hread 41 Crashed: 0 libobjc.A.dylib 0x7ff802539d8b objc_msgSend + 11 1 monotouchtest 0x1026788c5 xamarin_gc_toggleref_callback + 53 (runtime.m:747) 2 monotouchtest 0x10268216e xamarin_coreclr_reference_tracking_is_referenced_callback + 30 (coreclr-bridge.m:306) 3 monotouchtest 0x102852504 ObjCMarshalNative::IsTrackedReference(Object*, bool*) + 100 (interoplibinterface_objc.cpp:141) 4 monotouchtest 0x102808bc7 GCToEEInterface::RefCountedHandleCallbacks(Object*) + 39 (gcenv.ee.cpp:177) 5 monotouchtest 0x10284a7df PromoteRefCounted(Object**, unsigned long*, unsigned long, unsigned long) + 79 (objecthandle.cpp:98) 6 monotouchtest 0x1028490ae ScanConsecutiveHandlesWithoutUserData(Object**, Object**, ScanCallbackInfo*, unsigned long*) + 63 (handletablescan.cpp:442) [inlined] 7 monotouchtest 0x1028490ae BlockScanBlocksWithoutUserData(TableSegment*, unsigned int, unsigned int, ScanCallbackInfo*) + 126 (handletablescan.cpp:554) 8 monotouchtest 0x10284a05c SegmentScanByTypeChain(TableSegment*, unsigned int, void (*)(TableSegment*, unsigned int, unsigned int, ScanCallbackInfo*), ScanCallbackInfo*) + 56 (handletablescan.cpp:1632) [inlined] 9 monotouchtest 0x10284a05c TableScanHandles(HandleTable*, unsigned int const*, unsigned int, TableSegment* (*)(HandleTable*, TableSegment*, CrstHolderWithState*), void (*)(TableSegment*, unsigned int, unsigned int, ScanCallbackInfo*), ScanCallbackInfo*, CrstHolderWithState*) + 396 (handletablescan.cpp:1749) 10 monotouchtest 0x102845ef3 HndScanHandlesForGC(HandleTable*, void (*)(Object**, unsigned long*, unsigned long, unsigned long), unsigned long, unsigned long, unsigned int const*, unsigned int, unsigned int, unsigned int, unsigned int) + 371 (handletable.cpp:794) 11 monotouchtest 0x10284b84d Ref_TraceNormalRoots(unsigned int, unsigned int, ScanContext*, void (*)(Object**, ScanContext*, unsigned int)) + 1405 (objecthandle.cpp:1171) 12 monotouchtest 0x1028236cb WKS::gc_heap::mark_phase(int) + 1659 (gc.cpp:30142) 13 monotouchtest 0x1028203a4 WKS::gc_heap::gc1() + 804 (gc.cpp:22587) 14 monotouchtest 0x10282b1ff WKS::gc_heap::garbage_collect(int) + 1839 15 monotouchtest 0x10281c126 WKS::GCHeap::GarbageCollectGeneration(unsigned int, gc_reason) + 998 (gc.cpp:51582) 16 monotouchtest 0x1028427f6 WKS::GCHeap::GarbageCollectTry(int, int, int) + 13 (gc.cpp:50773) [inlined] 17 monotouchtest 0x1028427f6 WKS::GCHeap::GarbageCollect(int, bool, int) + 422 (gc.cpp:50703) 18 monotouchtest 0x102806b60 RhCollect + 80 (GCHelpers.cpp:124) 19 monotouchtest 0x10352e7cb monotouchtest_MonoTouchFixtures_CoreAnimation_LayerTest___c__DisplayClass9_0___TestBug26532_b__0 + 171 (LayerTest.cs:122) 20 monotouchtest 0x102c16d41 S_P_CoreLib_System_Threading_Thread_StartHelper__Callback + 161 (Thread.cs:45) 21 monotouchtest 0x102b9f0a9 S_P_CoreLib_System_Threading_ExecutionContext__RunInternal + 137 (ExecutionContext.cs:194) 22 monotouchtest 0x102b9c7cf S_P_CoreLib_System_Threading_Thread__StartThread + 335 (Thread.NativeAot.cs:440) 23 monotouchtest 0x102b9cac9 <deduplicated_symbol> + 25 24 libsystem_pthread.dylib 0x108b6a857 thread_start + 15 

