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Inline CORINFO_HELP_ARRADDR_ST helper call, remove WriteBarrier FCall

area-VM-coreclr

Status: Merged (completed).

dotnet/runtimenumber 117583

#117583 In dotnet/runtime;

· by EgorBo was closed on Apr 2, 2026

Replace MethodDescCallSite with UnmanagedCallersOnly in clrex.cpp

area-ExceptionHandling-coreclr

Status: Merged (completed).

dotnet/runtimenumber 126061

#126061 In dotnet/runtime;

· by AaronRobinsonMSFT was closed on Mar 28, 2026

Fix WebWorker hang when debugging Blazor WASM apps in Visual Studio

area-Debugger-mono

Status: Merged (completed).

dotnet/runtimenumber 125617

#125617 In dotnet/runtime;

· by ilonatommy was closed on Mar 19, 2026

Add camelCase option to the JSON console log formatter

api-suggestionEarly API idea and discussion, it is NOT ready for implementationEarly API idea and discussion, it is NOT ready for implementation

area-Extensions-Logging

Status: Closed (completed).

#109726 In dotnet/runtime;

· by esbenbjerre was closed on Mar 19, 2026

Test Failure: System.Net.Http.WinHttpHandler.Functional.Tests

area-CodeGen-coreclrCLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMICLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMI

blocking-clean-ci-optionalBlocking optional rolling runsBlocking optional rolling runs

Status: Closed (completed).

#125255 In dotnet/runtime;

· by JulieLeeMSFT was closed on Mar 17, 2026

Bug with Tiered Compilation optimizations on .NET 10

area-CodeGen-coreclrCLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMICLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMI

bug

Status: Closed (completed).

#125301 In dotnet/runtime;

· by lightmg was closed on Mar 23, 2026

[NativeAOT] Test_GetTotalAllocatedBytes test fails with OutOfMemoryException

arch-arm32

area-NativeAOT-coreclr

blocking-clean-ciBlocking PR or rolling runs of 'runtime' or 'runtime-extra-platforms'Blocking PR or rolling runs of 'runtime' or 'runtime-extra-platforms'

Known Build ErrorUse this to report build issues in the .NET Helix tabUse this to report build issues in the .NET Helix tab

os-linuxLinux OS (any supported distro)Linux OS (any supported distro)

Status: Duplicate of an existing item.

#119187 In dotnet/runtime;

· by jkotas was closed on Feb 19, 2026

· Duplicate

Circular reference results in deadlock

area-Extensions-DependencyInjection

bug

help wanted[up-for-grabs] Good issue for external contributors[up-for-grabs] Good issue for external contributors

Status: Closed (completed).

#36458 In dotnet/runtime;

· by davidfowl was closed on Mar 5, 2026

Could not load content for githubusercontent

arch-wasmWebAssembly architectureWebAssembly architecture

area-VM-meta-mono

Status: Closed (completed).

#121804 In dotnet/runtime;

· by Vizual-Dev was closed on Feb 11, 2026

Test failure: System.IO.Tests.FileInfo_SymbolicLinks.ResolveLinkTarget_Succeeds

area-System.IO

blocking-clean-ciBlocking PR or rolling runs of 'runtime' or 'runtime-extra-platforms'Blocking PR or rolling runs of 'runtime' or 'runtime-extra-platforms'

Known Build ErrorUse this to report build issues in the .NET Helix tabUse this to report build issues in the .NET Helix tab

Status: Closed (completed).

#120380 In dotnet/runtime;

· by vcsjones was closed on Mar 11, 2026

Test Failure: JIT/Methodical/tailcall_v4/hijacking/hijacking.dll & JIT/opt/Tailcall/TailcallVerifyWithPrefix/TailcallVerifyWithPrefix.dll

area-CodeGen-coreclrCLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMICLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMI

blocking-clean-ci-optionalBlocking optional rolling runsBlocking optional rolling runs

Status: Closed (completed).

