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[API Proposal]: ITuple.SetElement(int elementIndex, object elementValue)

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

area-System.Runtime

untriagedNew issue has not been triaged by the area ownerNew issue has not been triaged by the area owner

Status: Open.

#127132 In dotnet/runtime;

· GUZZ07 opened on Apr 20, 2026

Test failure: baseservices/exceptions/regressions/V1/SEH/VJ/HandlerException/HandlerException.cmd

area-ExceptionHandling-coreclr

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

JitStressCLR JIT issues involving JIT internal stress modesCLR JIT issues involving JIT internal stress modes

untriagedNew issue has not been triaged by the area ownerNew issue has not been triaged by the area owner

Status: Open.

#127131 In dotnet/runtime;

· VincentBu opened on Apr 20, 2026

Test failure: System.Threading.Tests.BarrierTests.RunBarrierTest7a

area-System.Threading

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

JitStressCLR JIT issues involving JIT internal stress modesCLR JIT issues involving JIT internal stress modes

untriagedNew issue has not been triaged by the area ownerNew issue has not been triaged by the area owner

Status: Open.

#127130 In dotnet/runtime;

· VincentBu opened on Apr 20, 2026

Test failure: System.Net.Quic.Tests.MsQuicPlatformDetectionTests.SupportedWindowsPlatforms_IsSupportedIsTrue

area-System.Net.Quic

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

untriagedNew issue has not been triaged by the area ownerNew issue has not been triaged by the area owner

Status: Open.

#127129 In dotnet/runtime;

· VincentBu opened on Apr 20, 2026

Test failure: JIT/jit64/regress/vsw/373472/test_il/test_il.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

GCStress

JitStressCLR JIT issues involving JIT internal stress modesCLR JIT issues involving JIT internal stress modes

untriagedNew issue has not been triaged by the area ownerNew issue has not been triaged by the area owner

Status: Open.

#127128 In dotnet/runtime;

· VincentBu opened on Apr 20, 2026

Test failure: System.Linq.Tests.SequenceTests.EndOutOfRange_Throws

area-System.Numerics.Tensors

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

JitStressCLR JIT issues involving JIT internal stress modesCLR JIT issues involving JIT internal stress modes

untriagedNew issue has not been triaged by the area ownerNew issue has not been triaged by the area owner

Status: Open.

#127127 In dotnet/runtime;

· VincentBu opened on Apr 20, 2026

Test failure: System.Linq.Tests.SequenceTests.EndOutOfRange_Throws

area-System.Linq

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

JitStressCLR JIT issues involving JIT internal stress modesCLR JIT issues involving JIT internal stress modes

untriagedNew issue has not been triaged by the area ownerNew issue has not been triaged by the area owner

Status: Open.

#127126 In dotnet/runtime;

· VincentBu opened on Apr 20, 2026

Test failure: System.Linq.Tests.SequenceTests.Numbers_ProduceExpectedSequence

area-System.Linq

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

JitStressCLR JIT issues involving JIT internal stress modesCLR JIT issues involving JIT internal stress modes

untriagedNew issue has not been triaged by the area ownerNew issue has not been triaged by the area owner

Status: Open.

#127125 In dotnet/runtime;

· VincentBu opened on Apr 20, 2026

Link.semaphore Not Created.

area-Host

untriagedNew issue has not been triaged by the area ownerNew issue has not been triaged by the area owner

Status: Open.

#127121 In dotnet/runtime;

· alaskanrogue opened on Apr 19, 2026

JIT: If-conversion costing rejects (cond ? 1 << a : 0) even on RISCV where this gets explicitly targeted

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

untriagedNew issue has not been triaged by the area ownerNew issue has not been triaged by the area owner

Status: Open.

#127110 In dotnet/runtime;

· BoyBaykiller opened on Apr 18, 2026

Flaky test failure in at StartAndForget_StartsProcessAndReturnsValidPid

area-System.Diagnostics.Process

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

untriagedNew issue has not been triaged by the area ownerNew issue has not been triaged by the area owner

Status: Open.

#127107 In dotnet/runtime;

· tannergooding opened on Apr 18, 2026

[API Proposal]: Mark MemoryMarshal APIs as caller-unsafe

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

area-System.Runtime.InteropServices

untriagedNew issue has not been triaged by the area ownerNew issue has not been triaged by the area owner

Status: Open.

#127098 In dotnet/runtime;

· EgorBo opened on Apr 17, 2026