Search results

Caching compiler regresses msbuild's up-to-date checks

Area-Compilers

Feature - Caching Compiler

Status: Open.

Bug

#83801 In dotnet/roslyn;

· jjonescz opened on May 20, 2026

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18.8

Source-generator child nodes missing in Solution Explorer when analyzer DLL lives under the project directory

Area-IDE

Status: Open.

#83782 In dotnet/roslyn;

· sailro opened on May 19, 2026

Flag Enum Warning Enum.HasFlag(Enum) for Zero

Area-IDE

Feature Request

Status: Open.

#83779 In dotnet/roslyn;

· NPK111 opened on May 19, 2026

[Known Build Error] Razor AddImport code action not found in CodeAction tests

Area-Infrastructure

Known Build Error

Status: Open.

#83775 In dotnet/roslyn;

· jaredpar opened on May 19, 2026

[Known Build Error] Pool leak detected

Area-Infrastructure

Known Build Error

Status: Open.

Bug

#83749 In dotnet/roslyn;

· jjonescz opened on May 18, 2026

·  

18.8

Proposal: add assembly-scoped types/files for assembly-only visibility

Area-Language Design

Status: Open.

Feature

#83787 In dotnet/roslyn;

· kieronlanning opened on May 17, 2026

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Backlog

Finalize new public API shape for closed classes and remove experimental marker

Area-Compilers

Feature - Closed Class Hierarchies

Status: Open.

Task

#83717 In dotnet/roslyn;

· RikkiGibson opened on May 15, 2026

·  

.NET 11

Tons of exception messages appear when using the new extension syntax

Area-IDE

Status: Open.

#83697 In dotnet/roslyn;

· Neme12 opened on May 14, 2026

[LSP] Microsoft.CodeAnalysis.LanguageServer shows high CPU usage when performing switch on a union in C# 15.

Feature - Unions

Status: Open.

#83687 In dotnet/roslyn;

· nuskey8 opened on May 14, 2026

New public API for Closed Class Hierarchies feature

api-ready-for-reviewAPI is ready for review, it is NOT ready for implementationAPI is ready for review, it is NOT ready for implementation

Area-Compilers

Concept-APIThis issue involves adding, removing, clarification, or modification of an API.This issue involves adding, removing, clarification, or modification of an API.

Feature - Closed Class Hierarchies

Feature Request

Status: Open.

Feature

#83678 In dotnet/roslyn;

· RikkiGibson opened on May 13, 2026

·  

18.8

Script compiles with Microsoft.CodeAnalysis.CSharp.Scripting ok, but then fails with Microsoft.CSharp.RuntimeBinder.RuntimeBinderException on run

Area-Interactive

Status: Open.

#83671 In dotnet/roslyn;

· jpmcx opened on May 13, 2026

compilation error for multiple top-level statements

Area-Compilers

Concept-Diagnostic ClarityThe issues deals with the ease of understanding of errors and warnings.The issues deals with the ease of understanding of errors and warnings.

Feature - Simple ProgramsTop-level statementsTop-level statements

help wantedThe issue is "up for grabs" - add a comment if you are interested in working on itThe issue is "up for grabs" - add a comment if you are interested in working on it

Status: Open.

#83691 In dotnet/roslyn;

· msinghm104 opened on May 12, 2026

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Backlog