OBJC Another crash log issue - ios

I've been scanning thru similar questions but I cannot find one that applies to my case or clear enough. My app was rejected by the Apple Review with it crashes al launch, it works on all of my devices the crashlog is as below , the uuid matches on DSYM and the binary section on the crash log, ran atos, dwarf , symbolicate and all of the suggested stuff on the other questions but I get nothing it just echoes back the addresses or prints it back so i cannot find out where/what causes the crash. Any suggestion??? I also found a bunch of perl/csh scripts that do the same or fail so I'm stuck.
Hardware Model: xxx
Process: MyApp [840]
Path: /private/var/containers/Bundle/Application/772689C2-24B8-49E8-A236-
C0D669C5A5AE/MyApp.app/MyApp
Version: 4 (1.40)
Code Type: ARM-64 (Native)
Role: Foreground
Parent Process: launchd [1]
Date/Time: 2018-07-25 08:49:09.6233 -0700
Launch Time: 2018-07-25 08:49:04.7929 -0700
OS Version: iPhone OS 11.4.1 (15G77)
Baseband Version: 6.80.00
Report Version: 104
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Subtype: KERN_INVALID_ADDRESS at 0x0000000dc17cbec8
VM Region Info: 0xdc17cbec8 is not in any region. Bytes after
previous region: 51027689161
REGION TYPE START - END [ VSIZE]
PRT/MAX SHRMOD REGION DETAIL
MALLOC_NANO (reserved) 00000001d8000000-00000001e0000000 [128.0M]
rw-/rwx SM=NUL ...(unallocated)
--->
UNUSED SPACE AT END
Termination Signal: Segmentation fault: 11
Termination Reason: Namespace SIGNAL, Code 0xb
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 libobjc.A.dylib 0x0000000183fcd7f4 0x183fa8000 +
153588
1 CoreFoundation 0x0000000184cc6500 0x184cb1000 + 87296
2 libobjc.A.dylib 0x0000000183fce13c 0x183fa8000 + 155964
3 CoreFoundation 0x0000000184cbcaac 0x184cb1000 + 47788
4 UIKit 0x000000018ede35c8 0x18e9bf000 + 4343240
5 UIKit 0x000000018edfb9dc 0x18e9bf000 + 4442588
6 CoreFoundation 0x0000000184d9e910 0x184cb1000 + 973072
7 CoreFoundation 0x0000000184d9c238 0x184cb1000 + 963128
8 CoreFoundation 0x0000000184d9c884 0x184cb1000 + 964740
9 CoreFoundation 0x0000000184cbcda8 0x184cb1000 + 48552
10 GraphicsServices 0x0000000186ca2020 0x186c97000 + 45088
11 UIKit 0x000000018ecdc758 0x18e9bf000 + 3266392
12 MyApp 0x00000001011bd888 main (main.m:14)
13 libdyld.dylib 0x000000018474dfc0 0x18474d000 + 4032
Thread 1:

Related

KMM and preview for swift ui

Trying out kmm with a non trivial project,
The task is to show a list of repos, and I want to have a preview of the screen in swift-ui.
I have a viewModel that get's injected a repository that will eventually query github api.
For the preview I inject a fake repository that should answer with a list of hardcoded objects.
The code is in this PR https://github.com/alexandru-calinoiu/SharedAppSample/pull/1
Preview for RepoListView will crash:
-------------------------------------
Translated Report (Full Report Below)
-------------------------------------
Incident Identifier: 4990E330-CD93-4D80-92C9-1426BBC3FBBA
CrashReporter Key: E30E0C83-3AF1-4C22-98AC-D674ED184D1C
Hardware Model: Macmini8,1
Process: iosApp [41515]
Path: /Users/USER/Library/Developer/Xcode/UserData/Previews/Simulator Devices/0DF05C52-98D2-4DF5-AA63-6F22DBFE76C1/data/Containers/Bundle/Application/461BB8B1-6BFE-4BB1-B1FD-0882D664AE26/iosApp.app/iosApp
Identifier: orgIdentifier.iosApp
Version: 1.0 (1)
Code Type: X86-64 (Native)
Role: Foreground
Parent Process: launchd_sim [16338]
Coalition: com.apple.CoreSimulator.SimDevice.0DF05C52-98D2-4DF5-AA63-6F22DBFE76C1 [86637]
Responsible Process: SimulatorTrampoline [670]
Date/Time: 2022-10-10 17:12:15.1370 +0300
Launch Time: 2022-10-10 17:12:14.5247 +0300
OS Version: macOS 12.5.1 (21G83)
Release Type: User
Report Version: 104
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Subtype: KERN_INVALID_ADDRESS at 0x0000000000000118
Exception Codes: 0x0000000000000001, 0x0000000000000118
VM Region Info: 0x118 is not in any region. Bytes before following region: 140737487011560
REGION TYPE START - END [ VSIZE] PRT/MAX SHRMOD REGION DETAIL
UNUSED SPACE AT START
--->
VM_ALLOCATE 7fffffeb8000-7fffffeb9000 [ 4K] r-x/r-x SM=ALI
Exception Note: EXC_CORPSE_NOTIFY
Termination Reason: SIGNAL 11 Segmentation fault: 11
Terminating Process: exc handler [41515]
Triggered by Thread: 0
Thread 0 Crashed:: Dispatch queue: BSXPCCnx:com.apple.dt.xcode-previews.systemservices (BSCnx:client:com.apple.dt.uv.agent-preview-nonui-service)
0 RepoListView.1.preview-thunk.dylib 0x13d1f7d7b Kotlin_Interop_CreateKStringFromNSString + 107
1 iosApp 0x10eb2c3cd Kotlin_ObjCExport_refFromObjC + 61
2 iosApp 0x10ea5124f objc2kotlin.1693 + 335
3 iosApp 0x10e67ec70 #nonobjc ExploreSharedRepo.init(owner:name:description:primaryLanguage:lastActivity:) + 160
4 iosApp 0x10e67e325 ExploreSharedRepo.__allocating_init(owner:name:description:primaryLanguage:lastActivity:) + 133
5 iosApp 0x10e67e1ba one-time initialization function for repos + 218 (RepoListView.swift:61)
6 libdispatch.dylib 0x110f95a3a _dispatch_client_callout + 8
7 libdispatch.dylib 0x110f96db3 _dispatch_once_callout + 20
8 iosApp 0x10e67e361 Screen_Previews.repos.unsafeMutableAddressor + 49 (RepoListView.swift:60)
9 iosApp 0x10e67e3bb one-time initialization function for viewModel + 27 (RepoListView.swift:65)
10 libdispatch.dylib 0x110f95a3a _dispatch_client_callout + 8
11 libdispatch.dylib 0x110f96db3 _dispatch_once_callout + 20
12 iosApp 0x10e67e421 Screen_Previews.viewModel.unsafeMutableAddressor + 49 (RepoListView.swift:65)
13 RepoListView.1.preview-thunk.dylib 0x13d55de5f static Screen_Previews.__preview__previews.getter + 31 (RepoListView.swift:68)
14 iosApp 0x10e67e6a9 protocol witness for static PreviewProvider.previews.getter in conformance Screen_Previews + 9
15 SwiftUI 0x1152b92a3 0x1148eb000 + 10281635
16 iosApp 0x10e67e6e5 protocol witness for static _PreviewProvider._previews.getter in conformance Screen_Previews + 37
17 SwiftUI 0x1152b9ac1 0x1148eb000 + 10283713
18 PreviewsInjection 0x10fba27f9 0x10fb78000 + 174073
19 PreviewsInjection 0x10fba26e9 0x10fb78000 + 173801
20 PreviewsInjection 0x10fb9991a 0x10fb78000 + 137498
..... (char limit was hit, so no full message)
By reading the log I guess it has something to do with converting strings from to kotlin, but what?
Try adding isStatic = false to your framework block here
The SwiftUI preview doesn't work with static frameworks produced by Kotlin. There's some discussion about it here

How to read this iOS stacktrace?

