兩個文件.app和.app.dSYMc++
若是找不到的話能夠按照下面的步驟進行bash
先到Organizerapp
1，找到提交那個時刻的Archive文件，選中，show in Finderide
2，而後到達這裏，而後再選中紅色區域，會出現3中所示的提示svn
3，ok顯示包內容，而後本身找找吧，確定會有的工具
copy就行了oop
第三步：將symbolicatecrash工具copy到crash目錄測試
找不到這個文件能夠去spa
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/Library/PrivateFrameworks/DTDeviceKit.framework/Versions/A/Resources
這裏看看，應該就會有了。
第四步：將要調試的crash文件copy到crash目錄
這個crash文件，這裏是來自蘋果官方的，其實有時候也是來自其餘的用戶的電腦上的。
第五步：經過命令進行測試
打開終端，轉到crash目錄
執行以下命令：
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.
/symbolicatecrash
.
/2013-08-16-035933_DLiPad
.crash .
/appname
.app.dSYM > symbol.crash
cat
.
/symbol
.crash
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結果以下：
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Incident Identifier: 5434D911-E207-4D79-9139-40EA4EA76B45
CrashReporter Key: d11ed3a4adbb0d9ca4d6016e73e439640f95f289
Hardware Model: xxx
Process: appname [8158]
Path: /var/mobile/Applications/2AB1E8EB-6ECE-44F4-8195-4042339DD359/appname.app/appname
Identifier: appname
Version: ??? (???)
Code Type: ARM (Native)
Parent Process: launchd [1]
Date/Time: 2013-08-16 03:59:33.513 +0800
OS Version: iOS 6.1.3 (10B329)
Report Version: 104
Exception Type: EXC_CRASH (SIGABRT)
Exception Codes: 0x0000000000000000, 0x0000000000000000
Crashed Thread: 0
Last Exception Backtrace:
0 CoreFoundation 0x3126029e 0x3119e000 + 795294
1 libobjc.A.dylib 0x3910497a 0x390fc000 + 35194
2 UIKit 0x333f537c 0x33065000 + 3736444
3 UIKit 0x3323758e 0x33065000 + 1910158
4 UIKit 0x330c079c 0x33065000 + 374684
5 UIKit 0x33068c34 0x33065000 + 15412
6 UIKit 0x330686c8 0x33065000 + 14024
7 UIKit 0x33068116 0x33065000 + 12566
8 GraphicsServices 0x34d5c59e 0x34d56000 + 26014
9 GraphicsServices 0x34d5c1ce 0x34d56000 + 25038
10 CoreFoundation 0x3123516e 0x3119e000 + 618862
11 CoreFoundation 0x31235112 0x3119e000 + 618770
12 CoreFoundation 0x31233f94 0x3119e000 + 614292
13 CoreFoundation 0x311a6eb8 0x3119e000 + 36536
14 CoreFoundation 0x311a6d44 0x3119e000 + 36164
15 UIKit 0x330bf480 0x33065000 + 369792
16 UIKit 0x330bc2fc 0x33065000 + 357116
17 appname 0x000cf358 0xce000 + 4952
18 libdyld.dylib 0x3953bb1c 0x3953a000 + 6940
Thread 0 name: Dispatch queue: com.apple.main-thread
Thread 0 Crashed:
0 libsystem_kernel.dylib 0x39602350 __pthread_kill + 8
1 libsystem_c.dylib 0x3957911e pthread_kill + 54
2 libsystem_c.dylib 0x395b596e abort + 90
3 libc++abi.dylib 0x38b53d4a abort_message + 70
4 libc++abi.dylib 0x38b50ff4 default_terminate() + 20
5 libobjc.A.dylib 0x39104a74 _objc_terminate() + 144
6 libc++abi.dylib 0x38b51078 safe_handler_caller(void (*)()) + 76
7 libc++abi.dylib 0x38b51110 std::terminate() + 16
8 libc++abi.dylib 0x38b52594 __cxa_rethrow + 84
9 libobjc.A.dylib 0x391049cc objc_exception_rethrow + 8
10 CoreFoundation 0x311a6f1c CFRunLoopRunSpecific + 452
11 CoreFoundation 0x311a6d44 CFRunLoopRunInMode + 100
12 UIKit 0x330bf480 -[UIApplication _run] + 664
13 UIKit 0x330bc2fc UIApplicationMain + 1116
14 appname 0x000cf358 0xce000 + 4952
15 libdyld.dylib 0x3953bb1c start + 0
Thread 1:
0 libsystem_kernel.dylib 0x39602d98 __workq_kernreturn + 8
1 libsystem_c.dylib 0x39550cf6 _pthread_workq_return + 14
2 libsystem_c.dylib 0x39550a12 _pthread_wqthread + 362
3 libsystem_c.dylib 0x395508a0 start_wqthread + 4
Thread 2 name: Dispatch queue: com.apple.libdispatch-manager
Thread 2:
0 libsystem_kernel.dylib 0x395f2648 kevent64 + 24
1 libdispatch.dylib 0x39522974 _dispatch_mgr_invoke + 792
2 libdispatch.dylib 0x39522654 _dispatch_mgr_thread$VARIANT$mp + 32
Thread 3:
0 libsystem_kernel.dylib 0x39602d98 __workq_kernreturn + 8
1 libsystem_c.dylib 0x39550cf6 _pthread_workq_return + 14
2 libsystem_c.dylib 0x39550a12 _pthread_wqthread + 362
3 libsystem_c.dylib 0x395508a0 start_wqthread + 4
Thread 4 name: WebThread
Thread 4:
0 libsystem_kernel.dylib 0x395f1eb4 mach_msg_trap + 20
1 libsystem_kernel.dylib 0x395f2048 mach_msg + 36
2 CoreFoundation 0x31235040 __CFRunLoopServiceMachPort + 124
3 CoreFoundation 0x31233d9e __CFRunLoopRun + 878
4 CoreFoundation 0x311a6eb8 CFRunLoopRunSpecific + 352
5 CoreFoundation 0x311a6d44 CFRunLoopRunInMode + 100
6 WebCore 0x37196500 RunWebThread(void*) + 440
7 libsystem_c.dylib 0x3955b30e _pthread_start + 306
8 libsystem_c.dylib 0x3955b1d4 thread_start + 4
Thread 0 crashed with ARM Thread State (32-bit):
r0: 0x00000000 r1: 0x00000000 r2: 0x00000000 r3: 0x3b0f8534
r4: 0x00000006 r5: 0x3b0f8b88 r6: 0x1d844f24 r7: 0x2fd329f4
r8: 0x1d844f00 r9: 0x00000300 r10: 0x334de04b r11: 0x1c535350
ip: 0x00000148 sp: 0x2fd329e8 lr: 0x39579123 pc: 0x39602350
cpsr: 0x00000010
......
