I submitted the app to Apple Review and was told it would crash. And I received the crashlog.txt from Apple.
I used a command like the following in terminal.app to symbolize the log.
$ cd ~/Desktop
$ export DEVELOPER_DIR=/Applications/Xcode.app/Contents/Developer/
$ /Applications/Xcode.app/Contents/SharedFrameworks/DVTFoundation.framework/Versions/A/Resources/symbolicatecrash -v ~/Desktop/clash_log.txt ~/Desktop/TestApp.app.dSYM > crash.txt
The result of symbolizing with the above command is as follows.
{"app_name":"TestApp","timestamp":"2021-05-25 20:26:46.00 -0700","app_version":"1.0.0","slice_uuid":"xxx-xxxx-xxxx-xxxx","adam_id":00000000,"build_version":"2","platform":2,"bundleID":"TestApp","share_with_app_devs":0,"is_first_party":0,"bug_type":"109","os_version":"iPhone OS 14.5 (18E199)","incident_id":"FD178D30-6E7E-4F1A-B6A8-A38F57B1238A","name":"TestApp"}
Incident Identifier: xxx-xxxx-xxxx-xxxx
CrashReporter Key: xxxxxxxxxxxxxxxxxxxxxx
Hardware Model: iPad11,3
Process: TestApp [959]
Path: /private/var/containers/Bundle/Application/xxx-xxxx-xxxx-xxxx/TestApp.app/TestApp
Identifier: TestApp
Version: 2 (1.0.0)
AppStoreTools: 12E262
Code Type: ARM-64 (Native)
Role: Foreground
Parent Process: launchd [1]
Coalition: TestApp [763]
Date/Time: 2021-05-25 20:26:45.5716 -0700
Launch Time: 2021-05-25 20:26:45.4202 -0700
OS Version: iPhone OS 14.5 (18E199)
Release Type: User
Baseband Version: n/a
Report Version: 104
Exception Type: EXC_BREAKPOINT (SIGTRAP)
Exception Codes: 0x0000000000000001, 0x00000001a34d8acc
Termination Signal: Trace/BPT trap: 5
Termination Reason: Namespace SIGNAL, Code 0x5
Terminating Process: exc handler [959]
Triggered by Thread: 6
Thread 0 name: Dispatch queue: com.apple.main-thread
Thread 0:
0 libFontParser.dylib 0x00000001dae602a8 0x1dae1e000 + 271016
1 libFontParser.dylib 0x00000001dae6020c 0x1dae1e000 + 270860
2 libFontParser.dylib 0x00000001dae5f418 0x1dae1e000 + 267288
3 libFontParser.dylib 0x00000001dae2547c 0x1dae1e000 + 29820
4 CoreGraphics 0x00000001a11ec664 0x1a11d1000 + 112228
5 CoreGraphics 0x00000001a14ed6a8 0x1a11d1000 + 3262120
6 CoreText 0x00000001a3cb25a4 0x1a3c61000 + 333220
7 CoreText 0x00000001a3c9dca8 0x1a3c61000 + 249000
8 CoreText 0x00000001a3cb0d10 0x1a3c61000 + 326928
9 CoreText 0x00000001a3c7fef0 0x1a3c61000 + 126704
10 CoreText 0x00000001a3c835b4 0x1a3c61000 + 140724
11 CoreText 0x00000001a3c9d60c 0x1a3c61000 + 247308
12 CoreText 0x00000001a3c9d47c 0x1a3c61000 + 246908
13 CoreText 0x00000001a3c889ec 0x1a3c61000 + 162284
14 UIFoundation 0x00000001a8b60250 0x1a8b2e000 + 205392
15 UIKitCore 0x00000001a2834bc0 0x1a176a000 + 17607616
16 UIKitCore 0x00000001a1afe63c 0x1a176a000 + 3753532
17 libdispatch.dylib 0x000000019f5407ec 0x19f53c000 + 18412
18 libdispatch.dylib 0x000000019f542084 0x19f53c000 + 24708
19 UIKitCore 0x00000001a1afe5ac 0x1a176a000 + 3753388
20 UIKitCore 0x00000001a1aff120 0x1a176a000 + 3756320
21 UIKitCore 0x00000001a1aff298 0x1a176a000 + 3756696
22 UIKitCore 0x00000001a1afe6b8 0x1a176a000 + 3753656
23 UIKitCore 0x00000001a1afe92c 0x1a176a000 + 3754284
24 UIKitCore 0x00000001a1afed44 0x1a176a000 + 3755332
25 UIKitCore 0x00000001a1b010d8 0x1a176a000 + 3764440
26 UIKitCore 0x00000001a1b0179c 0x1a176a000 + 3766172
27 UIKitCore 0x00000001a1b088e8 0x1a176a000 + 3795176
28 UIKitCore 0x00000001a2834a88 0x1a176a000 + 17607304
29 UIKitCore 0x00000001a2875c20 0x1a176a000 + 17873952
30 QuartzCore 0x00000001a2cfc91c 0x1a2b95000 + 1472796
31 QuartzCore 0x00000001a2cfce00 0x1a2b95000 + 1474048
32 UIKitCore 0x00000001a2861c74 0x1a176a000 + 17792116
