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
 (633 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

638 indexed issues

Open
Suboptimal codegen for `is` pattern compared to .NET 6/7
Area-CompilersCode Gen QualityOngoing-Quality-Candidatehelp wanted
Why recommendedHas a beginner-friendly label · Contributing guide available
Has a beginner-friendly labelContributing guide available

dotnet / roslyn · #80052 · Aug 26, 2025 · C# · 20,414 stars

3 comments1 reaction1 assignee
Open
Sync Namespaces at folder level
Area-IDEhelp wanted
Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available

dotnet / roslyn · #79185 · Jun 28, 2025 · C# · 20,414 stars

1 comment0 reactions0 assignees
Open
Add help wanted label for #57847
Area-IDEIDE-CodeStylehelp wanted
Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available

dotnet / roslyn · #79150 · Jun 26, 2025 · C# · 20,414 stars

1 comment0 reactions0 assignees
Open
IDE0004 Cast is redundant false positive VB
Area-IDEFeature - IDE0004help wanted
Why recommendedNo assignee yet · No comments yet
No assignee yetNo comments yetHas a beginner-friendly labelContributing guide available

dotnet / roslyn · #78185 · Apr 17, 2025 · C# · 20,414 stars

0 comments0 reactions0 assignees
Open
Custom BannedSymbols file name and extension
Area-IDEhelp wanted
Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available

dotnet / roslyn · #78124 · Apr 11, 2025 · C# · 20,414 stars

1 comment1 reaction0 assignees
Open
Need an API to get the 'iteration type' of a type.
Area-CompilersConcept-APIFeature Requestapi-approvedhelp wanted
Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available

dotnet / roslyn · #77926 · Mar 31, 2025 · C# · 20,414 stars

6 comments0 reactions0 assignees
Open
Rename feature in XAML within VS2022
Area-IDEhelp wanted
Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available

dotnet / roslyn · #77894 · Mar 28, 2025 · C# · 20,414 stars

2 comments0 reactions0 assignees
Open
Entering in GlobalSuppressions is complicated
Area-IDEhelp wanted
Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available

dotnet / roslyn · #77142 · Feb 10, 2025 · C# · 20,414 stars

1 comment0 reactions0 assignees