Issues

• Try to resolve exact targets for constrained static interface calls

  area-CodeGen-coreclrtenet-performanceuntriaged
  dotnet/runtime#135168 · Filter by author NinoFloris opened on Oct 3, 2026
  1

• JIT: Atomic Address Containment

  area-CodeGen-coreclrperformanceuntriaged
  dotnet/runtime#135166 · Filter by author AndyAyersMS opened on Oct 3, 2026
  1

• JIT: Compare 128 To 127

  area-CodeGen-coreclrperformanceuntriaged
  dotnet/runtime#135165 · Filter by author AndyAyersMS opened on Oct 3, 2026
  1

• [ci-scan-feedback] Dedup crashing-compile build breaks on compiled-asset path

  agentic-workflowsuntriaged
  dotnet/runtime#135164 · Filter by author github-actions opened on Oct 3, 2026

• [aw] CI Outer-Loop Failure Scanner is missing required tool

  agentic-workflowsuntriaged
  dotnet/runtime#135163 · Filter by author github-actions opened on Oct 3, 2026

• [aw] CI Outer-Loop Failure Fixer reported incomplete result

  agentic-workflowsuntriaged
  dotnet/runtime#135162 · Filter by author github-actions opened on Oct 3, 2026

• Add analyzer to detect runtime InvalidOperationException from LINQ operations that require comparable keys

  area-System.Runtimeuntriaged
  dotnet/runtime#135161 · Filter by author Advitalitum opened on Oct 3, 2026
  2

• [ci-scan] Test failure: AppHost.Bundle.Tests.BundledAppWithSubDirs reuses a stale extraction on macOS Helix

  area-Hostblocking-clean-ciKnown Build Erroruntriaged
  dotnet/runtime#135155 · Filter by author lewing opened on Oct 3, 2026

• cDAC: a cyclic Frame chain makes IStackWalk.CreateStackWalk loop forever

  area-Diagnostics-cdacuntriaged
  dotnet/runtime#135154 · Filter by author lewing opened on Oct 3, 2026
  1

• Debugger Hot Reload with a profiler loaded: CanSetEnCBits refuses it, DOTNET_MODIFIABLE_ASSEMBLIES=debug allows it. Is that the supported route?

  area-Diagnostics-coreclruntriaged
  dotnet/runtime#135152 · Filter by author pcshrosbree opened on Oct 3, 2026
  1

• Linux/macOS: the debugging services reap a launched debuggee with waitpid and drop its exit status, so debuggers report "exited with code 0" for a crash (re-raising #43731)

  area-Diagnostics-coreclruntriaged
  dotnet/runtime#135151 · Filter by author pcshrosbree opened on Oct 3, 2026
  1

• [aw] CI Outer-Loop Failure Scanner failed

  agentic-workflowsuntriaged
  dotnet/runtime#135150 · Filter by author github-actions opened on Oct 3, 2026

• [ci-scan] Test failure: Interop/COM/NativeClients/Dispatch/Dispatch.cmd exits 0xC0000409

  area-Interop-coreclrblocking-clean-ciKnown Build Erroruntriaged
  dotnet/runtime#135149 · Filter by author agocke opened on Oct 3, 2026
  1

• [ci-scan] Test failure: SslStreamTlsResumeTests.ClientCert_DefaultValue_ResumeSucceeds on Linux ARM64 Mono

  area-System.Net.Securityblocking-clean-ciKnown Build Error
  dotnet/runtime#135148 · Filter by author agocke opened on Oct 3, 2026 · Future
  1

• cDAC WASM: leaf frame pointer is not funclet-aware when a walk starts inside a funclet

  arch-wasmarea-Diagnostics-cdac
  dotnet/runtime#135147 · Filter by author lewing opened on Oct 3, 2026 · 12.0.0
  2

• [Wasm][JIT] Optimize small fixed-size memory.copy

  arch-wasmarea-CodeGen-coreclruntriaged
  dotnet/runtime#135145 · Filter by author jtschuster opened on Oct 3, 2026
  2

• [Wasm][JIT] Optimize small fixed-size memory.fill

  arch-wasmarea-CodeGen-coreclruntriaged
  dotnet/runtime#135143 · Filter by author jtschuster opened on Oct 2, 2026
  2

• [wasm][r2r] Consider allowing different values as the function identifier in the per stack frame structure we build in Wasm

  area-CodeGen-coreclruntriaged
  dotnet/runtime#135141 · Filter by author davidwrighton opened on Oct 2, 2026
  2

  

• [wasm][r2r] Jit generates code with very large numbers of wasm locals

  arch-wasmarea-CodeGen-coreclr
  dotnet/runtime#135139 · Filter by author davidwrighton opened on Oct 2, 2026 · 12.0.0
  3

  

• [cDAC][wasm] Stack walk drops R2R callers of an InterpreterFrame entered via a portable-entry-point thunk (TransitionBlock m_StackPointer / lazy virtual IP not honored)

  arch-wasmarea-Diagnostics-cdac
  dotnet/runtime#135137 · Filter by author lewing opened on Oct 2, 2026 · 12.0.0
  2

  

• [wasm][R2R] Create a list of all QCalls and PInvokes to CoreLib that the managed app uses to reduce linked runtime size

  arch-wasmarea-ReadyToRun
  dotnet/runtime#135133 · Filter by author jtschuster opened on Oct 2, 2026 · 12.0.0
  3

• [wasm][R2R] Investigate R2R images for duplicated fixups

  arch-wasmarea-ReadyToRun
  dotnet/runtime#135131 · Filter by author jtschuster opened on Oct 2, 2026 · 12.0.0
  2

• [wasm][R2R] String table deduplication / sharing

  arch-wasmarea-ReadyToRun
  dotnet/runtime#135129 · Filter by author jtschuster opened on Oct 2, 2026 · 12.0.0
  2

• TarFile.ExtractToDirectory may be Significantly Slower than Windows tar.exe

  area-System.Formats.Tartenet-performanceuntriaged
  dotnet/runtime#135128 · Filter by author nagilson opened on Oct 2, 2026
  1

• Debugger side unlinks the target's clr-debug-pipe FIFOs after a failed connect attempt (regression from #123196)

  area-Diagnostics-coreclruntriaged
  dotnet/runtime#135119 · Filter by author pcshrosbree opened on Oct 2, 2026
  2