How to symbolicate Mac OSX crash reports issued by Apple? - xcode

Question

For iOS crash reports, it is sufficient to drag and drop the crash report to the Organizer.
Symbolicating iPhone App Crash Reports
But this method doesn't work for Mac OSX crash reports.
How can I symbolicate my Mac OSX crash report ?
Thanks !!

Answer 1

You can use the atos command to get the line number where the app crashed.
Heres a quick guide:
Create a directory for your working files
Open Xcode, select Window->Organizer, goto the Archive tab and find the version of your app that experienced the crash.
Right click on the app archive and select "Show in Finder"
Right click on the .xarchive, select "Show Contents" and find the AppName.dSYM directory and the app and copy them to your working folder
Copy the stack trace to your working folder
Open terminal and change to your working folder. An ls should show YourApp.app YourApp.app.dSYM stacktrace.txt
Open your stack trace in TextEdit. Your going to need to find the Code Type from the header (system architecture - eg. X86-64) and the addresses of the crash. Search through the threads to find the one that crashed (it will say something like "Thread 2 Crashed") then find your objects. You need the two addresses (hex numbers) from that line to get the code line.
Once you've got all the information you need to run the following in the terminal:
atos -o YourApp.app/Contents/MacOS/YourApp -arch x86_64 -l [load-address] [address]
For example, heres an extract from a stacktrace:
Process: MyApp [228]
Path: /Applications/MyApp.app/Contents/MacOS/MyApp
Identifier: uk.co.company.app
Version: 1.0 (1)
App Item ID: 774943227
App External ID: 218062633
Code Type: X86-64 (Native)
Parent Process: launchd [154]
Responsible: MyApp [228]
User ID: 501
Date/Time: 2013-12-17 10:20:45.816 +0100
OS Version: Mac OS X 10.9 (13A603)
Report Version: 11
Anonymous UUID: 7AA662B1-7696-A2C5-AF56-9D4BA2CE9515
Crashed Thread: 2
Exception Type: EXC_CRASH (SIGABRT)
Exception Codes: 0x0000000000000000, 0x0000000000000000
<snip>
Thread 2 Crashed:
0 libsystem_kernel.dylib 0x00007fff8b95a866 __pthread_kill + 10
1 libsystem_pthread.dylib 0x00007fff8bf4f35c pthread_kill + 92
2 libsystem_c.dylib 0x00007fff87571bba abort + 125
3 libsystem_malloc.dylib 0x00007fff897ae093 free + 411
4 uk.co.company.app 0x0000000103580606 0x10356e000 + 75270
5 uk.co.company.app 0x00000001035803da 0x10356e000 + 74714
6 com.apple.Foundation 0x00007fff8d00970b __NSThread__main__ + 1318
7 libsystem_pthread.dylib 0x00007fff8bf4e899 _pthread_body + 138
8 libsystem_pthread.dylib 0x00007fff8bf4e72a _pthread_start + 137
9 libsystem_pthread.dylib 0x00007fff8bf52fc9 thread_start + 13
I can see that the "Code Type" is x86_64, that Thread 2 crashed, and that on line 4 my code was running so we have the addresses we need. Using this information I run the following:
$ atos -o MyApp.app/Contents/MacOS/MyApp -arch x86_64 -l 0x10356e000 0x0000000103580606
This returns:
got symbolicator for MyApp.app/Contents/MacOS/MyApp, base address 100000000
obj_free (in MyApp) (somefile.c:135)
Telling me my app crashed at line 135 of somefile.c

Answer 2

#inkjet 's comment above deserves its own answer.
He built an app that does a full symbolication from your dsym and .crash file.
A free alternative to Sumbolon that I made: bch.us.to/apps/macsymbolicator — It uses atos in the same way described by Rich Able below. – inket Dec 24 '13 at 4:39
putting it all together:
download Mac Symbolicator from here
Open Xcode, select Window->Organizer, goto the Archive tab and find
the version of your app that experienced the crash.
Right click on the app archive and select "Show in Finder"
Right click on the .xarchive, select "Show Contents" and find the
AppName.dSYM directory
Drag your .crash file and AppName.dsym to Sumbolon
Magic happens

Answer 3

this link
this link explains everything to symbolicate the crash log with the line no of crash. you just need to have .dsyms file, .app file and crash log in same folder
i looked around and find nothing better than this. so i am posting it by hoping this will help others.