Repository Issues

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
 (635 indexed issues)
open beginner issues
 (631 open beginner issues)
Latest indexed
Jul 1, 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 7d 9h) (270 merged PRs in 30d)
Beginner labels
help wanted

Issues

633 open indexed issues

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Open
`args` is nullable-oblivious in top-level statements
Area-CompilersFeature - Nullable Reference TypesFeature - Simple Programshelp wanted

dotnet/roslyn #84,293 opened Jun 25, 2026 · C# · 20,414 stars

Why recommendedNo comments yet · Contributing guide available
No comments yetContributing guide available
0 comments0 reactions1 assignee
Open
compilation error for multiple top-level statements
Area-CompilersConcept-Diagnostic ClarityFeature - Simple Programshelp wanted

dotnet/roslyn #83,691 opened May 12, 2026 · C# · 20,414 stars

Why recommendedNo assignee yet · Contributing guide available
No assignee yetContributing guide available
1 comment0 reactions0 assignees
Open
Improve CS9105 in static context
Area-CompilersConcept-Diagnostic ClarityFeature - Primary Constructorshelp wanted

dotnet/roslyn #82,423 opened Feb 16, 2026 · C# · 20,414 stars

Why recommendedNo assignee yet · Contributing guide available
No assignee yetContributing guide available
4 comments0 reactions0 assignees
Open
CS0219 not working for non-primitive types
Area-CompilersConcept-Diagnostic Clarityhelp wanted

dotnet/roslyn #81,743 opened Dec 17, 2025 · C# · 20,414 stars

Why recommendedNo assignee yet · Contributing guide available
No assignee yetContributing guide available
5 comments1 reaction0 assignees
Open
CS8618 suggests using `required` on events.
Area-CompilersConcept-Diagnostic Clarityhelp wanted

dotnet/roslyn #81,679 opened Dec 13, 2025 · C# · 20,414 stars

Why recommendedNo assignee yet · Contributing guide available
No assignee yetContributing guide available
2 comments0 reactions0 assignees
Open
intellisense in VB.net is broken
Area-IDEhelp wanted

dotnet/roslyn #81,653 opened Dec 11, 2025 · C# · 20,414 stars

Why recommendedNo assignee yet · Contributing guide available
No assignee yetContributing guide available
1 comment0 reactions0 assignees
Open
Honor BuildInParallel
Area-Compilershelp wanted

dotnet/roslyn #82,173 opened Dec 6, 2025 · C# · 20,414 stars

Why recommendedNo assignee yet · Contributing guide available
No assignee yetContributing guide available
7 comments0 reactions0 assignees