Bug 31352 - Found managed Object in Native Object
Summary: Found managed Object in Native Object
Status: RESOLVED ANSWERED
Alias: None
Product: iOS
Classification: Xamarin
Component: Xamarin.iOS.dll ()
Version: master
Hardware: Macintosh Mac OS
: --- normal
Target Milestone: Untriaged
Assignee: Bugzilla
URL:
Depends on:
Blocks:
 
Reported: 2015-06-24 10:05 UTC by Michael Murray
Modified: 2015-06-25 13:13 UTC (History)
2 users (show)

Tags:
Is this bug a regression?: ---
Last known good build:

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Status:
RESOLVED ANSWERED

Description Michael Murray 2015-06-24 10:05:50 UTC
When trying to navigate to a view from a tab bar, i'm getting this crash on all devices.  I have changed nothing from this release to the previous release other than an update to xamarin.iOS and xamarin studio.  I am dead in the water until i can resolve this and i have no idea what is causing it.

Below is the relevant crash log.

2015-06-23 17:17:28.023 T2GiOS[4804:60b] Xamarin.iOS: Internal consistency error, please file a bug (http://bugzilla.xamarin.com). Additional data: found managed object 0x42183f0=0x17633e50 (T2G.iOS.MenuViewController) in native object 0x176f5f10 (MenuViewController).
2015-06-23 17:17:28.025 T2GiOS[4804:60b] critical: Stacktrace:

2015-06-23 17:17:28.026 T2GiOS[4804:60b] critical:   at <unknown> <0xffffffff>
2015-06-23 17:17:28.027 T2GiOS[4804:60b] critical:   at (wrapper managed-to-native) UIKit.UIApplication.UIApplicationMain (int,string[],intptr,intptr) <0xffffffff>
2015-06-23 17:17:28.030 T2GiOS[4804:60b] critical:   at UIKit.UIApplication.Main (string[],intptr,intptr) [0x00005] in /Users/builder/data/lanes/1503/e6ebd18b/source/maccore/src/UIKit/UIApplication.cs:63
2015-06-23 17:17:28.033 T2GiOS[4804:60b] critical:   at UIKit.UIApplication.Main (string[],string,string) [0x0001c] in /Users/builder/data/lanes/1503/e6ebd18b/source/maccore/src/UIKit/UIApplication.cs:46
2015-06-23 17:17:28.035 T2GiOS[4804:60b] critical:   at T2G.iOS.Application.Main (string[]) [0x00009] in /Users/administrator/Projects/Tales2Go/Tales2Go/T2G.iOS/Main.cs:18
2015-06-23 17:17:28.036 T2GiOS[4804:60b] critical:   at (wrapper runtime-invoke) object.runtime_invoke_dynamic (intptr,intptr,intptr,intptr) <0xffffffff>
2015-06-23 17:17:28.037 T2GiOS[4804:60b] critical: 
Native stacktrace:

2015-06-23 17:17:28.516 T2GiOS[4804:60b] critical: 	0   T2GiOS                              0x00a829ef mono_handle_native_sigsegv + 238
2015-06-23 17:17:28.519 T2GiOS[4804:60b] critical: 	1   T2GiOS                              0x00a868bd sigabrt_signal_handler + 104
2015-06-23 17:17:28.520 T2GiOS[4804:60b] critical: 	2   libsystem_platform.dylib            0x38ceaf93 _sigtramp + 42
2015-06-23 17:17:28.521 T2GiOS[4804:60b] critical: 	3   libsystem_pthread.dylib             0x38cf0797 pthread_kill + 58
2015-06-23 17:17:28.522 T2GiOS[4804:60b] critical: 	4   libsystem_c.dylib                   0x38c36fdd abort + 76
2015-06-23 17:17:28.523 T2GiOS[4804:60b] critical: 	5   T2GiOS                              0x00b241ec xamarin_class_get_full_name + 0
2015-06-23 17:17:28.524 T2GiOS[4804:60b] critical: 	6   T2GiOS                              0x00b24150 xamarin_get_managed_object_for_ptr_fast + 224
2015-06-23 17:17:28.525 T2GiOS[4804:60b] critical: 	7   T2GiOS                              0x00a4add3 native_to_managed_trampoline_4 + 62
2015-06-23 17:17:28.526 T2GiOS[4804:60b] critical: 	8   T2GiOS                              0x00a52c15 -[MenuViewController loadView] + 52
Comment 1 Rolf Bjarne Kvinge [MSFT] 2015-06-24 10:32:10 UTC
Can you attach a project we can use to reproduce this error and track it down?
Comment 2 Rolf Bjarne Kvinge [MSFT] 2015-06-24 10:33:15 UTC
BTW you can downgrade to the previous version of Xamarin.iOS if you're blocked by this: https://kb.xamarin.com/customer/portal/articles/1699777-how-do-i-downgrade-to-an-older-version-
Comment 5 Rolf Bjarne Kvinge [MSFT] 2015-06-25 09:56:28 UTC
@Michael, I can't reproduce this issue with the current Stable release (which was released yesterday), but I can with the previous Stable release, so I believe we've fixed this already.

Can you try and see confirm if that's the case?
Comment 6 Michael Murray 2015-06-25 13:13:31 UTC
Yes thank you.  Upgrading to the new release resolved the problem.

Thanks again for the help!