I usually develop in higher level languages like Javascript and Python , so I am not that experienced when it comes to reading lower level stack traces. I am building an iOS app with React Native and my app sometimes unexpectedly crashes. Reading the crash log this is what I get:
Incident Identifier: B03D5F95-EFD1-4FEB-AE18-C8EFEF273E53
CrashReporter Key: 6049c1cc93a2e0163265631aa6cc2fd30a1af6e7
Hardware Model: iPhone7,2
Process: MyApp [24268]
Path: /private/var/containers/Bundle/Application/99B2B9A1-D266-4222-A083-84C4CFFCE182/MyApp.app/MyApp
Identifier: org.mycompany.MyApp
Version: 1 (1.0)
Code Type: ARM-64 (Native)
Role: Non UI
Parent Process: launchd [1]
Coalition: org.mycompany.MyApp [3119]
Date/Time: 2019-03-04 14:20:18.4924 +0800
Launch Time: 2019-03-04 14:09:15.2536 +0800
OS Version: iPhone OS 11.0.3 (15A432)
Baseband Version: 6.17.00
Report Version: 104
Exception Type: EXC_CRASH (SIGKILL)
Exception Codes: 0x0000000000000000, 0x0000000000000000
Exception Note: EXC_CORPSE_NOTIFY
Termination Reason: Namespace <0xF>, Code 0x8badf00d
Triggered by Thread: 0
Filtered syslog:
None found
Thread 0 name: Dispatch queue: com.apple.main-thread
Thread 0 Crashed:
0 libsystem_kernel.dylib 0x0000000180a60bc4 mach_msg_trap + 8
1 libsystem_kernel.dylib 0x0000000180a60a3c mach_msg + 72
2 BackBoardServices 0x00000001835d0de0 _BKSHIDGetCurrentDisplayBrightness + 112
3 BackBoardServices 0x00000001835de9cc BKSDisplayBrightnessGetCurrent + 32
4 FrontBoardServices 0x00000001835fffc0 -[FBSUIApplicationSystemService currentBacklightLevel] + 12
5 UIKit 0x000000018a8a3d44 -[UIDevice _backlightLevel] + 44
6 UIKit 0x000000018a8aced4 -[UIScreen _postBrightnessDidChangeNotificationIfAppropriate] + 168
7 CoreFoundation 0x0000000180efa12c __CFNOTIFICATIONCENTER_IS_CALLING_OUT_TO_AN_OBSERVER__ + 20
8 CoreFoundation 0x0000000180efa090 ___CFXRegistrationPost_block_invoke + 64
9 CoreFoundation 0x0000000180f1016c __CFRUNLOOP_IS_CALLING_OUT_TO_A_BLOCK__ + 20
10 CoreFoundation 0x0000000180f0fa3c __CFRunLoopDoBlocks + 288
11 CoreFoundation 0x0000000180f0dca4 __CFRunLoopRun + 2436
12 CoreFoundation 0x0000000180e2e2d8 CFRunLoopRunSpecific + 436
13 GraphicsServices 0x0000000182cbff84 GSEventRunModal + 100
14 UIKit 0x000000018a3db880 UIApplicationMain + 208
15 MyApp 0x00000001005833d4 main + 29652 (main.m:14)
16 libdyld.dylib 0x000000018095256c start + 4
How/where do I begin reading thsi crash log? I believe it has something to do with mach_msg_trap but I haven't been able to find anything about it. For some context, my app is an app which tracks the users Geolocation with background geolocation tracking. I am unable to figure out what causes the crash.
See TN2141: Understanding and Analyzing Application Crash Reports, which says:
The exception code 0x8badf00d indicates that an application has been terminated by iOS because a watchdog timeout occurred. The application took too long to launch, terminate, or respond to system events. ... Whatever operation is on Thread 0 needs to be moved to a background thread, or processed differently, so that it does not block the main thread.
Are you doing anything that could be blocking the main thread for any prolonged period of time?
Have you add Privacy - Location in info.plist?
Something like that.
<key>NSLocationAlwaysUsageDescription</key>
<string>Why you need track location?</string>
<key>NSLocationAlwaysAndWhenInUseUsageDescription</key>
<string>Why you need track location?</string>
<key>NSLocationWhenInUseUsageDescription</key>
<string>Why you need track location?</string>
And I see you work with background geolocation tracking. Have you turn on Background Modes in Capabilities?
If not just add Privacy turn on Background Modes and try again.

