Issues

• [vm] Failing as FutureOr<T> on a Smi crashes with SIGSEGV instead of throwing TypeError (JIT and AOT)

  area-vm
  dart-lang/sdk#64620 · Filter by author penne-0505 opened on Oct 16, 2026

• Failures on [analysis_server] Drop interpolation braces in RemoveThisAlias....[vm,dyn_modules] Fix stack traces with interpreted implicit closures.

  area-vmgardening
  dart-lang/sdk#64603 · Filter by author alexmarkov opened on Oct 15, 2026
  1

• [gardening] standalone/map_insert_remove_oom_test OOMs now after GC changes

  area-vmgardening
  dart-lang/sdk#64587 · Filter by author mkustermann opened on Oct 14, 2026

• [gardening] standalone/file_system_watcher_isolate_exit_leak_test failing after GC related changes

  area-vmgardening
  dart-lang/sdk#64586 · Filter by author mkustermann opened on Oct 14, 2026
  

• [AOT] Stack Overflow during compilation

  area-vm
  dart-lang/sdk#64573 · Filter by author modulovalue opened on Oct 13, 2026
  1

• Zone is unsendable (@vmIsolateUnsendable) but Zone.root is sendable, and neither is documented in SendPort.send / Zone docs

  area-vm
  dart-lang/sdk#64568 · Filter by author gmpassos opened on Oct 13, 2026
  1

• Windows: local DateTime offset ignores the system time zone when TZ is set

  area-vm
  dart-lang/sdk#64559 · Filter by author edde746 opened on Oct 11, 2026

• Allow macos gen_snapshot to avoid writing output file path to symbol table

  area-vm
  dart-lang/sdk#64547 · Filter by author aran opened on Oct 9, 2026
  1

• dart:io on Windows treats every reparse point as a link instead of checking IsReparseTagNameSurrogate

  area-vmlibrary-ioos-windowstype-bug
  dart-lang/sdk#64535 · Filter by author sigurdm opened on Oct 8, 2026

• Failures on [typed_data] Implement IEEE min/max for Float32x4/Float64x2 and add an exhaustive test

  area-vmgardeningtriaged
  dart-lang/sdk#64521 · Filter by author rmacnak-google opened on Oct 7, 2026
  4

  

• Dart_PostCObject doesn't communicate why it fails

  area-vm
  dart-lang/sdk#64488 · Filter by author gaaclarke opened on Oct 5, 2026
  2

• co19/TypeSystem/inference/function_literal_inference_A01_t05 now RTE instead of Crash on vm-modaot-mac-debug-arm64

  area-vmgardeningtriaged
  dart-lang/sdk#64485 · Filter by author sstrickl opened on Oct 5, 2026
  

• [vm] inefficiencies found while building simdjson in SWAR.

  area-vmtriaged
  dart-lang/sdk#64477 · Filter by author modulovalue opened on Oct 4, 2026
  

• standalone/io/pipe_server_test/0 flaky -> RuntimeError on vm-ubsan-android-release-x64c

  area-vmgardeningP3triaged
  dart-lang/sdk#64448 · Filter by author alexmarkov opened on Oct 1, 2026
  1

• dart:io HttpServer adds a default Content-Type: text/plain to 304 and 204 responses

  area-vmlibrary-io
  dart-lang/sdk#64442 · Filter by author gmpassos opened on Oct 1, 2026

• Unbox SIMD parameters and return values (Float32x4, Float64x2, Int32x4) in AOT

  area-vmP3triagedtype-performance
  dart-lang/sdk#64435 · Filter by author alexmarkov opened on Sep 30, 2026

• standalone/io/process_no_inherit_handle_test Flaky -> RTE on vm-win-debug-arm64

  area-vmgardeningtriaged
  Bug

  dart-lang/sdk#64433 · Filter by author sstrickl opened on Sep 30, 2026
  1

  

• AllocateNew takes a GC safepoint even when it skips the scavenge, so all isolates crawl for seconds (since 3.9)

  area-vmtriagedtype-performancevm-gc
  dart-lang/sdk#64419 · Filter by author bb-kalshi opened on Sep 28, 2026
  1

• [cfg] Representation of debug info in CFG IR

  area-vmtriaged
  dart-lang/sdk#64413 · Filter by author mkustermann opened on Sep 28, 2026
  4

• VM AOT does not recognize 32-bit rotate, so SHA-256 runs 1.7x faster under dart2js than native

  area-vmP3triagedtype-enhancement
  dart-lang/sdk#64389 · Filter by author krll-kov opened on Sep 25, 2026
  10

• [vm/ffi] preserve generated native wrapper bodies when .address is passed to leaf calls

  area-vmlibrary-ffi
  Unread
  dart-lang/sdk#64369·nmfisher opened Sep 24, 2026 · Updated Sep 29, 2026·Draft
  2

• [vm] Review parameter unboxing.

  area-vmtriaged
  dart-lang/sdk#64348 · Filter by author modulovalue opened on Sep 22, 2026
  1

• [vm/aot] IsSmallLeafOrReduction could be cached

  area-vmP3triagedtype-performance
  dart-lang/sdk#64336 · Filter by author sigurdm opened on Sep 21, 2026
  4

• vm/dart/stream_timeline_to_test/1 flaky -> RuntimeError

  area-vmgardeningtriaged
  dart-lang/sdk#64315 · Filter by author alexmarkov opened on Sep 17, 2026

• [dds] Replace --google3-workspace-root with multi-root filesystem options

  area-vmP3pkg-ddstriaged
  dart-lang/sdk#64292 · Filter by author bkonyi opened on Sep 15, 2026