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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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 (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
Signature help not offered in positional pattern.
Area-CompilersArea-IDEBugFeature - Pattern MatchingLanguage-C#help wanted

dotnet/roslyn #9,101 opened Feb 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
Open
Make VB Compiler API related to VB scripting public again
Area-InteractiveInteractive-ScriptingLogicLanguage-VBhelp wanted

dotnet/roslyn #9,063 opened Feb 23, 2016 · C# · 20,414 stars

Why recommendedNo assignee yet · No comments yet
No assignee yetNo comments yetHas a beginner-friendly labelContributing guide available
0 comments0 reactions0 assignees
Open
csi auto or tab completion for dynamic objects
Area-InteractiveFeature Requesthelp wanted

dotnet/roslyn #8,720 opened Feb 15, 2016 · C# · 20,414 stars

Why recommendedNo assignee yet · No comments yet
No assignee yetNo comments yetHas a beginner-friendly labelContributing guide available
0 comments2 reactions0 assignees
Open
Syntax Normalizer ignores trivia when normalizing
Area-CompilersBugConcept-APIhelp wanted

dotnet/roslyn #8,536 opened Feb 10, 2016 · C# · 20,414 stars

Why recommendedNo assignee yet · No comments yet
No assignee yetNo comments yetHas a beginner-friendly labelContributing guide available
0 comments0 reactions0 assignees
Open
Unhandled ambiguity in doc comment completion
Area-IDEhelp wanted

dotnet/roslyn #8,326 opened Feb 2, 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
Rename doesn't resolve conflict via callsite cast
Area-IDEFeature - Renamehelp wanted

dotnet/roslyn #8,296 opened Feb 2, 2016 · C# · 20,414 stars

Why recommendedNo assignee yet · No comments yet
No assignee yetNo comments yetHas a beginner-friendly labelContributing guide available
0 comments0 reactions0 assignees
Open
runtimemetadataversion parameter not documented
Area-CompilersConcept-Diagnostic ClarityDocumentationhelp wanted

dotnet/roslyn #7,864 opened Jan 9, 2016 · C# · 20,414 stars

Why recommendedNo assignee yet · No comments yet
No assignee yetNo comments yetHas a beginner-friendly labelContributing guide available
0 comments1 reaction0 assignees
Open
Implement INamedTypeSymbol.IsImplicitClass in VB
Area-InteractiveBugInteractive-ScriptingLogicLanguage-VBhelp wanted

dotnet/roslyn #7,305 opened Dec 7, 2015 · C# · 20,414 stars

Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available
4 comments0 reactions0 assignees
Open
Code Style: Code fixes for xml doc comments
Area-IDEInternalAskhelp wanted

dotnet/roslyn #7,070 opened Nov 25, 2015 · C# · 20,414 stars

Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available
28 comments3 reactions0 assignees