Setting CALayer transform property causes a crash

I am building an interactive rotating disc control. When the user drags the view, I apply the rotation transform for the view. Like this:
circleView.layer.transform = CATransform3DMakeRotation(angle, 0, 0, 1)
For some reason, this line of code causes the app to crash. The crash is not happening on the first hit of this line, but after a
few seconds of consecutive rotation. If I comment this line out, the crash is not occurring.
To make things worse, when the app crashes xcode doesn't show any error or stacktrace but says "connection to device is lost".
This happening only on a device. On the simulator all goes fine.
In the crash logs of the device, at the time of the crash I see no crashes of my apps but there is a crash of processes DTServiceHub
Incident Identifier: 02336F7A-CAB3-4B13-9509-65EA61813529
CrashReporter Key: e16756d8ab2514bab0584705f4151434dbed594f
Hardware Model: iPad3,4
Process: DTServiceHub [768]
Path: /Developer/Library/PrivateFrameworks/DVTInstrumentsFoundation.framework/DTServiceHub
Identifier: DTServiceHub
Version: ???
Code Type: ARM (Native)
Role: Unspecified
Parent Process: launchd [1]
Coalition: <none> [352]
Date/Time: 2018-10-02 18:26:03.0352 +0300
Launch Time: 2018-10-02 18:25:45.0000 +0300
OS Version: iPhone OS 10.3.3 (14G60)
Report Version: 104
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Subtype: KERN_INVALID_ADDRESS at 0x0bd5f30c
Termination Signal: Segmentation fault: 11
Termination Reason: Namespace SIGNAL, Code 0xb
Terminating Process: exc handler [0]
hread 6 name: Dispatch queue: NStatManager queue
Thread 6 Crashed:
0 libobjc.A.dylib 0x1d404dc6 objc_msgSend + 6
1 CoreFoundation 0x1e086210 -[__NSDictionaryM objectForKey:] + 128
2 IDEDebugGaugeDataProviders 0x00439278 0x430000 + 37496
3 IDEDebugGaugeDataProviders 0x004382a8 0x430000 + 33448
4 NetworkStatistics 0x240ab374 -[NWStatisticsDelegateBlockWrapper sourceDidReceiveCounts:] + 160
5 NetworkStatistics 0x240a548c __59-[NWStatisticsManager dispatchDidReceiveCounts:fromUpdate:]_block_invoke + 110
6 libdispatch.dylib 0x1d83d796 _dispatch_call_block_and_release + 10
7 libdispatch.dylib 0x1d84a59c _dispatch_queue_serial_drain + 854
8 libdispatch.dylib 0x1d840b70 _dispatch_queue_invoke + 886
9 libdispatch.dylib 0x1d84c1b4 _dispatch_root_queue_drain + 326
10 libdispatch.dylib 0x1d84c00e _dispatch_worker_thread3 + 106
11 libsystem_pthread.dylib 0x1d9f287c _pthread_wqthread + 1040
12 libsystem_pthread.dylib 0x1d9f245c start_wqthread + 8
Any ideas?

