當 Fody 編寫程序集時，MSBuild 永遠掛起

Question

在我的解決方案中，許多項目使用Fody來注入PropertyChanged weaver。 不幸的是，在構建結束時，當Fody開始編寫最終程序集時，該過程掛起且無法恢復。

這是我正在執行的 MSBuild 命令：

set msbuildemitsolution=1
msbuild MyCompany.App.sln /t:Build /fl /flp:logfile=buildoutput.txt;verbosity=diagnostic /p:Configuration=Debug /p:Platform="Any CPU" /p:UseSharedCompilation=false

這是構建的日志：

AfterCompile:
   Beginning transformation.   
   Transformation succeeded 
FodyTarget:
    Fody: Fody (version 3.0.3.0) Executing
    Fody: ProjectDirectory: 'C:\Dev\Client\MyCompany.App.Client.Shell\'.
    Fody: AssemblyPath: 'C:\Dev\Client\MyCompany.App.Client.Shell\obj\Debug\MyCompany.App.Client.Shell.exe'
    Fody: Found path to weavers file 'C:\Dev\Client\MyCompany.App.Client.Shell\FodyWeavers.xml'.
    Fody: SolutionDirectory path is 'C:\Dev\'
    Fody: Finding weavers
    Fody: FindAddinDirectories:
    Fody:   No PackageDefinitions
    Fody:   Scanning SolutionDir/Packages convention: C:\Dev\packages'.
    Fody:     Fody weaver file added 'C:\Dev\packages\PropertyChanged.Fody.2.5.4\netclassicweaver\PropertyChanged.Fody.dll'
    Fody:   Skipped directory from Nuget Config since it could not be derived.
    Fody:   Scanning the MsBuildThisFileDirectory parent: C:\Dev\'.
    Fody:   Skipped scanning 'C:\Dev\Tools' since it doesn't exist.
    Fody:   Skipped NuGetPackageRoot since it is not defined.
    Fody: No Weaver project file found.
    Fody: Finished finding weavers 25ms
    Fody: Creating a new AssemblyLoadContext
    Fody: Reference count=209
    Fody: References:   *follows long list of references...*
    Fody: Found debug symbols at 'C:\Dev\Client\MyCompany.App.Client.Shell\obj\Debug\MyCompany.App.Client.Shell.pdb'.
    Fody: Weaver 'C:\Dev\packages\PropertyChanged.Fody.2.5.4\netclassicweaver\PropertyChanged.Fody.dll'.
    Fody:   Initializing weaver
    Fody:   Loading 'C:\Dev\packages\PropertyChanged.Fody.2.5.4\netclassicweaver\PropertyChanged.Fody.dll' from disk.
    Fody: Can't find 'FSharp.Core, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null'.
    Fody: Can't find 'System.Diagnostics.Tracing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'.
    Fody: Can't find 'System.IO.Compression, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'.
    Fody: Can't find 'System.IO.Compression.FileSystem, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'.
    Fody: Can't find 'System.Numerics, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'.
    Fody: Can't find 'System.Transactions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'.
      Fody/PropertyChanged:   Executing Weaver
      Fody/PropertyChanged:     MyCompany.App.Client.Shell.ViewModels.SplashScreenViewModel
      Fody/PropertyChanged:             Model
      Fody/PropertyChanged:                     Model skipped since call already exists
      Fody/PropertyChanged:     MyCompany.App.Client.Shell.Model.ShellWindowModel
      Fody/PropertyChanged:             ProgramProvider
      Fody/PropertyChanged:                     ProgramProvider
      Fody/PropertyChanged:             UiEnabledContext
      Fody/PropertyChanged:                     UiEnabledContext
      Fody/PropertyChanged:             SizingContext
      Fody/PropertyChanged:                     SizingContext
      Fody/PropertyChanged:             ProgramHeaderRegionVisibility
      Fody/PropertyChanged:                     ProgramHeaderRegionVisibility
      Fody/PropertyChanged:             EnvironmentVersion
      Fody/PropertyChanged:                     EnvironmentVersion
      Fody/PropertyChanged:             EnvironmentVersionFontFamily
      Fody/PropertyChanged:                     EnvironmentVersionFontFamily
      Fody/PropertyChanged:             EnvironmentVersionFontColor
      Fody/PropertyChanged:                     EnvironmentVersionFontColor
      Fody/PropertyChanged:             EnvironmentVersionFontSize
      Fody/PropertyChanged:                     EnvironmentVersionFontSize
      Fody/PropertyChanged:             Title
      Fody/PropertyChanged:                     Title
      Fody/PropertyChanged:             RibbonSelectedIndex
      Fody/PropertyChanged:                     RibbonSelectedIndex
      Fody/PropertyChanged:             IsBusy
      Fody/PropertyChanged:                     IsBusy
      Fody/PropertyChanged:             IsTaskButtonsBusy
      Fody/PropertyChanged:                     IsTaskButtonsBusy
      Fody/PropertyChanged:             ShellContext
      Fody/PropertyChanged:                     ShellContext
      Fody/PropertyChanged:             ConsoleEditingContext
      Fody/PropertyChanged:                     ConsoleEditingContext
      Fody/PropertyChanged:             Icon
      Fody/PropertyChanged:                     Icon
      Fody/PropertyChanged:             IsOptionNavigationEnabled
      Fody/PropertyChanged:                     IsOptionNavigationEnabled
      Fody/PropertyChanged:     MyCompany.App.Client.Shell.Model.SplashScreenModel
      Fody/PropertyChanged:             LoadingMessages
      Fody/PropertyChanged:                     LoadingMessages
      Fody/PropertyChanged:             SelectedMessageIndex
      Fody/PropertyChanged:                     SelectedMessageIndex
      Fody/PropertyChanged:             NameVersion
      Fody/PropertyChanged:                     NameVersion
      Fody/PropertyChanged:             Environment
      Fody/PropertyChanged:                     Environment
      Fody/PropertyChanged:             EnvironmentColor
      Fody/PropertyChanged:                     EnvironmentColor
      Fody/PropertyChanged:     MyCompany.App.Client.Shell.ViewModels.ShellWindowViewModel
      Fody/PropertyChanged:             Model
      Fody/PropertyChanged:                     Model
      Fody/PropertyChanged:     MyCompany.App.Client.Shell.Model.ShellContext
      Fody/PropertyChanged:             IsInConsoleMode
      Fody/PropertyChanged:                     IsInConsoleMode
      Fody/PropertyChanged:   Finished 'PropertyChanged' in 162ms
      Fody/PropertyChanged:     Removing reference to 'PropertyChanged'.
    Fody:   Adding weaving info
    Fody:   Finished in 5ms
    Fody:   Writing assembly to 'C:\Dev\Client\MyCompany.App.Client.Shell\obj\Debug\MyCompany.App.Client.Shell.exe'.

