[main] Source code updates from dotnet/dotnet

[dotnet-maestro]

Note

This is a codeflow update. It may contain both source code changes from
the VMR
as well as dependency updates. Learn more here.

This pull request brings the following source code changes

From https://github.com/dotnet/dotnet

• Subscription: 68bcfd48-e237-4022-9011-da7f2d2b96e6
• Build: 20260228.4 (303821)
• Date Produced: February 28, 2026 6:10:00 PM UTC
• Commit: 9125b1394d3efb03c42d9120f9eb36325e5f80b7
• Commit Diff: 7b9ad20...9125b13
• Branch: main

Updated Dependencies

• From 5.5.0-2.26120.3 to 5.5.0-2.26128.104
  • Roslyn.Diagnostics.Analyzers
• From 3.0.0-alpha.1.26062.101 to 3.0.0-preview.3.26128.104
  • System.CommandLine

Associated changes in source repos

• dotnet/arcade@a4691bd...38eefc1
• dotnet/aspnetcore@30d4d50...8dc0b08
• dotnet/command-line-api@cf5fd8d...a3bae7d
• dotnet/deployment-tools@c3dd160...b94499d
• dotnet/diagnostics@73f1fdc...970c803
• dotnet/efcore@347ab47...a707320
• dotnet/emsdk@36e24b2...34ea87b
• dotnet/fsharp@8413083...657fc0d
• dotnet/msbuild@2392c79...c48fb46
• NuGet/NuGet.Client@cc8f616...d2887cd
• dotnet/razor@2d8783f...a1bd540
• e97b493...24ed5cb
• dotnet/runtime@891c183...d7362ec
• dotnet/scenario-tests@21ded7e...5745f74
• dotnet/sdk@ec5f7d9...e90c441
• dotnet/source-build-reference-packages@70e51c1...53df2d8
• dotnet/sourcelink@8573980...6ea6adb
• dotnet/symreader@2255aa6...df88239
• dotnet/templating@413680c...fe60e19
• microsoft/vstest@bbee830...42e97b7
• dotnet/windowsdesktop@132afba...8350252
• dotnet/winforms@01eefd4...d65e8b0
• dotnet/wpf@48dfd1e...9484c1c

Diff the source with this PR branch

darc vmr diff --name-only https://github.com/dotnet/dotnet:9125b1394d3efb03c42d9120f9eb36325e5f80b7..https://github.com/dotnet/roslyn:darc-main-bc4b87f0-c13b-459f-9361-abbd52aed2bb

[dotnet-maestro]

Caution

🚨 Action Required — Conflict detected

A conflict was detected when trying to update this PR with changes from build 303682 of https://github.com/dotnet/dotnet/tree/29e27492f3c22a11530e45fcf3707987125b7edf.

The conflicts in the following files need to be manually resolved:

• src/LanguageServer/Microsoft.CodeAnalysis.LanguageServer/Program.cs
  🔍 View file in dotnet/roslyn vs VMR

ℹ️ To resolve the conflicts, please follow these steps:

1. Clone the current repository

   git clone https://github.com/dotnet/roslyn
   cd roslyn

2. Make sure your darc is up-to-date
   (version 1.1.0-beta.26123.3 or higher)

   # Linux / MacOS
   ./eng/common/darc-init.sh
   # or on Windows
   .\eng\common\darc-init.ps1

3. Run from repo's git clone and follow the instructions provided by the command to stage the conflict locally

   darc vmr resolve-conflict --subscription 68bcfd48-e237-4022-9011-da7f2d2b96e6

   This should apply the build 303682 with sources from 29e2749
4. Resolve the conflicts, commit & push the changes
5. Once pushed, the Codeflow verification check will turn green.
   If not, a new build might have flown into the PR and you might need to run the command above again.

💡 You may consult the FAQ for more information or tag @dotnet/prodconsvcs for assistance.

[dotnet-policy-service]

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