33 UIKitCore 0x00000001a1b06328 0x1a176a000 + 3785512
34 UIKitCore 0x00000001a1af41b0 0x1a176a000 + 3711408
35 UIKitCore 0x00000001a1af1b08 0x1a176a000 + 3701512
36 UIKitCore 0x00000001a1af7ea0 0x1a176a000 + 3727008
37 UIKitCore 0x00000001a1af1664 0x1a176a000 + 3700324
38 UIKitCore 0x00000001a1aee984 0x1a176a000 + 3688836
39 UIKitCore 0x00000001a2375d7c 0x1a176a000 + 12631420
40 UIKitCore 0x00000001a2375444 0x1a176a000 + 12629060
41 UIKitCore 0x00000001a2376348 0x1a176a000 + 12632904
42 UIKitCore 0x00000001a2387888 0x1a176a000 + 12703880
43 TestApp 0x0000000100a66618 AppDelegate.application(_:didFinishLaunchingWithOptions:) + 75288 (<compiler-generated>:0)
44 TestApp 0x0000000100a6688c @objc AppDelegate.application(_:didFinishLaunchingWithOptions:) + 75916 (<compiler-generated>:0)
45 UIKitCore 0x00000001a2330a08 0x1a176a000 + 12347912
46 UIKitCore 0x00000001a233249c 0x1a176a000 + 12354716
47 UIKitCore 0x00000001a23385e8 0x1a176a000 + 12379624
48 UIKitCore 0x00000001a198c598 0x1a176a000 + 2237848
49 UIKitCore 0x00000001a1ef5634 0x1a176a000 + 7910964
50 UIKitCore 0x00000001a198d130 0x1a176a000 + 2240816
51 UIKitCore 0x00000001a198cb38 0x1a176a000 + 2239288
52 UIKitCore 0x00000001a198cf40 0x1a176a000 + 2240320
53 UIKitCore 0x00000001a198c77c 0x1a176a000 + 2238332
54 UIKitCore 0x00000001a1994cc0 0x1a176a000 + 2272448
55 UIKitCore 0x00000001a1e0304c 0x1a176a000 + 6918220
56 UIKitCore 0x00000001a1f0e444 0x1a176a000 + 8012868
57 UIKitCore 0x00000001a19949b8 0x1a176a000 + 2271672
58 UIKitCore 0x00000001a17bc8a0 0x1a176a000 + 338080
59 UIKitCore 0x00000001a17bb220 0x1a176a000 + 332320
60 UIKitCore 0x00000001a17bc4c8 0x1a176a000 + 337096
61 UIKitCore 0x00000001a2336788 0x1a176a000 + 12371848
62 UIKitCore 0x00000001a1e2c6ac 0x1a176a000 + 7087788
63 FrontBoardServices 0x00000001aeeaf5d8 0x1aeea5000 + 42456
64 FrontBoardServices 0x00000001aeedad44 0x1aeea5000 + 220484
65 FrontBoardServices 0x00000001aeebe6a4 0x1aeea5000 + 104100
66 FrontBoardServices 0x00000001aeedaa0c 0x1aeea5000 + 219660
67 libdispatch.dylib 0x000000019f5407ec 0x19f53c000 + 18412
68 libdispatch.dylib 0x000000019f5442dc 0x19f53c000 + 33500
69 FrontBoardServices 0x00000001aef02fa0 0x1aeea5000 + 384928
70 FrontBoardServices 0x00000001aef02c30 0x1aeea5000 + 384048
71 FrontBoardServices 0x00000001aef03184 0x1aeea5000 + 385412
72 CoreFoundation 0x000000019f8cd848 0x19f82a000 + 669768
73 CoreFoundation 0x000000019f8cd744 0x19f82a000 + 669508
74 CoreFoundation 0x000000019f8cca48 0x19f82a000 + 666184
75 CoreFoundation 0x000000019f8c6a28 0x19f82a000 + 641576
76 CoreFoundation 0x000000019f8c61c0 0x19f82a000 + 639424
77 GraphicsServices 0x00000001b6eae734 0x1b6eab000 + 14132
78 UIKitCore 0x00000001a23347e4 0x1a176a000 + 12363748
79 UIKitCore 0x00000001a233a054 0x1a176a000 + 12386388
80 TestApp 0x0000000100a5dcc4 main + 40132 (AppDelegate.swift:9)
81 libdyld.dylib 0x000000019f582cf8 0x19f581000 + 7416
Thread 1 name: Dispatch queue: com.apple.root.background-qos
Thread 1:
0 libdispatch.dylib 0x000000019f5521b0 0x19f53c000 + 90544
1 libdispatch.dylib 0x000000019f551ec4 0x19f53c000 + 89796
2 libdispatch.dylib 0x000000019f5527a8 0x19f53c000 + 92072
3 libsystem_pthread.dylib 0x00000001ea752768 0x1ea74f000 + 14184
4 libsystem_pthread.dylib 0x00000001ea75974c 0x1ea74f000 + 42828
Thread 2:
0 libsystem_pthread.dylib 0x00000001ea759744 0x1ea74f000 + 42820
Thread 3:
0 libsystem_pthread.dylib 0x00000001ea759744 0x1ea74f000 + 42820
Thread 4:
0 libsystem_pthread.dylib 0x00000001ea759744 0x1ea74f000 + 42820
