iOS app crashing in release mode, works in debug mode

问题

Recently my app started breaking if I create the .ipa file for AppStore release. It works fine if I run the same code in emulator or if I run it on my iPhone from xcode, but once I create the release package it crashes while opening a particular view controller.

I went through few of the posts on Stackoverflow where people had similar problems and tried following things:

Setting SWIFT_OPTIMIZATION_LEVEL = "-Onone"; for release mode
Setting GCC_OPTIMIZATION_LEVEL = 0; for release mode
Commenting out some of the UI components which were added recently

Following is the log I got from the device:

Incident Identifier: 4F30BFF1-71DC-4542-A330-F3786B3302A8
CrashReporter Key:   f6fcec71c8263640bd75a0d18937c323d8a95b43
Hardware Model:      iPhone8,1
Process:             Dummy [633]
Path:                /private/var/containers/Bundle/Application/370692A3-C880-4008-8C70-641801FB894A/Dummy.app/Dummy
Identifier:          com.example.Dummy
Version:             1.0.71 (1.0.71)
Code Type:           ARM-64 (Native)
Role:                Foreground
Parent Process:      launchd [1]
Coalition:           com.example.Dummy [741]


Date/Time:           2017-10-09 18:08:28.2604 -0700
Launch Time:         2017-10-09 18:07:45.3034 -0700
OS Version:          iPhone OS 10.3.2 (14F89)
Report Version:      104

Exception Type:  EXC_BREAKPOINT (SIGTRAP)
Exception Codes: 0x0000000000000001, 0x0000000100518448
Termination Signal: Trace/BPT trap: 5
Termination Reason: Namespace SIGNAL, Code 0x5
Terminating Process: exc handler [0]
Triggered by Thread:  0

Filtered syslog:
None found

Thread 0 name:  Dispatch queue: com.apple.main-thread
Thread 0 Crashed:
0   libswiftCore.dylib              0x0000000100518448 0x1003c0000 + 1410120
1   libswiftCore.dylib              0x0000000100518448 0x1003c0000 + 1410120
2   Dummy                           0x00000001000e2e14 0x10003c000 + 683540
3   Dummy                           0x00000001000e351c 0x10003c000 + 685340
4   UIKit                           0x000000018b5d3ec0 -[UIViewController loadViewIfRequired] + 1036
5   UIKit                           0x000000018b68bff0 -[UINavigationController _layoutViewController:] + 72
6   UIKit                           0x000000018b68bec8 -[UINavigationController _updateScrollViewFromViewController:toViewController:] + 416
7   UIKit                           0x000000018b68b1f8 -[UINavigationController _startTransition:fromViewController:toViewController:] + 144
8   UIKit                           0x000000018b68ac2c -[UINavigationController _startDeferredTransitionIfNeeded:] + 856
9   UIKit                           0x000000018b68a7e0 -[UINavigationController __viewWillLayoutSubviews] + 64
10  UIKit                           0x000000018b68a744 -[UILayoutContainerView layoutSubviews] + 188
11  UIKit                           0x000000018b5d107c -[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 1200
12  QuartzCore                      0x00000001887c1274 -[CALayer layoutSublayers] + 148
13  QuartzCore                      0x00000001887b5de8 CA::Layer::layout_if_needed(CA::Transaction*) + 292
14  QuartzCore                      0x00000001887b5ca8 CA::Layer::layout_and_display_if_needed(CA::Transaction*) + 32
15  QuartzCore                      0x000000018873134c CA::Context::commit_transaction(CA::Transaction*) + 252
16  QuartzCore                      0x00000001887583ac CA::Transaction::commit() + 504
17  QuartzCore                      0x0000000188758e78 CA::Transaction::observer_callback(__CFRunLoopObserver*, unsigned long, void*) + 120
18  CoreFoundation                  0x00000001854509a8 __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 32
19  CoreFoundation                  0x000000018544e630 __CFRunLoopDoObservers + 372
20  CoreFoundation                  0x000000018544ea7c __CFRunLoopRun + 956
21  CoreFoundation                  0x000000018537eda4 CFRunLoopRunSpecific + 424
22  GraphicsServices                0x0000000186de8074 GSEventRunModal + 100
23  UIKit                           0x000000018b639058 UIApplicationMain + 208
24  Dummy                           0x0000000100105f34 0x10003c000 + 827188
25  libdyld.dylib                   0x000000018438d59c start + 4

Thread 1:
0   libsystem_pthread.dylib         0x0000000184562ca8 start_wqthread + 0

Thread 2 name:  com.apple.uikit.eventfetch-thread
Thread 2:
0   libsystem_kernel.dylib          0x000000018447f224 mach_msg_trap + 8
1   libsystem_kernel.dylib          0x000000018447f09c mach_msg + 72
2   CoreFoundation                  0x0000000185450e90 __CFRunLoopServiceMachPort + 192
3   CoreFoundation                  0x000000018544eae4 __CFRunLoopRun + 1060
4   CoreFoundation                  0x000000018537eda4 CFRunLoopRunSpecific + 424
5   Foundation                      0x0000000185e98d74 -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 304
6   Foundation                      0x0000000185eb9b44 -[NSRunLoop(NSRunLoop) runUntilDate:] + 96
7   UIKit                           0x000000018bfc36a8 -[UIEventFetcher threadMain] + 136
8   Foundation                      0x0000000185f962d8 __NSThread__start__ + 996
9   libsystem_pthread.dylib         0x000000018456568c _pthread_body + 240
10  libsystem_pthread.dylib         0x000000018456559c _pthread_body + 0
11  libsystem_pthread.dylib         0x0000000184562cb4 thread_start + 4

