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minesworld / AkkaSychronizedDispatcherBug

Test case for Akka.net SynchronizedDispatcher Visual Studio debugger invoking an access violation

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Having App.xaml.cs open two windows and debugging it will create an 'Access violation' while starting without debugging does not...

Starting with or without debugger attached works fine if only one window is created.

The solution contains different projects all behaving the same way:

  • TestInWindow
    • TextBox bound to a property of Window created using CommunityToolkit.MVVM . The property value is updated from an Actor dispatched synchronized.
  • TestInWindowDirectSet
    • TestBox.Text set from an Actor dispatched synchronized.
  • TestViaDispatcherQueue
    • TextBox bound to a property of Window created using CommunityToolkit.MVVM . The property value is updated from an unsynchronized actor via the Windows DispatcherQueue.TryEnqueue

All projects above create the Actors within the Windows creation method after this.InitializeComponent()

  • TestActorCreatedByActor
    • TextBox bound to a property of Window created using CommunityToolkit.MVVM . The property value is updated from an unsynchronized actor via the Windows DispatcherQueue.TryEnqueue
    • the Actor is created from another already running actor
  • TestActorCreatedByActorOnPageLoaded
    • same as TestActorCreatedByActor but the TextBox is on its own Page. The message to create the Actor updating its value is create after the Page is loaded

The debug output is: before after the Actor is created / sending a message to create no context! if SynchronizationContext.Current == null before creating the Actor / sending a message to create