Thread 5 name: com.apple.uikit.eventfetch-thread
Thread 5:
0 libsystem_kernel.dylib 0x00000001cd28c4fc 0x1cd288000 + 17660
1 libsystem_kernel.dylib 0x00000001cd28b884 0x1cd288000 + 14468
2 CoreFoundation 0x000000019f8ccd10 0x19f82a000 + 666896
3 CoreFoundation 0x000000019f8c6bb0 0x19f82a000 + 641968
4 CoreFoundation 0x000000019f8c61c0 0x19f82a000 + 639424
5 Foundation 0x00000001a0ba6fac 0x1a0b9f000 + 32684
6 Foundation 0x00000001a0ba6e78 0x1a0b9f000 + 32376
7 UIKitCore 0x00000001a23e938c 0x1a176a000 + 13104012
8 Foundation 0x00000001a0d182fc 0x1a0b9f000 + 1544956
9 libsystem_pthread.dylib 0x00000001ea750c00 0x1ea74f000 + 7168
10 libsystem_pthread.dylib 0x00000001ea759758 0x1ea74f000 + 42840
Thread 6 name: Dispatch queue: com.apple.root.default-qos
Thread 6 Crashed:
0 libswiftCore.dylib 0x00000001a34d8acc 0x1a34a1000 + 228044
1 libswiftCore.dylib 0x00000001a34d8acc 0x1a34a1000 + 228044
2 TestApp 0x0000000100ae6fdc closure #2 in ViewController.viewDidLoad() + 602076 (<compiler-generated>:0)
3 TestApp 0x0000000100ae701c thunk for @escaping @callee_guaranteed (@unowned Bool) -> () + 602140 (<compiler-generated>:0)
4 TCC 0x00000001e2a02924 0x1e29ff000 + 14628
5 TCC 0x00000001e2a06ff0 0x1e29ff000 + 32752
6 libxpc.dylib 0x00000001ea785168 0x1ea76a000 + 110952
7 libxpc.dylib 0x00000001ea778a70 0x1ea76a000 + 60016
8 libdispatch.dylib 0x000000019f540874 0x19f53c000 + 18548
9 libdispatch.dylib 0x000000019f55cf54 0x19f53c000 + 134996
10 libdispatch.dylib 0x000000019f552d1c 0x19f53c000 + 93468
11 libsystem_pthread.dylib 0x00000001ea7527dc 0x1ea74f000 + 14300
12 libsystem_pthread.dylib 0x00000001ea75974c 0x1ea74f000 + 42828
Thread 7:
0 libsystem_pthread.dylib 0x00000001ea759744 0x1ea74f000 + 42820
Thread 6 crashed with ARM Thread State (64-bit):
x0: 0x8000000100b80ab0 x1: 0x0000000282c3ee80 x2: 0x0000000000000007 x3: 0x00000001aef3d238
x4: 0x00000000000062dc x5: 0x000000016f6ee5b0 x6: 0x0000000000000073 x7: 0x0000000000000850
x8: 0x000000000000007f x9: 0x00000000000007fb x10: 0x00000000000007fd x11: 0x000000000000005e
x12: 0x0000000000000001 x13: 0x00000000ae00203b x14: 0x00000000ae202800 x15: 0x0000000000002800
x16: 0x000000002e200000 x17: 0x00000001aef449b0 x18: 0x0000000000000000 x19: 0x8000000100b80ab0
x20: 0x000000016f6ee640 x21: 0x0000000100b7a0f4 x22: 0x0000000000000028 x23: 0x0000000000000000
x24: 0x00000000000005ee x25: 0x000000000000000b x26: 0x0000000000000002 x27: 0x0000000100b80060
x28: 0x000000016f6ee680 fp: 0x000000016f6ee730 lr: 0x00000001a34d8acc
sp: 0x000000016f6ee680 pc: 0x00000001a34d8acc cpsr: 0x60000000
esr: 0xf2000001 Address size fault
This result does not exactly match the crash log received from Apple, but it is not fully symbolized.
As far as I read the above log, I can only understand that there may be a problem around the 9th line of AppDelegate.swift. The 9th line of the actual AppDelegate.swift is just the place where the class definition is as follows.
import UIKit
import CoreData
import SwiftyStoreKit
import Foundation
@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {
What is the cause of the inability to symbolize correctly? Here's one of the causes I can think of:
This XCode project uses a third-party library, so "Enable Bitcode" is set to No.
Perhaps because of that, when I press "Download Debug Symbols", "No dSYMs were found for Version ..." is displayed.
I suspect this is one of the reasons why crash logs cannot be symbolized correctly.
Please let me know if there is a way to properly symbolize the crash log or to know the cause of the crash correctly.