Thread 3:
0   libsystem_kernel.dylib          0x000000018447f224 mach_msg_trap + 8
1   libsystem_kernel.dylib          0x000000018447f09c mach_msg + 72
2   Dummy                           0x000000010012fcf4 0x10003c000 + 998644
3   libsystem_pthread.dylib         0x000000018456568c _pthread_body + 240
4   libsystem_pthread.dylib         0x000000018456559c _pthread_body + 0
5   libsystem_pthread.dylib         0x0000000184562cb4 thread_start + 4

Thread 4 name:  com.apple.NSURLConnectionLoader
Thread 4:
0   libsystem_kernel.dylib          0x000000018447f224 mach_msg_trap + 8
1   libsystem_kernel.dylib          0x000000018447f09c mach_msg + 72
2   CoreFoundation                  0x0000000185450e90 __CFRunLoopServiceMachPort + 192
3   CoreFoundation                  0x000000018544eae4 __CFRunLoopRun + 1060
4   CoreFoundation                  0x000000018537eda4 CFRunLoopRunSpecific + 424
5   CFNetwork                       0x0000000185b8adf4 +[NSURLConnection(Loader) _resourceLoadLoop:] + 404
6   Foundation                      0x0000000185f962d8 __NSThread__start__ + 996
7   libsystem_pthread.dylib         0x000000018456568c _pthread_body + 240
8   libsystem_pthread.dylib         0x000000018456559c _pthread_body + 0
9   libsystem_pthread.dylib         0x0000000184562cb4 thread_start + 4

Thread 5 name:  AVAudioSession Notify Thread
Thread 5:
0   libsystem_kernel.dylib          0x000000018447f224 mach_msg_trap + 8
1   libsystem_kernel.dylib          0x000000018447f09c mach_msg + 72
2   CoreFoundation                  0x0000000185450e90 __CFRunLoopServiceMachPort + 192
3   CoreFoundation                  0x000000018544eae4 __CFRunLoopRun + 1060
4   CoreFoundation                  0x000000018537eda4 CFRunLoopRunSpecific + 424
5   AVFAudio                        0x000000019f6c2540 GenericRunLoopThread::Entry(void*) + 164
6   AVFAudio                        0x000000019f6e8814 CAPThread::Entry(CAPThread*) + 84
7   libsystem_pthread.dylib         0x000000018456568c _pthread_body + 240
8   libsystem_pthread.dylib         0x000000018456559c _pthread_body + 0
9   libsystem_pthread.dylib         0x0000000184562cb4 thread_start + 4

Thread 6:
0   libsystem_kernel.dylib          0x000000018449da88 __workq_kernreturn + 8
1   libsystem_pthread.dylib         0x00000001845631a4 _pthread_wqthread + 1260
2   libsystem_pthread.dylib         0x0000000184562cac start_wqthread + 4

Thread 7:
0   libsystem_pthread.dylib         0x0000000184562ca8 start_wqthread + 0

Thread 8:
0   libsystem_kernel.dylib          0x000000018449da88 __workq_kernreturn + 8
1   libsystem_pthread.dylib         0x00000001845631a4 _pthread_wqthread + 1260
2   libsystem_pthread.dylib         0x0000000184562cac start_wqthread + 4

Thread 9:
0   libsystem_pthread.dylib         0x0000000184562ca8 start_wqthread + 0

Thread 0 crashed with ARM Thread State (64-bit):
    x0: 0x0000000100d20b80   x1: 0x00000001742ea580   x2: 0x0000000000000008   x3: 0x00000001844e32c0
    x4: 0x00000000ffb80038   x5: 0x0000000000000010   x6: 0x0048000004210103   x7: 0x0000000000000000
    x8: 0x00000001742e9980   x9: 0x00000001742e9980  x10: 0x0000000000000001  x11: 0xbaddc0dedeadbead
   x12: 0x0000010000000100  x13: 0x206e6120676e6970  x14: 0x6c616e6f6974704f  x15: 0x000a65756c617620
   x16: 0x00000001844d3a1c  x17: 0x0000000000000000  x18: 0x0000000000000000  x19: 0x0000000000000000
   x20: 0x0000000000000002  x21: 0x0000000000000039  x22: 0x000000010022ac40  x23: 0x0000000000000002
   x24: 0x000000000000000b  x25: 0x0000000100231dc8  x26: 0x0000000171a68480  x27: 0x00000001aa543000
   x28: 0x0000000000000001   fp: 0x000000016fdc0ee0   lr: 0x0000000100518448
    sp: 0x000000016fdc0ea0   pc: 0x0000000100518448 cpsr: 0x20000000

I am using Xcode Version 8.3.3 (8E3004b), Swift3. Please let me know if someone had similar issue before, or any guesses to fix this problem!

Thanks!

回答1:

Try to symbolicate crash exactly where it is crashing from frames 2 and 3.

You can symbolicate crash like below:

Based on this link

In your case you have to call as below :

atos -arch arm64 -o <PATH TO Dummy.app.dSYM>/Contents/Resources/DWARF/Dummy -l 0x10003c000 0x00000001000e2e14

Dummy.app.dSYM is located in

right click on Dummy.xcarchive and then Show Package Contents.
In that dSYMs folder is there
Dummy.app.dSYM is located in the dSYMs folder
Copy Dummy.app.dSYM to somewhere to your local system.
<PATH TO Dummy.app.dSYM> will be the path of the Dummy.app.dSYM in your local system

来源：https://stackoverflow.com/questions/46673950/ios-app-crashing-in-release-mode-works-in-debug-mode

标签

ios

swift3

xcode8