Thread 0:: Dispatch queue: com.apple.main-thread 0 libsystem_kernel.dylib 0x108fa06f6 __psynch_cvwait + 10 1 libsystem_pthread.dylib 0x108b6f335 _pthread_cond_wait + 1039 2 monotouchtest 0x102c1c61c S_P_CoreLib_System_Threading_WaitSubsystem_ThreadWaitInfo__Wait + 412 (WaitSubsystem.ThreadWaitInfo.Unix.cs:332) 3 monotouchtest 0x102ba8bcc S_P_CoreLib_System_Threading_WaitSubsystem__Wait + 124 (WaitSubsystem.HandleManager.Unix.cs:35) 4 monotouchtest 0x102b9d2b1 S_P_CoreLib_System_Threading_Thread__JoinInternal + 145 (Thread.Unix.cs:68) 5 monotouchtest 0x10352dfec monotouchtest_MonoTouchFixtures_CoreAnimation_LayerTest__TestBug26532 + 140 (LayerTest.cs:136) 6 monotouchtest 0x103831c33 Internal_CompilerGenerated__Module___<DynamicInvoke>None<S_P_CoreLib_System_Void> + 35 7 monotouchtest 0x102bdba43 S_P_CoreLib_System_Reflection_DynamicInvokeInfo__Invoke + 243 (DynamicInvokeInfo.cs:230) 8 monotouchtest 0x102c3232f S_P_Reflection_Execution_Internal_Reflection_Execution_MethodInvokers_InstanceMethodInvoker__Invoke + 79 (InstanceMethodInvoker.cs:58) 9 monotouchtest 0x102c03958 S_P_CoreLib_Internal_Reflection_Core_Execution_MethodBaseInvoker__Invoke + 72 (MethodBaseInvoker.cs:30) 10 monotouchtest 0x102be3410 S_P_CoreLib_System_Reflection_Runtime_MethodInfos_RuntimeMethodInfo__Invoke + 112 (RuntimeMethodInfo.cs:166) 11 monotouchtest 0x10358e8a8 nunit_framework_NUnit_Framework_Internal_Reflect__InvokeMethod_0 + 40 12 monotouchtest 0x1035a12ce nunit_framework_NUnit_Framework_Internal_Commands_TestMethodCommand__Execute + 30 13 monotouchtest 0x10359cea2 nunit_framework_NUnit_Framework_Internal_Execution_SimpleWorkItem__PerformWork + 34 14 monotouchtest 0x10359e929 nunit_framework_NUnit_Framework_Internal_Execution_WorkItem__RunOnCurrentThread + 297 15 monotouchtest 0x10359a389 nunit_framework_NUnit_Framework_Internal_Execution_CompositeWorkItem__RunChildren + 521 16 monotouchtest 0x10359e91f nunit_framework_NUnit_Framework_Internal_Execution_WorkItem__RunOnCurrentThread + 287 17 monotouchtest 0x10359a389 nunit_framework_NUnit_Framework_Internal_Execution_CompositeWorkItem__RunChildren + 521 18 monotouchtest 0x10359e91f nunit_framework_NUnit_Framework_Internal_Execution_WorkItem__RunOnCurrentThread + 287 19 monotouchtest 0x10359a389 nunit_framework_NUnit_Framework_Internal_Execution_CompositeWorkItem__RunChildren + 521 20 monotouchtest 0x10359e91f nunit_framework_NUnit_Framework_Internal_Execution_WorkItem__RunOnCurrentThread + 287 21 monotouchtest 0x10359a389 nunit_framework_NUnit_Framework_Internal_Execution_CompositeWorkItem__RunChildren + 521 22 monotouchtest 0x10359e91f nunit_framework_NUnit_Framework_Internal_Execution_WorkItem__RunOnCurrentThread + 287 23 monotouchtest 0x102d37b07 Touch_Client_MonoTouch_NUnit_UI_BaseTouchRunner__Run_0 + 487 (TouchRunner.cs:640) 24 monotouchtest 0x102d364f5 Touch_Client_MonoTouch_NUnit_UI_BaseTouchRunner__Run + 53 (TouchRunner.cs:268) 25 monotouchtest 0x102d37e4f Touch_Client_MonoTouch_NUnit_UI_BaseTouchRunner___AutoRun_b__49_0 + 47 (TouchRunner.cs:228) 26 monotouchtest 0x102987ac4 Microsoft_iOS_Foundation_NSAsyncActionDispatcher__Apply + 36 (NSAction.cs:138) 27 monotouchtest 0x102987b9f <deduplicated_symbol> + 95 28 monotouchtest 0x1027ed23c -[__MonoMac_NSAsyncActionDispatcher xamarinApplySelector] + 76 (registrar.mm:138285) [...]