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
 (638 indexed issues)
open beginner issues
 (632 open beginner issues)
Latest indexed
Aug 14, 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

Open
Allow unsafe code in Interactive Window
Area-InteractiveConcept-Continuous ImprovementInteractive-ScriptingIDEhelp wanted
Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available

dotnet / roslyn · #48631 · Oct 15, 2020 · C# · 20,414 stars

8 comments5 reactions0 assignees
Open
VB - wrong execution flow while debugging
Area-InteractiveBugLanguage-VBhelp wanted
Why recommendedNo assignee yet · No comments yet
No assignee yetNo comments yetHas a beginner-friendly labelContributing guide available

dotnet / roslyn · #48575 · Oct 13, 2020 · C# · 20,414 stars

0 comments0 reactions0 assignees
Open
DebuggerDisplay fails when access properties in records
Area-InteractiveBugFeature - Recordshelp wanted
Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available

dotnet / roslyn · #48469 · Oct 9, 2020 · C# · 20,414 stars

2 comments0 reactions0 assignees
Open
IDE0051 should factor in new dependency attributes in .NET 5
Area-IDEConcept-Continuous ImprovementFeature - IDE0051help wanted
Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available

dotnet / roslyn · #48206 · Sep 30, 2020 · C# · 20,414 stars

9 comments3 reactions0 assignees
Open
Change signature does not add constructor base call
Area-IDEBugIDE-CodeStylehelp wanted
Why recommendedNo assignee yet · No comments yet
No assignee yetNo comments yetHas a beginner-friendly labelContributing guide available

dotnet / roslyn · #48111 · Sep 28, 2020 · C# · 20,414 stars

0 comments0 reactions0 assignees
Open
Optimize pattern matching over large tuple literals
Area-CompilersCode Gen QualityFeature - Pattern Matchinghelp wanted
Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available

dotnet / roslyn · #48052 · Sep 25, 2020 · C# · 20,414 stars

2 comments0 reactions0 assignees
Open
Add extension types to default .editorconfig templates
Area-IDEConcept-Continuous Improvementhelp wanted
Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available

dotnet / roslyn · #47787 · Sep 17, 2020 · C# · 20,414 stars

16 comments0 reactions0 assignees
Open
EE: "Internal error in C# compiler" reported for typeof(T?)
Area-InteractiveBugFeature - Nullable Type ParametersInteractive-Debugginghelp wanted
Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available

dotnet / roslyn · #47648 · Sep 12, 2020 · C# · 20,414 stars

1 comment0 reactions0 assignees
Open
Slice can be simplified does not produce the same code
Area-CompilersCode Gen QualityFeature - Rangehelp wanted
Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available

dotnet / roslyn · #47629 · Sep 11, 2020 · C# · 20,414 stars

10 comments5 reactions0 assignees
Open
Misleading error for await in the watch window
Area-InteractiveBughelp wanted
Why recommendedNo assignee yet · No comments yet
No assignee yetNo comments yetHas a beginner-friendly labelContributing guide available

dotnet / roslyn · #46795 · Aug 13, 2020 · C# · 20,414 stars

0 comments0 reactions0 assignees