#123867 In dotnet/runtime;

· by shimingsg was closed on Feb 6, 2026

Simplify CultureInfo.CreateSpecificCulture with IndexOf

area-System.Globalization

Status: Merged (completed).

dotnet/runtimenumber 123887

#123887 In dotnet/runtime;

· by stephentoub was closed on Feb 3, 2026

Fix HFA tests with interpreter

area-CodeGen-Interpreter-coreclr

Status: Merged (completed).

dotnet/runtimenumber 123818

#123818 In dotnet/runtime;

· by janvorli was closed on Feb 2, 2026

[browser][coreCLR] Unable to load shared library libSystem.Runtime.InteropServices.JavaScript.Native

arch-wasmWebAssembly architectureWebAssembly architecture

area-System.Runtime.InteropServices.JavaScript

Known Build ErrorUse this to report build issues in the .NET Helix tabUse this to report build issues in the .NET Helix tab

os-browserBrowser variant of arch-wasmBrowser variant of arch-wasm

Status: Closed (completed).

#123421 In dotnet/runtime;

· by pavelsavara was closed on Jan 26, 2026

Base64{Url} incorrectly handles small destinations when inputs contain whitespace

area-System.Memory

bug

Status: Closed (completed).

#123222 In dotnet/runtime;

· by MihaZupan was closed on Jan 20, 2026

Unexpected NullReferenceException (potentially escaped stack allocation)

area-CodeGen-coreclrCLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMICLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMI

Status: Closed (completed).

#122879 In dotnet/runtime;

· by emmisberger was closed on Feb 12, 2026

Implement ZStandard Stream, Encoder, Decoder

area-System.IO.Compression

Status: Merged (completed).

dotnet/runtimenumber 119575

#119575 In dotnet/runtime;

· by rzikm was closed on Jan 22, 2026

JIT Bug: Code Generation Error under inlining (Release only)

area-CodeGen-coreclrCLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMICLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMI

Status: Closed (completed).

#122138 In dotnet/runtime;

· by LadislavLang was closed on Jan 16, 2026

JIT: No need to flow ExecutionContext around unoptimized AsyncHelpers.Await calls

area-CodeGen-coreclrCLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMICLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMI

runtime-async

Status: Closed (completed).

#117312 In dotnet/runtime;

· by jakobbotsch was closed on Mar 24, 2026

[Profiler] Ability to avoid ICorProfilerCallback::ObjectsAllocatedByClass callback when COR_PRF_MONITOR_GC is set.

area-Diagnostics-coreclr

enhancementProduct code improvement that does NOT require public API changes/additionsProduct code improvement that does NOT require public API changes/additions

tenet-performancePerformance related issuePerformance related issue

Status: Closed (completed).

#108230 In dotnet/runtime;

· by ww898 was closed on Jan 20, 2026

[cDAC] Support APIs for reading line numbers

area-Diagnostics-coreclr

enhancementProduct code improvement that does NOT require public API changes/additionsProduct code improvement that does NOT require public API changes/additions

Status: Closed (completed).

#114336 In dotnet/runtime;

· by max-charlamb was closed on Mar 12, 2026

[DAC][ReJIT] ReJitManager::IsReJITEnabled checked DOTNET_ProfAPI_RejitOnAttach in the wrong environment

area-Diagnostics-coreclr

Status: Closed (completed).

#106148 In dotnet/runtime;

· by lambdageek was closed on Mar 14, 2026

API documentation debt - Microsoft.Extensions.FileProvider

area-Extensions-FileSystem

documentationDocumentation bug or enhancement, does not impact product or test codeDocumentation bug or enhancement, does not impact product or test code

help wanted[up-for-grabs] Good issue for external contributors[up-for-grabs] Good issue for external contributors

in-prThere is an active PR which will close this issue when it is mergedThere is an active PR which will close this issue when it is merged

Status: Closed (completed).

#43900 In dotnet/runtime;

· by carlossanlop was closed on Mar 17, 2026

support file block copy on write on Windows

area-System.IO

tenet-performancePerformance related issuePerformance related issue

Status: Closed (completed).

#86681 In dotnet/runtime;

· by danmoseley was closed on Mar 18, 2026

CoreCLR Interpreter

area-CodeGen-Interpreter-coreclr

Status: Closed (completed).

#112158 In dotnet/runtime;

· by BrzVlad was closed on Mar 3, 2026