App is crashed on launch by app store reviewed

I've tested my apps with all sort of iOs version and result is working fine on those devices. But when I published to App Store, they rejected that app is crashed on launch. I cannot convince why app is crashed on their phone even I've tested with same iOs version.
Please let me know, how to solve that issue and I've attached error logs.
{"app_name":"CakeApp","timestamp":"2017-08-10 06:54:09.29 -0700","app_version":"3","slice_uuid":"ba63de93-382a-3879-933d-e584d00cb7aa","adam_id":1233988265,"build_version":"1.2","bundleID":"com.ppshein.CakeApp","share_with_app_devs":false,"is_first_party":false,"bug_type":"109","os_version":"iPhone OS 10.3.3 (14G60)","incident_id":"81B4B45E-ACB0-4305-81BE-B88E4E257238","name":"CakeApp"}
Incident Identifier: 81B4B45E-ACB0-4305-81BE-B88E4E257238
CrashReporter Key: 318083a7319cbe05fd01b4c953a58aebe938f998
Hardware Model: xxx
Process: CakeApp [5822]
Path: /private/var/containers/Bundle/Application/126924F1-2DBF-4F12-8355-1C5787680F75/CakeApp.app/CakeApp
Identifier: com.ppshein.CakeApp
Version: 1.2 (3)
Code Type: ARM-64 (Native)
Role: Foreground
Parent Process: launchd [1]
Coalition: com.ppshein.CakeApp [1034]
Date/Time: 2017-08-10 06:54:09.0262 -0700
Launch Time: 2017-08-10 06:54:06.9573 -0700
OS Version: iPhone OS 10.3.3 (14G60)
Report Version: 104
Exception Type: EXC_BREAKPOINT (SIGTRAP)
Exception Codes: 0x0000000000000001, 0x00000001002749c8
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 CakeApp 0x00000001002749c8 0x100098000 + 1952200
1 CakeApp 0x000000010026dca4 0x100098000 + 1924260
2 UIKit 0x00000001930eae48 0x19306a000 + 527944
3 UIKit 0x00000001932f737c 0x19306a000 + 2675580
4 UIKit 0x00000001932fce24 0x19306a000 + 2698788
5 UIKit 0x00000001933118b0 0x19306a000 + 2783408
6 UIKit 0x00000001932fa0b8 0x19306a000 + 2687160
7 FrontBoardServices 0x000000018eaf8884 0x18eabe000 + 239748
8 FrontBoardServices 0x000000018eaf86f0 0x18eabe000 + 239344
9 FrontBoardServices 0x000000018eaf8aa0 0x18eabe000 + 240288
10 CoreFoundation 0x000000018cefd42c 0x18ce22000 + 898092
11 CoreFoundation 0x000000018cefcd9c 0x18ce22000 + 896412
12 CoreFoundation 0x000000018cefa9a8 0x18ce22000 + 887208
13 CoreFoundation 0x000000018ce2ada4 0x18ce22000 + 36260
14 UIKit 0x00000001930e3fc8 0x19306a000 + 499656
15 UIKit 0x00000001930dec9c 0x19306a000 + 478364
16 CakeApp 0x00000001000a5e3c 0x100098000 + 56892
17 libdyld.dylib 0x000000018be3959c 0x18be35000 + 17820
Did you test your app in a clean environment? Uninstall the app and delete all of its data and then install again.
You can try to resolve the crash by symbolicating the stack trace, as described in this technical note from Apple, which can help you identify the part of your code that crashed.

My app is rejected with Exception EXC_BREAKPOINT (SIGTRAP)

