解决Crash的通用技术
1. symbolicatecrash
1.1 symbolicatecrash 的路径
/Developer/Platforms/iPhoneOS.platform/Developer/Library/PrivateFrameworks/DTDeviceKit.framework/Versions/A/Resources
在终端中设定别名
alias symbolicate="/Developer/Platforms/iPhoneOS.platform/Developer/Library/\ PrivateFrameworks/DTDeviceKit.framework/Versions/A/\ Resources/symbolicatecrash -v"
alias symbolicate="/Developer/Platforms/iPhoneOS.platform/Developer/Library/PrivateFrameworks/DTDeviceKit.framework/Versions/A/Resources/symbolicatecrash -v"
使用方法
symbolicate "MyApp_2011-05-10-170924-iPhone.crash" "MyApp.app"
1.2 symbolicatecrash on Xcode 8
"./Contents/SharedFrameworks/DVTFoundation.framework/Versions/A/Resources/symbolicatecrash" in the Xcode.app folder.
find . -name symbolicatecrash
https://stackoverflow.com/questions/39858554/where-is-located-symbolicatecrash-in-xcode-8
1.3 DEVELOPER_DIR not defined in symbolicatecrash
"Error: "DEVELOPER_DIR" is not defined at /Applications/Xcode.app/Contents/SharedFrameworks/DVTFoundation.framework/Versions/A/Resources/symbolicatecrash line 69. "
Solution: Objective c-Symbolication issue Error: “DEVELOPER_DIR” is not defined at ./symbolicatecrash line 60
Follow two steps to find and export missing DEVELOPER_DIR
- Output of
xcode-select --print-pathon terminal is the value ofDEVELOPER_DIR, something like,/Applications/Xcode.app/Contents/Developer - Run the following command in the Terminal app, or insert into
~/.bashrcif using Bash:export DEVELOPER_DIR=/Applications/Xcode.app/Contents/Developer
2. otool
otool
3. atos的使用
3.1 atos中 -l 参数
http://stackoverflow.com/questions/13364648/what-determines-the-load-address-for-an-ios-app
Q： -l <load-address>, 那么load-address是什么呢？
A：在iOS App的.crash文件中, "Binary Images" section下面一行就是类似:"0xddd - 0xdee YourAppName arch <UUID> path"
其中"0xddd" 就是需要的load-address.
4. How to find crash logs for iPhone applications on Mac, Vista and XP
http://aplus.rs/apple/how-to-find-crash-logs-for-iphone-applications-on-mac-vista-and-xp/
/*
0 CoreFoundation 0x310fa64f __exceptionPreprocess + 114
1 libobjc.A.dylib 0x35df3c5d objc_exception_throw + 24
2 CoreFoundation 0x310fe1bf -[NSObject(NSObject) doesNotRecognizeSelector:] + 102
3 CoreFoundation 0x310fd649 ___forwarding___ + 508
4 CoreFoundation 0x31074180 _CF_forwarding_prep_0 + 48
5 CoreData 0x30de0f11 -[_NSSQLCoreConnectionObsever _purgeCaches:] + 124
6 Foundation 0x30147183 _nsnote_callback + 142
7 CoreFoundation 0x310c920f __CFXNotificationPost_old + 402
8 CoreFoundation 0x31063eeb _CFXNotificationPostNotification + 118
9 Foundation 0x301445d3 -[NSNotificationCenter postNotificationName:object:userInfo:] + 70
10 UIKit 0x32809cb9 -[UIApplication _handleApplicationSuspend:eventInfo:] + 428
11 UIKit 0x327a3af9 -[UIApplication handleEvent:withNewEvent:] + 1916
12 UIKit 0x327a3215 -[UIApplication sendEvent:] + 44
13 UIKit 0x327a2c53 _UIApplicationHandleEvent + 5090
14 GraphicsServices 0x3224de77 PurpleEventCallback + 666
15 CoreFoundation 0x310d1a97 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 26
16 CoreFoundation 0x310d383f __CFRunLoopDoSource1 + 166
17 CoreFoundation 0x310d460d __CFRunLoopRun + 520
18 CoreFoundation 0x31064ec3 CFRunLoopRunSpecific + 230
19 CoreFoundation 0x31064dcb CFRunLoopRunInMode + 58
20 GraphicsServices 0x3224d41f GSEventRunModal + 114
21 GraphicsServices 0x3224d4cb GSEventRun + 62
22 UIKit 0x327cdd69 -[UIApplication _run] + 404
23 UIKit 0x327cb807 UIApplicationMain + 670
24 WeiBoPad 0x000036b7 main + 90
25 WeiBoPad 0x00003608 start + 40
*/
5. 总结的各种Crash
http://www.raywenderlich.com/23704/demystifying-ios-application-crash-logs
6. 如何判断.crash文件是否和YourAppName.app以及YourAppName.app.dSYM匹配?
Ref[6]
6.1 从Crash Report中找到Build UUID
.crash 文件中的section "Binary Images:"
" The first line in the "Binary Images:" section of a crash report includes the build UUID, inside <>, of the app that crashed.
The line ends with the full path of the app's executable on the system. "
6.2 从app binary中找到Build UUID
$ xcrun dwarfdump --uuid <PATH_TO_APP_EXECUTABLE>
6.3 从.dSYM文件中找到Build UUID
$ xcrun dwarfdump --uuid <PATH_TO_DSYM_FILE>
http://zcg9033586.blog.163.com/blog/static/175217310201142410503203/
需要注意命令: dwarfdump
Reference
1. http://kevincupp.com/2011/05/12/symbolicating-ios-crash-logs.html
2. Exploring iOS Crash Reports
http://www.plausible.coop/blog/?p=176 (推荐阅读)
3. 如何解读.crash文件中的"ARM Thread State" section
4. Understanding and Analyzing iOS Application Crash Reports
https://developer.apple.com/library/ios/technotes/tn2151/_index.html
5. How to reproduce bugs reported against App Store submissions
https://developer.apple.com/library/ios/qa/qa1764/_index.html
6. How to Match a Crash Report to a Build
https://developer.apple.com/library/ios/qa/qa1765/_index.html
Where To Go:
1. iOS ABI Function Call Guide
2. 命令学习
2.1 mdfind
mdfind "com_apple_xcode_dsym_uuids == someUUID"
2.2 dwarfdump
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人老了，需要记点东西