'TestInWindow.exe' (CoreCLR: DefaultDomain): Loaded 'E:\vstmp\AkkaSynchronizedDispatcherBug\TestInWindow\bin\x86\Debug\net6.0-windows10.0.19041.0\win10-x86\AppX\System.Private.CoreLib.dll'. 
'TestInWindow.exe' (CoreCLR: clrhost): Loaded 'E:\vstmp\AkkaSynchronizedDispatcherBug\TestInWindow\bin\x86\Debug\net6.0-windows10.0.19041.0\win10-x86\AppX\TestInWindow.dll'. Symbols loaded.
'TestInWindow.exe' (CoreCLR: clrhost): Loaded 'E:\vstmp\AkkaSynchronizedDispatcherBug\TestInWindow\bin\x86\Debug\net6.0-windows10.0.19041.0\win10-x86\AppX\System.Runtime.dll'. 
'TestInWindow.exe' (CoreCLR: clrhost): Loaded 'E:\vstmp\AkkaSynchronizedDispatcherBug\TestInWindow\bin\x86\Debug\net6.0-windows10.0.19041.0\win10-x86\AppX\WinRT.Runtime.dll'. 
'TestInWindow.exe' (CoreCLR: clrhost): Loaded 'E:\vstmp\AkkaSynchronizedDispatcherBug\TestInWindow\bin\x86\Debug\net6.0-windows10.0.19041.0\win10-x86\AppX\System.Runtime.InteropServices.dll'. 
'TestInWindow.exe' (CoreCLR: clrhost): Loaded 'E:\vstmp\AkkaSynchronizedDispatcherBug\TestInWindow\bin\x86\Debug\net6.0-windows10.0.19041.0\win10-x86\AppX\System.Collections.dll'. 
'TestInWindow.exe' (CoreCLR: clrhost): Loaded 'E:\vstmp\AkkaSynchronizedDispatcherBug\TestInWindow\bin\x86\Debug\net6.0-windows10.0.19041.0\win10-x86\AppX\System.Collections.Concurrent.dll'. 
'TestInWindow.exe' (CoreCLR: clrhost): Loaded 'E:\vstmp\AkkaSynchronizedDispatcherBug\TestInWindow\bin\x86\Debug\net6.0-windows10.0.19041.0\win10-x86\AppX\System.Threading.dll'. 
'TestInWindow.exe' (CoreCLR: clrhost): Loaded 'E:\vstmp\AkkaSynchronizedDispatcherBug\TestInWindow\bin\x86\Debug\net6.0-windows10.0.19041.0\win10-x86\AppX\Microsoft.WinUI.dll'. 
'TestInWindow.exe' (CoreCLR: clrhost): Loaded 'E:\vstmp\AkkaSynchronizedDispatcherBug\TestInWindow\bin\x86\Debug\net6.0-windows10.0.19041.0\win10-x86\AppX\System.Runtime.CompilerServices.Unsafe.dll'. 
'TestInWindow.exe' (CoreCLR: clrhost): Loaded 'E:\vstmp\AkkaSynchronizedDispatcherBug\TestInWindow\bin\x86\Debug\net6.0-windows10.0.19041.0\win10-x86\AppX\System.Private.Uri.dll'. 
'TestInWindow.exe' (CoreCLR: clrhost): Loaded 'E:\vstmp\AkkaSynchronizedDispatcherBug\TestInWindow\bin\x86\Debug\net6.0-windows10.0.19041.0\win10-x86\AppX\System.ObjectModel.dll'. Symbols loaded.
'TestInWindow.exe' (CoreCLR: clrhost): Loaded 'E:\vstmp\AkkaSynchronizedDispatcherBug\TestInWindow\bin\x86\Debug\net6.0-windows10.0.19041.0\win10-x86\AppX\System.ComponentModel.dll'. 
'TestInWindow.exe' (CoreCLR: clrhost): Loaded 'E:\vstmp\AkkaSynchronizedDispatcherBug\TestInWindow\bin\x86\Debug\net6.0-windows10.0.19041.0\win10-x86\AppX\System.Numerics.Vectors.dll'. 
'TestInWindow.exe' (CoreCLR: clrhost): Loaded 'E:\vstmp\AkkaSynchronizedDispatcherBug\TestInWindow\bin\x86\Debug\net6.0-windows10.0.19041.0\win10-x86\AppX\Microsoft.Windows.SDK.NET.dll'. 
'TestInWindow.exe' (CoreCLR: clrhost): Loaded 'E:\vstmp\AkkaSynchronizedDispatcherBug\TestInWindow\bin\x86\Debug\net6.0-windows10.0.19041.0\win10-x86\AppX\System.Security.Cryptography.Algorithms.dll'. 
'TestInWindow.exe' (CoreCLR: clrhost): Loaded 'E:\vstmp\AkkaSynchronizedDispatcherBug\TestInWindow\bin\x86\Debug\net6.0-windows10.0.19041.0\win10-x86\AppX\System.Security.Cryptography.Primitives.dll'. 
'TestInWindow.exe' (CoreCLR: clrhost): Loaded 'E:\vstmp\AkkaSynchronizedDispatcherBug\TestInWindow\bin\x86\Debug\net6.0-windows10.0.19041.0\win10-x86\AppX\System.Linq.dll'. 
'TestInWindow.exe' (CoreCLR: clrhost): Loaded 'E:\vstmp\AkkaSynchronizedDispatcherBug\TestInWindow\bin\x86\Debug\net6.0-windows10.0.19041.0\win10-x86\AppX\System.Memory.dll'. 
