Repository Issues

dotnet/runtime

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

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Stars
 (17,886 stars)
Forks
 (5,445 forks)
Indexed issues
 (385 indexed issues)
open beginner issues
 (368 open beginner issues)
Latest indexed
Jun 11, 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 12d 11h) (661 merged PRs in 30d)
Beginner labels
help wantedgood first issue

Issues

368 open indexed issues

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Open
Jit x86: improve codegen for compares with long statics
arch-x86area-CodeGen-coreclrenhancementhelp wantedoptimizationtenet-performance

dotnet/runtime #8,555 opened Jul 14, 2017 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available
2 comments0 reactions0 assignees
Open
System.Reflection Performance Tests
area-System.Reflectionhelp wantedtenet-performancetest-enhancement

dotnet/runtime #21,268 opened Apr 21, 2017 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available
2 comments0 reactions0 assignees
Open
JIT throughput: SimplerHashTable
JitThroughputarea-CodeGen-coreclrenhancementhelp wantedtenet-performance

dotnet/runtime #7,710 opened Mar 23, 2017 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available
5 comments1 reaction0 assignees
Open
Support TypeConverterAttribute on bound properties
area-Extensions-Configurationfeature-requesthelp wanted

dotnet/runtime #36,545 opened Mar 18, 2017 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available
10 comments17 reactions0 assignees
Open
RyuJIT/x86: REGMASK_BITS should be 16 for x86, not 32
HackathonJitThroughputarch-x86area-CodeGen-coreclrenhancementgood first issuetenet-performance

dotnet/runtime #7,575 opened Mar 8, 2017 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available
10 comments0 reactions0 assignees
Open
SerialPort timeout tests are slow and flaky
area-System.IO.Portsdisabled-testhelp wantedtest-bug

dotnet/runtime #20,149 opened Feb 8, 2017 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available
15 comments0 reactions0 assignees
Open
Add relevant CHA inside Roslyn and RyuJIT
area-CodeGen-coreclrhelp wanted

dotnet/runtime #7,183 opened Jan 2, 2017 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available
8 comments1 reaction0 assignees
Open
Test Linq.Expression interpreted mode in CI
area-System.Linq.Expressionshelp wantedtest-bug

dotnet/runtime #18,802 opened Sep 30, 2016 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available
3 comments0 reactions0 assignees
Open
Perf Test Coverage: Port Xamarin benchmarks to xunit
Hackathonarea-CodeGen-coreclrenhancementgood first issuehelp wantedtenet-performance

dotnet/runtime #6,610 opened Sep 7, 2016 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available
2 comments0 reactions0 assignees
Open
Port xsd.exe to .NET Core
area-Serializationenhancementhelp wantedwishlist

dotnet/runtime #1,391 opened May 18, 2016 · C# · 17,886 stars

Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available
46 comments79 reactions0 assignees