roslyn
https://github.com/dotnet/roslyn
C#
The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.
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- Issues
- [release/stable] Include crossgen'd DLLs in the symbols package
- Per server workspace and project factories
- Add `params ReadOnlySpan<T>` constructor overload to syntax list types.
- Test host hangs and crashes in LanguageServer and Razor Cohost tests (May 2026)
- Add Razor compiler integration tests for most C# features since C# 8
- Use `params ImmutableArray<T>` on all applicable public APIs.
- Extract symreader changes from AOT-compat PR #82927
- Prevent helix partitioning from creating hundreds of work items items when no history available
- helix runtests
- Rationalize the different command lines for RunTests
- Docs
- C# not yet supported