'TestInWindow.exe' (CoreCLR: clrhost): Loaded 'E:\vstmp\AkkaSynchronizedDispatcherBug\TestInWindow\bin\x86\Debug\net6.0-windows10.0.19041.0\win10-x86\AppX\Microsoft.InteractiveExperiences.Projection.dll'. 
'TestInWindow.exe' (CoreCLR: clrhost): Loaded 'E:\vstmp\AkkaSynchronizedDispatcherBug\TestInWindow\bin\x86\Debug\net6.0-windows10.0.19041.0\win10-x86\AppX\System.Linq.Expressions.dll'. 
'TestInWindow.exe' (CoreCLR: clrhost): Loaded 'E:\vstmp\AkkaSynchronizedDispatcherBug\TestInWindow\bin\x86\Debug\net6.0-windows10.0.19041.0\win10-x86\AppX\System.Reflection.Emit.dll'. 
'TestInWindow.exe' (CoreCLR: clrhost): Loaded 'Snippets'. 
'TestInWindow.exe' (CoreCLR: clrhost): Loaded 'E:\vstmp\AkkaSynchronizedDispatcherBug\TestInWindow\bin\x86\Debug\net6.0-windows10.0.19041.0\win10-x86\AppX\Akka.dll'. Symbols loaded.
'TestInWindow.exe' (CoreCLR: clrhost): Loaded 'E:\vstmp\AkkaSynchronizedDispatcherBug\TestInWindow\bin\x86\Debug\net6.0-windows10.0.19041.0\win10-x86\AppX\System.Collections.Immutable.dll'. 
'TestInWindow.exe' (CoreCLR: clrhost): Loaded 'E:\vstmp\AkkaSynchronizedDispatcherBug\TestInWindow\bin\x86\Debug\net6.0-windows10.0.19041.0\win10-x86\AppX\System.Text.RegularExpressions.dll'. 
'TestInWindow.exe' (CoreCLR: clrhost): Loaded 'E:\vstmp\AkkaSynchronizedDispatcherBug\TestInWindow\bin\x86\Debug\net6.0-windows10.0.19041.0\win10-x86\AppX\System.Console.dll'. 
'TestInWindow.exe' (CoreCLR: clrhost): Loaded 'E:\vstmp\AkkaSynchronizedDispatcherBug\TestInWindow\bin\x86\Debug\net6.0-windows10.0.19041.0\win10-x86\AppX\System.Reflection.Emit.ILGeneration.dll'. 
'TestInWindow.exe' (CoreCLR: clrhost): Loaded 'E:\vstmp\AkkaSynchronizedDispatcherBug\TestInWindow\bin\x86\Debug\net6.0-windows10.0.19041.0\win10-x86\AppX\System.Reflection.Emit.Lightweight.dll'. 
'TestInWindow.exe' (CoreCLR: clrhost): Loaded 'E:\vstmp\AkkaSynchronizedDispatcherBug\TestInWindow\bin\x86\Debug\net6.0-windows10.0.19041.0\win10-x86\AppX\System.Reflection.Primitives.dll'. 
'TestInWindow.exe' (CoreCLR: clrhost): Loaded 'E:\vstmp\AkkaSynchronizedDispatcherBug\TestInWindow\bin\x86\Debug\net6.0-windows10.0.19041.0\win10-x86\AppX\System.Threading.Thread.dll'. 
'TestInWindow.exe' (CoreCLR: clrhost): Loaded 'E:\vstmp\AkkaSynchronizedDispatcherBug\TestInWindow\bin\x86\Debug\net6.0-windows10.0.19041.0\win10-x86\AppX\Newtonsoft.Json.dll'. Symbols loaded.
'TestInWindow.exe' (CoreCLR: clrhost): Loaded 'E:\vstmp\AkkaSynchronizedDispatcherBug\TestInWindow\bin\x86\Debug\net6.0-windows10.0.19041.0\win10-x86\AppX\netstandard.dll'. 
'TestInWindow.exe' (CoreCLR: clrhost): Loaded 'E:\vstmp\AkkaSynchronizedDispatcherBug\TestInWindow\bin\x86\Debug\net6.0-windows10.0.19041.0\win10-x86\AppX\System.Runtime.Serialization.Formatters.dll'. 
'TestInWindow.exe' (CoreCLR: clrhost): Loaded 'E:\vstmp\AkkaSynchronizedDispatcherBug\TestInWindow\bin\x86\Debug\net6.0-windows10.0.19041.0\win10-x86\AppX\Microsoft.Extensions.ObjectPool.dll'. 
'TestInWindow.exe' (CoreCLR: clrhost): Loaded 'E:\vstmp\AkkaSynchronizedDispatcherBug\TestInWindow\bin\x86\Debug\net6.0-windows10.0.19041.0\win10-x86\AppX\System.Diagnostics.TraceSource.dll'. 
'TestInWindow.exe' (CoreCLR: clrhost): Loaded 'E:\vstmp\AkkaSynchronizedDispatcherBug\TestInWindow\bin\x86\Debug\net6.0-windows10.0.19041.0\win10-x86\AppX\System.Threading.ThreadPool.dll'. 
'TestInWindow.exe' (CoreCLR: clrhost): Loaded 'Anonymously Hosted DynamicMethods Assembly'. 
The program '[55328] TestInWindow.exe' has exited with code 3221225477 (0xc0000005) 'Access violation'.

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Test case for Akka.net SynchronizedDispatcher Visual Studio debugger invoking an access violation

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