How to symbolicate crash log Xcode?

Question

Writing this answer as much for the community as for myself.

If there ever are problems symbolicating a crash report, one can overcome them as follows:

1. Create a separate folder, copy Foo.app and Foo.app.dSYM from the corresponding .xcarchive into the folder. Also copy the .crash report into the folder.

2. Open the crash report in TextEdit or elsewhere, go to the Binary Images: section, and copy the first address there (e.g. 0xd7000).

3. cd into the folder. Now you can run the following command:

   xcrun atos -o Foo.app/Foo -arch arm64 -l 0xd7000 0x0033f9bb

This will symbolicate the symbol at address 0x0033f9bb. Please make sure to pick the correct value for the -arch option (can be obtaned from the first line in the Binary Images: section, or figured out from the Hardware Model: in the crash report and the app's supported archs).

You can also copy the necessary addresses (e.g. a thread call stack) from the crash report directly into a text file (in TextEdit, hold Option and select the necessary text block, or copy and cut), to get something like this:

0x000f12fb
0x002726b7
0x0026d415
0x001f933b
0x001f86d3

Now you can save this into a text file, e.g. addr.txt, and run the following command:

xcrun atos -o Foo.app/Foo -arch arm64 -l 0xd7000 -f addr.txt

This will give a nice symbolication for all the addresses at once.

P.S.

Before doing the above, it's worth checking that everything is set up correctly (as atos will happily report something for basically any supplied address).

To do the checking, open the crash report, and go to the end of the call stack for Thread 0. The first line from the end to list your app (usually the second one), e.g.:

34  Foo                    0x0033f9bb 0xd7000 + 2525627

should be the main() call. Symbolicating the address (0x0033f9bb in this case) as described above should confirm that this is indeed main() and not some random method or function.

If the address is not that of main(), check your load address (-l option) and arch (-arch option).

P.P.S.

If the above doesn't work due to bitcode, download the dSYM for your build from iTunes Connect, extract the executable binary from the dSYM (Finder > Show Package Contents), copy it into the directory, and use it (i.e. Foo) as the argument to atos, instead of the Foo.app/Foo.

You can refer this one too, I have written step by step procedure of Manual Crash Re-Symbolication.

Crash Re-Symbolication

STEP 1

Move all the above files (MyApp.app, MyApp-dSYM.dSYM and MyApp-Crash-log.crash) into a Folder with a convenient name wherever you can go using Terminal easily.

For me, Desktop is the most easily reachable place ;) So, I have moved these three files into a folder MyApp at Desktop.

STEP 2

Now its turn of Finder, Go to the path from following whichever is applicable for your XCODE version.

Use this command to find the symbolicatecrash script file,
find /Applications/Xcode.app -name symbolicatecrash

Xcode 8, Xcode 9, Xcode 11 /Applications/Xcode.app/Contents/SharedFrameworks/DVTFoundation.framework/Versions/A/Resources/symbolicatecrash

Xcode 7.3 /Applications/Xcode.app/Contents/SharedFrameworks/DVTFoundation.framework/Versions/A/Resources/symbolicatecrash

XCode 7 /Applications/Xcode.app/Contents/SharedFrameworks/DTDeviceKitBase.framework/Versions/A/Resources/symbolicatecrash

Xcode 6 /Applications/Xcode.app/Contents/SharedFrameworks/DTDeviceKitBase.framework/Versions/A/Resources

Lower then Xcode 6 Contents/Developer/Platforms/iPhoneOS.platform/Developer/Library/PrivateFrameworks/DTDeviceKitBase.framework/Versions/A/Resources

Or Contents/Developer/Platforms/iPhoneOS.platform/Developer/Library/PrivateFrameworks/DTDeviceKit.framework/Versions/A/Resources

STEP 3

Add the found symbolicatecrash script file's directory to $PATH env variable like this: sudo vim /etc/paths.d/Xcode-symbolicatecrash and paste the script file's directory and save the file. When opening a new terminal, you can call symbolicatecrash at any folder as commands located in /usr/bin.

Or

Copy symbolicatecrash file from this location, and paste it to the Desktop/MyApp (Wait… Don’t blindly follow me, I am pasting sybolicatecrash file in folder MyApp, one that you created in step one at your favorite location, having three files.)

STEP 4

Open Terminal, and CD to the MyApp Folder.

cd Desktop/MyApp — Press Enter
export DEVELOPER_DIR=$(xcode-select --print-path)

 — Press Enter

./symbolicatecrash -v MyApp-Crash-log.crash MyApp.dSYM

 — Press Enter

That’s it !! Symbolicated logs are on your terminal… now what are you waiting for? Now simply, Find out the Error and resolve it ;)

Ok I realised that you can do this:

1. In Xcode > Window > Devices, select a connected iPhone/iPad/etc top left.
2. View Device Logs
3. All Logs

You probably have a lot of logs there, and to make it easier to find your imported log later, you could just go ahead and delete all logs at this point... unless they mean money to you. Or unless you know the exact point of time the crash happened - it should be written in the file anyway... I'm lazy so I just delete all old logs (this actually took a while).

4. Just drag and drop your file into that list. It worked for me.

For me the .crash file was enough. Without .dSYM file and .app file.

I ran these two commands on the mac where I build the archive and it worked:

export DEVELOPER_DIR="/Applications/Xcode.app/Contents/Developer" 

/Applications/Xcode.app/Contents/SharedFrameworks/DVTFoundation.framework/Versions/A/Resources/symbolicatecrash  /yourPath/crash1.crash > /yourPath/crash1_symbolicated.crash