I tested my app on iPhone and iPad devices and it works fine, also I tested it on iOS 10.1.1 and on IPV6 network and it also works fine but after uploading my app to the app store, it is rejected because it crashes when login if the device is offline or on Wifi. They gave me a crash report and after I symplocited it, I get thhis Info :
Date/Time: 2016-11-01 10:07:03.2150 -0700
Launch Time: 2016-11-01 10:05:21.7124 -0700
OS Version: iPhone OS 10.1 (14B72)
Report Version: 104
Exception Type: EXC_BREAKPOINT (SIGTRAP)
Exception Codes: 0x0000000000000001, 0x00000001000f18c0
Termination Signal: Trace/BPT trap: 5
Termination Reason: Namespace SIGNAL, Code 0x5
Terminating Process: exc handler [0]
Triggered by Thread: 0
Thread 0 name: Dispatch queue: com.apple.main-thread
Thread 0 Crashed:
0 MyApp -[FIRMessagingSecureSocket closeStream:] (in MyApp) + 56
1 MyApp -[FIRMessagingRmq2PersistentStore openDatabase:] (in MyApp) + 228
2 MyApp -[FIRMessagingReceiver didSendDataMessageWithID:] (in MyApp) + 128
3 Foundation 0x00000001835e08f8
4 CoreFoundation 0x0000000182aa48f4
5 CoreFoundation 0x0000000182aa4608
6 CoreFoundation 0x0000000182aa3ec4
7 CoreFoundation 0x0000000182aa1ac0
8 CoreFoundation 0x00000001829d0048
9 GraphicsServices 0x0000000184456198
10 UIKit 0x00000001889b42fc
11 UIKit 0x00000001889af034
12 MyApp -[FIRMessagingClient tryToConnect] (in MyApp) + 212
13 libdyld.dylib 0x00000001819b45b8
update :
I published new version put also get this crash log
Exception Type: EXC_BREAKPOINT (SIGTRAP)
Exception Codes: 0x0000000000000001, 0x00000001000a1658
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 MyApp [FIRAMeasurement setUserAttributeOnWorkerQueue:] (in MyApp) + 580
1 MyApp [FIRAMeasurement uploadData] (MyApp) + 180 0x100054000 + 303808
2 MyApp [FIRAMeasurement reportOSUpdateOnWorkerQueue] (in PetCasa Vet) + 124
3 Foundation 0x0000000187acc8f8 0x1879c1000 + 1095928
4 CoreFoundation 0x0000000186f908f4 0x186eb3000 + 907508
5 CoreFoundation 0x0000000186f90608 0x186eb3000 + 906760
6 CoreFoundation 0x0000000186f8fec4 0x186eb3000 + 904900
7 CoreFoundation 0x0000000186f8dac0 0x186eb3000 + 895680
8 CoreFoundation 0x0000000186ebc048 0x186eb3000 + 36936
9 GraphicsServices 0x0000000188942198 0x188936000 + 49560
10 UIKit 0x000000018cea02fc 0x18ce25000 + 504572
11 UIKit 0x000000018ce9b034 0x18ce25000 + 483380
12 MyApp 0x00000001000907d8 (in MyApp) + 448
13 libdyld.dylib 0x0000000185ea05b8 0x185e9c000 + 17848
and this log crash :
Exception Type: EXC_BREAKPOINT (SIGTRAP)
Exception Codes: 0x0000000000000001, 0x00000001000e5658
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 MyApp 0x00000001000e5658 (in MyApp) + 1060
1 MyApp [FIRMessagingConnection loginRequestWithToken:authID:] (in MyApp) + 300
2 MyApp [FIRMessagingConnection initWithAuthID:token:host:port:runLoop:rmq2Manager:gcmManager:] (in MyApp) + 32
3 Foundation 0x0000000187acc8f8 0x1879c1000 + 1095928
4 CoreFoundation 0x0000000186f908f4 0x186eb3000 + 907508
5 CoreFoundation 0x0000000186f90608 0x186eb3000 + 906760
6 CoreFoundation 0x0000000186f8fec4 0x186eb3000 + 904900
7 CoreFoundation 0x0000000186f8dac0 0x186eb3000 + 895680
8 CoreFoundation 0x0000000186ebc048 0x186eb3000 + 36936
9 GraphicsServices 0x0000000188942198 0x188936000 + 49560
10 UIKit 0x000000018cea02fc 0x18ce25000 + 504572
11 UIKit 0x000000018ce9b034 0x18ce25000 + 483380
12 MyApp [FIRInstanceIDRegistrationClient parseToken:authToken:withRequestID:handler:] (in MyApp) + 564
13 libdyld.dylib 0x0000000185ea05b8 0x185e9c000 + 17848
From apple documentation
Trace Trap [EXC_BREAKPOINT // SIGTRAP]
......
......
Swift code will terminate with this exception type if an unexpected
condition is encountered at runtime such as:
1- a non-optional type with a nil
2- value a failed forced type conversion
In my app I use location and I send it to backend, and it works fine, but when opening app at first time, system show alert to say that my app want to use your location allow or not allow, if user didn't allow so location methods will not work and location will be nil and unfortunately I didn't check if location is nil so when unwrap it app crashed, it's my mistake.
Please send message to the Apple review team about same and ask to them
"We tested application on iPhone 6, 6s, 7 and 7+ with iOS 10.x and application works perfect in IPV6 network, We follow following process for IPV6 network: http://www.brianjcoleman.com/tutorial-how-to-test-your-app-for-ipv6-compatibility/" and request to them your event will be held on the coming week so, please release application to store asap and let me know the flow of the application, where you find issue or crashes.
It works, I had done same thing with 4 application and they approved.

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