在這種狀態下它會永遠掛起，如果我嘗試使用CTRL - C取消構建，我會收到以下消息：

Attempting to cancel the build... 
warning MSB4220: Waiting for the currently executing task "Fody.WeavingTask" to cancel.

該過程將繼續嘗試每 10 秒左右取消一次構建，但未成功。 MSBuild 任務變得無法終止，我需要重新啟動我的機器才能嘗試啟動另一個構建！

該項目使用了以下內容：

• Fody.3.0.3
• PropertyChanged.Fody.2.4.0

我使用的 msbuild 版本是16.4.0.56107

我嘗試更新到最新的 Fody 版本，但沒有幫助。

我知道這可能是一個漫長的過程； 如果有人對如何調查此問題有任何提示/想法，請分享。 謝謝你。

-- 編輯 -- 如果我從失敗的項目中刪除 PropertyChanged 和 Fody，則解決方案可以完成構建。 什么可能導致福迪掛起？

Answer 1

不幸的是，我無法隔離這個問題。 考慮到 Fody 不僅僅在我們的一個項目上工作，我最終用BindableBase類提供的 .Net 實現替換了 Fody 和 PropertyChanged

    private string title;
    public string Title 
    { 
        get => title;
        set => SetProperty(ref title, value);
    }

---

不確定這是否有幫助，但是我們注意到一些干擾可能來自硬盤驅動器根目錄中沒有擴展名的文件。 從c:\\Progra~1或c:\\Program類的內容中查看並重命名或刪除它

Answer 2

使用最新的編譯器和完全過時的 Fody 版本很可能會導致這種情況 - Fody（通過 Mono.Cecil）可能無法處理生成的 IL。