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再執行以下命令：
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dwarfdump --lookup 0x000cf358 --arch armv7 appname.app.dSYM/
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關鍵是在這裏0x000cf358，他是來自這裏的
0 libsystem_kernel.dylib 0x39602350 __pthread_kill + 8
1 libsystem_c.dylib 0x3957911e pthread_kill + 54
2 libsystem_c.dylib 0x395b596e abort + 90
3 libc++abi.dylib 0x38b53d4a abort_message + 70
4 libc++abi.dylib 0x38b50ff4 default_terminate() + 20
5 libobjc.A.dylib 0x39104a74 _objc_terminate() + 144
6 libc++abi.dylib 0x38b51078 safe_handler_caller(void (*)()) + 76
7 libc++abi.dylib 0x38b51110 std::terminate() + 16
8 libc++abi.dylib 0x38b52594 __cxa_rethrow + 84
9 libobjc.A.dylib 0x391049cc objc_exception_rethrow + 8
10 CoreFoundation 0x311a6f1c CFRunLoopRunSpecific + 452
11 CoreFoundation 0x311a6d44 CFRunLoopRunInMode + 100
12 UIKit 0x330bf480 -[UIApplication _run] + 664
13 UIKit 0x330bc2fc UIApplicationMain + 1116
14 應用的名稱 0x000cf358 0xce000 + 4952
15 libdyld.dylib 0x3953bb1c start + 0
結果以下：
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----------------------------------------------------------------------
File: appname.app.dSYM/Contents/Resources/DWARF/appname (armv7)
----------------------------------------------------------------------
Looking up address: 0x00000000000cf358 in .debug_info... found!
0x0015d390:
Compile Unit: length = 0x00001fc6 version = 0x0002 abbr_offset =
0x00000000 addr_size = 0x04 (next CU at 0x0015f35a)
0x0015d39b: TAG_compile_unit [1] *
AT_producer( "Apple LLVM version 4.2 (clang-425.0.24) (based on LLVM 3.2svn)" )
AT_language( DW_LANG_ObjC )
AT_name( "/Users/zhy/Downloads/ios/vlink_app_xunyi/xunYi7/library/ASIHttpRequest/ASIDownloadCache.m" )
AT_low_pc( 0x000ccfc0 )
AT_stmt_list( 0x0002cf0b )
AT_comp_dir( "/Users/zhy/Downloads/ios/vlink_app_xunyi" )
AT_APPLE_major_runtime_vers( 0x02 )
0x0015dd38: TAG_subprogram [53] *
AT_name( "-[ASIDownloadCache isCachedDataCurrentForRequest:]" )
AT_decl_file( "/Users/zhy/Downloads/ios/vlink_app_xunyi/xunYi7/library/ASIHttpRequest/ASIDownloadCache.m" )
AT_decl_line( 315 )
AT_prototyped( 0x01 )
AT_type( {0x0015d490} ( BOOL ) )
AT_APPLE_isa( 0x01 )
AT_low_pc( 0x000cf278 )
AT_high_pc( 0x000cf9e2 )
AT_frame_base( r7 )
AT_object_pointer( {0x0015dd54} )
0x0015dd86: TAG_lexical_block [10] *
AT_low_pc( 0x000cf2ca )
AT_high_pc( 0x000cf9de )
Line table dir : '/Users/zhy/Downloads/ios/vlink_app_xunyi/xunYi7/library/ASIHttpRequest'
Line table file: 'ASIDownloadCache.m' line 320, column 3 with start address 0x00000000000cf340
Looking up address: 0x00000000000cf358 in .debug_frame... found!
0x00007290: FDE
length: 0x0000000c
CIE_pointer: 0x00000000
start_addr: 0x000cf278 -[ASIDownloadCache isCachedDataCurrentForRequest:]
range_size: 0x0000076a (end_addr = 0x000cf9e2)
Instructions: 0x000cf278: CFA=4294967295+4294967295
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到這裏就知道問題所在了吧
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Line table dir : '/Users/zhy/Downloads/ios/vlink_app_xunyi/xunYi7/library/ASIHttpRequest'
Line table file: 'ASIDownloadCache.m' line 320, column 3 with start address 0x00000000000cf340
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若是有多個crash文件的話，能夠重複操做一遍就行了。