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
 (636 indexed issues)
open beginner issues
 (629 open beginner issues)
Latest indexed
Jul 24, 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
VB - wrong execution flow while debugging
Area-InteractiveBugLanguage-VBhelp wanted

dotnet/roslyn #48,575 opened Oct 13, 2020 · 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
DebuggerDisplay fails when access properties in records
Area-InteractiveBugFeature - Recordshelp wanted

dotnet/roslyn #48,469 opened Oct 9, 2020 · 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
IDE0051 should factor in new dependency attributes in .NET 5
Area-IDEConcept-Continuous ImprovementFeature - IDE0051help wanted

dotnet/roslyn #48,206 opened Sep 30, 2020 · C# · 20,414 stars

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

dotnet/roslyn #48,111 opened Sep 28, 2020 · 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
Optimize pattern matching over large tuple literals
Area-CompilersCode Gen QualityFeature - Pattern Matchinghelp wanted

dotnet/roslyn #48,052 opened Sep 25, 2020 · 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
Add extension types to default .editorconfig templates
Area-IDEConcept-Continuous Improvementhelp wanted

dotnet/roslyn #47,787 opened Sep 17, 2020 · C# · 20,414 stars

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

dotnet/roslyn #47,648 opened Sep 12, 2020 · 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
Slice can be simplified does not produce the same code
Area-CompilersCode Gen QualityFeature - Rangehelp wanted

dotnet/roslyn #47,629 opened Sep 11, 2020 · C# · 20,414 stars

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

dotnet/roslyn #46,795 opened Aug 13, 2020 · 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