App crashes as release build on iPad/iPhone 6-iOS 9.2 - but debugging is fine

Question

I have Swift 3 project (using tab bar project template) , and running it in debug mode is fine with iOS 9.2.However, I tried to archive and ad-hoc distribute my app (and tried in-house distribution also), the app crashes at launch, sometimes crash when tapping on tab bar, happend on iPhone6 plus, iPad with iOS 9.2 only (iOS 10.x, 9.0, 9.3 work fine).Can anyone help me?I have set the swift optimization to none (or Fast, Single-File Optimization [-O]) for release mode, still no luck.My project information as below:- Using Swift 3, Xcode 8.2.1 (also tried with 8.2, 8.1 also)- Using Cocoapods with Alamofire 4.0, CryptoSwift, ObjectMapper...-Using an own *.framework, added to Embeded BinariesBelow is sample log I got from device:============================ Part of the log ======================Incident Identifier: 3BA99166-BB2B-4E83-89E1-8AD6982559EDCrashReporter Key:   18f1e8dc235fc49697977300f246dd70cdbaefe5Hardware Model:      iPad4,2Process:             MyApp [4841]Path:                /private/var/mobile/Containers/Bundle/Application/68835641-AA2A-4C20-9547-432C9995BA6C/MyApp.app/MyAppIdentifier:          com.asahi.asahishimbun.iphone.MyAppVersion:             6.0.0.0 (6.0.0)Code Type:           ARM-64 (Native)Parent Process:      launchd [1]Date/Time:           2017-02-23 09:50:16.16 +0700Launch Time:         2017-02-23 09:46:50.50 +0700OS Version:          iOS 9.2 (13C75)Report Version:      105Exception Type:  EXC_BAD_ACCESS (SIGSEGV)Exception Subtype: KERN_INVALID_ADDRESS at 0x0000000000000180Triggered by Thread:  0Filtered syslog:None foundThread 0 name:  Dispatch queue: com.apple.main-threadThread 0 Crashed:0   libobjc.A.dylib               0x0000000181d8dbdc objc_msgSend + 281   UIKit                         0x00000001879ee654 -[UINibStringIDTable lookupKey:identifier:] + 1322   UIKit                         0x00000001879ea2a4 -[UINibDecoder decodeObjectForKey:] + 483   UIKit                         0x00000001878c9530 -[UINib instantiateWithOwner:options:] + 13804   UIKit                         0x00000001878cb92c -[NSBundle(UINSBundleAdditions) loadNibNamed:owner:options:] + 2245   AsahiDigital                   0x00000001000a52bc 0x100060000 + 2833246   AsahiDigital                   0x00000001003a805c 0x100060000 + 34407327   AsahiDigital                   0x00000001003a8f4c 0x100060000 + 34445568   UIKit                         0x00000001874000c0 -[UIViewController loadViewIfRequired] + 9969   UIKit                         0x00000001874bfda8 -[UINavigationController _layoutViewController:] + 7210  UIKit                         0x00000001874bfc80 -[UINavigationController _updateScrollViewFromViewController:toViewController:] + 41611  UIKit                         0x00000001874beec8 -[UINavigationController _startTransition:fromViewController:toViewController:] + 14412  UIKit                         0x00000001874bea6c -[UINavigationController _startDeferredTransitionIfNeeded:] + 86813  UIKit                         0x00000001874be694 -[UINavigationController __viewWillLayoutSubviews] + 6014  UIKit                         0x00000001874be5fc -[UILayoutContainerView layoutSubviews] + 20815  UIKit                         0x00000001873fb778 -[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 65616  QuartzCore                     0x0000000184e0ab2c -[CALayer layoutSublayers] + 14817  QuartzCore                     0x0000000184e05738 CA::Layer::layout_if_needed(CA::Transaction*) + 29218  QuartzCore                     0x0000000184e055f8 CA::Layer::layout_and_display_if_needed(CA::Transaction*) + 3219  QuartzCore                     0x0000000184e04c94 CA::Context::commit_transaction(CA::Transaction*) + 25220  QuartzCore                     0x0000000184e049dc CA::Transaction::commit() + 51221  QuartzCore                     0x0000000184dfe0cc CA::Transaction::observer_callback(__CFRunLoopObserver*, unsigned long, void*) + 8022  CoreFoundation                 0x00000001826c4588 __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 3223  CoreFoundation                 0x00000001826c232c __CFRunLoopDoObservers + 37224  CoreFoundation                 0x00000001826c275c __CFRunLoopRun + 92825  CoreFoundation                 0x00000001825f1680 CFRunLoopRunSpecific + 38426  GraphicsServices               0x0000000183b00088 GSEventRunModal + 18027  UIKit                         0x0000000187468d90 UIApplicationMain + 20428  AsahiDigital                   0x00000001000fb314 0x100060000 + 63566829  libdyld.dylib                 0x00000001821928b8 start + 4Thread 1 name:  Dispatch queue: com.apple.libdispatch-manager

Nezhyborets · Answer

Any news on this?

Michael-zhang · Answer

This kind of crash only happens on the versions between iOS 9.0.2 and iOS 9.2.x, and only on the apps from App Store. The stack information just points to the function which call the method "loadNibNamed:owner:options". It confuses us.When you install the app to the device on debug mode or release mode through Xcode, it&#x27;s normal and will not encounter this crash any longer.In Xcode 8 or Xcode 9, when your project contains the picture which DisplayGamut is P3 or Encoding is ARGB-16, this kind of crash will happens on the device who download the app from App Store. So it&#x27;s smart to replace the picture. The fastest way is as follows:1.find the Assets.car file in the .ipa2.use assetutil command to product pictures&#x27; json, just like this:sudo xcrun --sdk iphoneos assetutil --info Assets.car &amp;gt; Assets.json3.it&#x27;s easy to find "DisplayGamut": "P3" string in the Assets.json;just replace the picture with a new one.