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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
 (638 indexed issues)
open beginner issues
 (633 open beginner issues)
Latest indexed
Aug 14, 2026
Last GitHub push
May 15, 2026
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

638 indexed issues

Open
Remove unneccessary instructions from variable-less filter
Area-CompilersConcept-Continuous ImprovementFeature Requesthelp wanted
Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available

dotnet / roslyn · #4388 · Aug 6, 2015 · C# · 20,414 stars

4 comments0 reactions0 assignees
Open
A CoreCLR JIT test fails to compile with Roslyn
Area-InteractiveInteractive-EnChelp wanted
Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available

dotnet / roslyn · #3915 · Jul 12, 2015 · C# · 20,414 stars

8 comments0 reactions0 assignees
Open
Add /pdb:file option to vbc.exe
Area-CompilersFeature Requesthelp wanted
Why recommendedNo assignee yet · No comments yet
No assignee yetNo comments yetHas a beginner-friendly labelContributing guide available

dotnet / roslyn · #3859 · Jul 7, 2015 · C# · 20,414 stars

0 comments1 reaction0 assignees
Open
C# string interpolation has poor error recovery
Area-CompilersBugConcept-Diagnostic ClarityLanguage-C#help wanted
Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available

dotnet / roslyn · #3771 · Jul 1, 2015 · C# · 20,414 stars

2 comments0 reactions0 assignees
Open
Reported conversion type
Area-CompilersConcept-APIInvestigation RequiredQuestionhelp wanted
Why recommendedNo assignee yet · No comments yet
No assignee yetNo comments yetHas a beginner-friendly labelContributing guide available

dotnet / roslyn · #1832 · Apr 7, 2015 · C# · 20,414 stars

0 comments0 reactions0 assignees