Request textDocument/documentSymbol fails when expanding a user-defined snippet

[rledyard]

Environment data

dotnet --info output:
.NET SDK:
Version: 8.0.100-preview.5.23303.2
Commit: 3fe444af72

Runtime Environment:
OS Name: Windows
OS Version: 10.0.19045
OS Platform: Windows
RID: win10-x64
Base Path: C:\Program Files\dotnet\sdk\8.0.100-preview.5.23303.2\

.NET workloads installed:
There are no installed workloads to display.

Host:
Version: 8.0.0-preview.5.23280.8
Architecture: x64
Commit: bc78804f5d

.NET SDKs installed:
6.0.411 [C:\Program Files\dotnet\sdk]
7.0.202 [C:\Program Files\dotnet\sdk]
7.0.203 [C:\Program Files\dotnet\sdk]
7.0.305 [C:\Program Files\dotnet\sdk]
8.0.100-preview.5.23303.2 [C:\Program Files\dotnet\sdk]

.NET runtimes installed:
Microsoft.AspNetCore.App 6.0.16 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 6.0.19 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 7.0.4 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 7.0.5 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 7.0.8 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 8.0.0-preview.5.23302.2 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.NETCore.App 6.0.15 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 6.0.16 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 6.0.19 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 7.0.4 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 7.0.5 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 7.0.8 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 8.0.0-preview.5.23280.8 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.WindowsDesktop.App 6.0.15 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 6.0.16 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 6.0.19 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 7.0.4 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 7.0.5 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 7.0.8 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 8.0.0-preview.5.23302.2 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]

VS Code version: 1.80.0

C# Extension version: 2.0.248
C# Dev Kit version: 0.1.103
C# Intellicode for DevKit: 0.1.26

OmniSharp log (C# Output)

[Error - 11:16:55 AM] Request textDocument/documentSymbol failed.
Error: name must not be falsy
at Function.validate (c:\Program Files\Microsoft VS Code\resources\app\out\vs\workbench\api\node\extensionHostProcess.js:95:17678)
at new r (c:\Program Files\Microsoft VS Code\resources\app\out\vs\workbench\api\node\extensionHostProcess.js:95:17973)
at V (c:\Users\randy.ledyard.vscode\extensions\ms-dotnettools.csharp-2.0.248-win32-x64\dist\extension.js:2:1969276)
at c (c:\Users\randy.ledyard.vscode\extensions\ms-dotnettools.csharp-2.0.248-win32-x64\dist\extension.js:2:2007332)
at Object.t.map (c:\Users\randy.ledyard.vscode\extensions\ms-dotnettools.csharp-2.0.248-win32-x64\dist\extension.js:2:2007418)
at Object.asDocumentSymbols (c:\Users\randy.ledyard.vscode\extensions\ms-dotnettools.csharp-2.0.248-win32-x64\dist\extension.js:2:1977094)
at r (c:\Users\randy.ledyard.vscode\extensions\ms-dotnettools.csharp-2.0.248-win32-x64\dist\extension.js:2:1915643)
at o.provideDocumentSymbols (c:\Program Files\Microsoft VS Code\resources\app\out\vs\workbench\api\node\extensionHostProcess.js:101:37263)

Steps to reproduce

1. Create a new CSharp file in the project.
2. type 'puc' at the top of the empty file in the editor (this is a user-defined snippet that expands to 'public class')
3. hit Tab - error appears at bottom of screen

Expected behavior

puc should expand to public class without throwing an error

Actual behavior

error appears at bottom of screen when hitting the Tab key to expand the user snippet

Additional context

this error did not occur when using the C#/OmniSharp setup, prior to using the new C# dev extension

the "puc" is my code snippet shortcut for this snippet:
"PublicClass": {
"prefix": "puc",
"body": ["public class "],
"description": "puc expands to public class"
},
which is in my AppData > Roaming > Code > User > snippets > csharp.json file

@beccamc - new bug as you requested
(from #5891 (comment))

[beccamc]

Sorry @rledyard, maybe I misread your original comment. This does look the same. Is it fixed on latest version 2.0.283? If not I'll take a look at a fix.

[rledyard]

@beccamc Yes it appears to work correctly now with my snippets.