Hot reload crash when add new file to wwwroot

[keatkeat87]

Is there an existing issue for this?

• I have searched the existing issues

Describe the bug

when dotnet watch run
Adding a file to wwwroot will crash hot reload.
Please check Steps To Reproduce for details.

Expected Behavior

hot reload no crash

Steps To Reproduce

https://github.com/keatkeat87/aspnet-core-hot-reload-issue.git

dotnet new webapp -o TestHotReload
dotnet watch run --verbose
Create a file in wwwroot
Set-Content -Path ".\wwwroot\test.txt" -Value "hello"

Error:

dotnet watch ⌚ File added: .\wwwroot\test.txt
dotnet watch ⌚ Terminating remaining child processes.
dotnet watch ⌚ [TestHotReload (net10.0)] Terminating process 13256 (Ctrl+C).
info: Microsoft.Hosting.Lifetime[0]
      Application is shutting down...
dotnet watch ⌚ [TestHotReload (net10.0)] Waiting for process 13256 to exit within 5s.
dotnet watch ⌚ [TestHotReload (net10.0)] Process id 13256 ran for 139541ms and exited with exit code 0.
dotnet watch ⌚ [TestHotReload (net10.0)] Exited
dotnet watch 🔥 [TestHotReload (net10.0)] Disposing agent communication pipe
dotnet watch 🌐 [Browser #1] Disconnected.
dotnet watch ❌ An unexpected error occurred: System.InvalidOperationException: Unexpected true - file HotReloadMSBuildWorkspace.cs line 158
   at Microsoft.CodeAnalysis.Contract.Fail(String message, Int32 lineNumber, String filePath)
   at Microsoft.CodeAnalysis.ExternalAccess.HotReload.Api.HotReloadMSBuildWorkspace.UpdateFileContentAsync(IEnumerable`1 changedFiles, CancellationToken cancellationToken)
   at Microsoft.DotNet.Watch.CompilationHandler.UpdateFileContentAsync(IReadOnlyList`1 changedFiles, CancellationToken cancellationToken)
   at Microsoft.DotNet.Watch.HotReloadDotNetWatcher.<>c__DisplayClass13_3.<<WatchAsync>g__CaptureChangedFilesSnapshot|8>d.MoveNext()
--- End of stack trace from previous location ---
   at Microsoft.DotNet.Watch.HotReloadDotNetWatcher.WatchAsync(CancellationToken shutdownCancellationToken)
   at Microsoft.DotNet.Watch.HotReloadDotNetWatcher.WatchAsync(CancellationToken shutdownCancellationToken)
   at Microsoft.DotNet.Watch.Program.RunAsync()

Remark:
Edit file content is ok.
Adding a file to outside wwwroot is ok.
Delete file inside wwwroot is ok.

.NET Version

10.0.300

Anything else?

.NET SDK:
Version: 10.0.300
Commit: caa81fa497
Workload version: 10.0.300-manifests.e0989437
MSBuild version: 18.6.3+caa81fa49

Runtime Environment:
OS Name: Windows
OS Version: 10.0.26200
OS Platform: Windows
RID: win-x64
Base Path: C:\Program Files\dotnet\sdk\10.0.300\

.NET workloads installed:
There are no installed workloads to display.
Configured to use workload sets when installing new manifests.
No workload sets are installed. Run "dotnet workload restore" to install a workload set.

Host:
Version: 10.0.8
Architecture: x64
Commit: 94ea82652c

.NET SDKs installed:
10.0.108 [C:\Program Files\dotnet\sdk]
10.0.300 [C:\Program Files\dotnet\sdk]

.NET runtimes installed:
Microsoft.AspNetCore.App 8.0.27 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 9.0.16 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 10.0.8 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.NETCore.App 8.0.27 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 9.0.16 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 10.0.8 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.WindowsDesktop.App 8.0.27 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 9.0.16 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 10.0.8 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]

Other architectures found:
x86 [C:\Program Files (x86)\dotnet]
registered at [HKLM\SOFTWARE\dotnet\Setup\InstalledVersions\x86\InstallLocation]

Environment variables:
Not set

global.json file:
Not found

Learn more:
https://aka.ms/dotnet/info

Download .NET:
https://aka.ms/dotnet/download

[Youssef1313]

@tmat @jasonmalinowski Should this belong to dotnet/roslyn?