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dotnet/roslyn

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

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Stars
 (20,414 stars)
Forks
 (4,257 forks)
Indexed issues
 (636 indexed issues)
open beginner issues
 (629 open beginner issues)
Latest indexed
Jul 17, 2026
Last GitHub push
May 15, 2026
License
MIT License
Contributing guide
Contributing guide
Code of conduct
Code of conduct
Dominant language
C#
PR merge metrics
 (Avg merge 6d 17h) (256 merged PRs in 30d)
Beginner labels
help wanted

Issues

632 open indexed issues

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Open
Cannot get type of implicitly typed array in VB.NET
Area-CompilersBugConcept-APILanguage-VBhelp wanted

dotnet/roslyn #11,933 opened Jun 11, 2016 · C# · 20,414 stars

Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available
5 comments0 reactions0 assignees
Open
Wrong error message for Task.Run with invalid argument
Area-CompilersConcept-Diagnostic ClarityInvestigatinghelp wanted

dotnet/roslyn #10,672 opened Apr 19, 2016 · C# · 20,414 stars

Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available
1 comment0 reactions0 assignees
Open
Parse await expression in VB when method is not async
Area-CompilersBugConcept-Diagnostic ClarityLanguage-VBhelp wanted

dotnet/roslyn #10,320 opened Apr 4, 2016 · C# · 20,414 stars

Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available
2 comments0 reactions0 assignees
Open
Escaping out of a cref tag is very difficult
Area-IDEBughelp wanted

dotnet/roslyn #10,015 opened Mar 23, 2016 · C# · 20,414 stars

Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available
2 comments0 reactions0 assignees