List view

Missing check for Array.Length in Index/Range indexer on array

Area-Compilers

Bug

Concept-Design DebtEngineering Debt, Design Debt, or poor product code qualityEngineering Debt, Design Debt, or poor product code quality

Status: Open.

Bug

#82756 In dotnet/roslyn;

· jcouv opened on Mar 13, 2026

Unable to find documentation on some enum values like PointMemberAccessExpression

Area-Compilers

Documentation

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.

Bug

#82727 In dotnet/roslyn;

· vamuzumd opened on Aug 28, 2020

SourceText created in didOpen LSP handler needs encoding and checksum algorithm

Area-IDE

Concept-Continuous Improvement

LSPissues related to the roslyn language server protocol implementationissues related to the roslyn language server protocol implementation

Status: Open.

#63583 In dotnet/roslyn;

· tmat opened on Aug 24, 2022

Parenthesizing an expression duplicates diagnostics

Area-Compilers

Bug

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.

Status: Open.

#71303 In dotnet/roslyn;

· jjonescz opened on Dec 18, 2023

Unable to disable current statement highlightment in VS2017 for C#

Area-External

Developer CommunityThe issue was originally reported on https://developercommunity.visualstudio.comThe issue was originally reported on https://developercommunity.visualstudio.com

Feature Request

Interactive-Debugging

Status: Open.

#36621 In dotnet/roslyn;

· vsfeedback opened on Jun 20, 2019

Include Runtime information in S_COMPILE3

Area-Compilers

Bug

Status: Open.

#73183 In dotnet/roslyn;

· veronicasalgado opened on Apr 22, 2024

Add more incremental docs

Area-Compilers

Documentation

Status: Open.

#72149 In dotnet/roslyn;

· 333fred opened on Feb 16, 2024

Better optimizations around combining string concatenation and string interpolation

Area-Compilers

Bug

Code Gen QualityRoom for improvement in the quality of the compiler's generated codeRoom for improvement in the quality of the compiler's generated code

Status: Open.

#73736 In dotnet/roslyn;

· stephentoub opened on May 28, 2024

If class has primary constructor, cannot provide XML documentation comment for class

Area-Compilers

Feature - Primary Constructors

Status: Open.

#75272 In dotnet/roslyn;

· SetTrend opened on Sep 27, 2024

Include location for required member missing error

Area-Compilers

Bug

Status: Open.

#73596 In dotnet/roslyn;

· 333fred opened on May 20, 2024

Collection expression span optimization should reuse temps when possible

Area-Compilers

Bug

Code Gen QualityRoom for improvement in the quality of the compiler's generated codeRoom for improvement in the quality of the compiler's generated code

Feature - ParamsCollections

Status: Open.

#73269 In dotnet/roslyn;

· RikkiGibson opened on Apr 29, 2024

Remove MetadataHelpers.GenericParameterAttributesAllowByRefLike in favor of GenericParameterAttributes.AllowByRefLike

Area-Compilers

Bug

Feature - RefStructInterfaces`allows ref struct` (ref struct interfaces)`allows ref struct` (ref struct interfaces)

Status: Open.

#73548 In dotnet/roslyn;

· AlekseyTs opened on May 17, 2024

Check if ModuleCancellationInstrumenter gracefully handles ref kind differences between original and replacement methods

Status: Open.

#74393 In dotnet/roslyn;

· RikkiGibson opened on Jul 15, 2024

Unexpected nullability warning is reported for erroneous conditional assignment

Area-Compilers

Bug

Feature - Nullable Reference TypesNullable Reference TypesNullable Reference Types

Status: Open.

#72912 In dotnet/roslyn;

· AlekseyTs opened on Apr 6, 2024

Meaningless nullability warning is reported for deconstruction

Area-Compilers

Bug

Feature - Nullable Reference TypesNullable Reference TypesNullable Reference Types

Status: Open.

#72913 In dotnet/roslyn;

· AlekseyTs opened on Apr 7, 2024

Unexpected control flow graph verification failure for a erroneous nested collection initializer

Area-Compilers

Bug

Feature - IOperationIOperationIOperation

Status: Open.

#72931 In dotnet/roslyn;

· AlekseyTs opened on Apr 8, 2024

NullReferenceException in MethodSymbol.get_ParameterCount()

Area-Compilers

Bug

Status: Open.

#73022 In dotnet/roslyn;

· vsfeedback opened on Apr 15, 2024

Make MetadataDisplayFormat public

api-needs-workAPI needs work before it is approved, it is NOT ready for implementationAPI needs work before it is approved, 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 Request

Status: Open.

#72844 In dotnet/roslyn;

· tmat opened on Apr 2, 2024

Adjust CompoundUseSiteInfo<TAssemblySymbol>.MergeAndClear for discarding diagnostic bag

Area-Compilers

Bug

Status: Open.

#73188 In dotnet/roslyn;

· jcouv opened on Apr 23, 2024

Wrong boxing with IEquatable<T> ?

Area-Compilers

Status: Open.

#73310 In dotnet/roslyn;

· MillKaDe opened on May 2, 2024

Consider improving langversion diagnostics for "unsafe in iterators" feature

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 - Ref/Unsafe in Iterators/Async

Status: Open.

#73280 In dotnet/roslyn;

· jjonescz opened on Apr 30, 2024

Possibly unexpected behavior of nullable analysis around dynamic operators.

Area-Compilers

Bug

Feature - Nullable Reference TypesNullable Reference TypesNullable Reference Types

Status: Open.

#72906 In dotnet/roslyn;

· AlekseyTs opened on Apr 6, 2024

records with pattern: strange behavior

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.

Status: Open.

#72822 In dotnet/roslyn;

· kasperk81 opened on Mar 31, 2024

Unexpected conversion error for a deconstruction involving dynamic type

Area-Compilers

Bug

Feature - TuplesTuplesTuples

Status: Open.

#72914 In dotnet/roslyn;

· AlekseyTs opened on Apr 7, 2024

Generalize (CollectionBuilderType<T>)[..readOnlySpan] optimization to spread operands which are implicitly convertible to ReadOnlySpan<T>

Area-Compilers

Code Gen QualityRoom for improvement in the quality of the compiler's generated codeRoom for improvement in the quality of the compiler's generated code

Feature - Collection Expressions

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.

#73110 In dotnet/roslyn;

· RikkiGibson opened on Apr 19, 2024