Issues

• Migrate MLIR asm format to strict properties

  mlir-upstreamtaskTeam: Mojo Compiler
  modular/modular#7230 · Filter by author zyx-billy opened on Oct 2, 2026
  

• [BUG] Compiler segfault: TestSuite.discover_tests[__functions_in_module()] with a function taking a StaticString-parameterized struct

  bugcompiler: midendmojo: comptimemojo: paramsmojorepro: confirmedsymptom: crashTeam: Mojo Compiler
  modular/modular#7229 · Filter by author qambrus opened on Oct 2, 2026
  2

• [Feature Request] Add the socket platform layer for Linux and macOS

  acceptedbug_feature_triagedenhancementmojoTeam: Mojo Libraries
  modular/modular#7227 · Filter by author NathanSWard opened on Oct 1, 2026

• [Feature Request] Add raw socket syscall bindings to std.net._sys

  acceptedbug_feature_triagedenhancementmojoTeam: Mojo Libraries
  modular/modular#7226 · Filter by author NathanSWard opened on Oct 1, 2026

• [Feature Request] [Testing] Check the std.net._sys mirrors against the real C headers

  acceptedbug_feature_triagedenhancementmojoTeam: Mojo Libraries
  modular/modular#7225 · Filter by author NathanSWard opened on Oct 1, 2026

• [Feature Request] Add macOS socket ABI mirrors to std.net._sys

  acceptedbug_feature_triagedenhancementmojoTeam: Mojo Libraries
  modular/modular#7224 · Filter by author NathanSWard opened on Oct 1, 2026

• [Feature Request] Add Linux socket ABI mirrors to std.net._sys

  acceptedbug_feature_triagedenhancementmojoTeam: Mojo Libraries
  modular/modular#7223 · Filter by author NathanSWard opened on Oct 1, 2026

• [Feature Request] Add std.net: blocking TCP sockets in the stdlib

  acceptedbug_feature_triagedenhancementmojoTeam: Mojo Libraries
  modular/modular#7222 · Filter by author NathanSWard opened on Oct 1, 2026
  

• [mblack] Update match/case formatting to match Python

  bug_feature_triaged
  modular/modular#7221 · Filter by author arthurevans opened on Oct 1, 2026
  

• [BUG] Mojo produces wrong warnings when file content changes

  bugmojo
  modular/modular#7220 · Filter by author stackmystack opened on Oct 1, 2026

• [BUG] mojo precompile asserts when a stdlib struct's extension conforms to a trait defined in a sibling file

  modular/modular#7219 · Filter by author frasercrmck opened on Oct 1, 2026

• Replace state numbering with liveness at suspension points

  modular/modular#7217 · Filter by author stumpOS opened on Oct 1, 2026
  

• Remove "dummy" TargetAccelerator.current_accelerator() value used when --target-accelerator is ""

  modular/modular#7216 · Filter by author ConnorGray opened on Oct 1, 2026
  

• [BUG] pop.aligned_alloc is much slower than malloc external call

  bugmojoperformance
  modular/modular#7215 · Filter by author bgreni opened on Sep 30, 2026
  4

• StringSpan(string) does not properly capture the string's interior origin

  acceptedbugTeam: Mojo Libraries
  modular/modular#7214 · Filter by author linear opened on Sep 30, 2026
  2

• Span(list) should propagate the list's interior origin.

  acceptedbugTeam: Mojo Libraries
  modular/modular#7213 · Filter by author linear opened on Sep 30, 2026
  1

• Backend Compiler Work

  modular/modular#7212 · Filter by author linear opened on Sep 30, 2026

• Mojo Async

  asyncmojo: async
  modular/modular#7211 · Filter by author linear opened on Sep 30, 2026
  

• [Docs] Unclear licensing specification for the entire repo and unclear MAX exception

  bug_feature_triageddocumentation
  modular/modular#7210 · Filter by author mbrukman opened on Sep 29, 2026
  1

• [Feature Request] Add a way to specify the error type of a try/except

  compiler: frontendenhancementmojo: try/exceptmojoneeds: discussionTeam: Mojo Compiler
  modular/modular#7206 · Filter by author owenhilyard opened on Sep 28, 2026
  4

• [BUG] stdlib: StringSlice != "literal" doesn't compile, though == does

  acceptedbug_feature_triagedbugmojoTeam: Mojo Libraries
  modular/modular#7205 · Filter by author xvbcfj opened on Sep 28, 2026
  2

  

• [BUG] leading-dot call in argument position only accepts compile-time arguments

  bugcompiler: frontendmojo: comptimemojo: paramsmojoparameter-inferencerepro: confirmedsymptom: bad-diagnosticsymptom: rejects-validTeam: Mojo Compiler
  modular/modular#7204 · Filter by author xvbcfj opened on Sep 28, 2026
  1

  

• [BUG] use of uninitialized value '(expression temporary)'

  bugcompiler: frontendmojo: pattern-matchingmojoneeds: planrepro: confirmedsymptom: bad-diagnosticsymptom: rejects-validTeam: Mojo Compiler
  modular/modular#7203 · Filter by author xvbcfj opened on Sep 28, 2026
  

• [BUG] Derived Equatable fails in codegen when ArcPointer[Self] sits inside a Tuple

  acceptedbugcompiler: midendmojo: variadicsmojorepro: confirmedsymptom: internal-errorsymptom: rejects-validTeam: Mojo Compiler
  modular/modular#7202 · Filter by author xvbcfj opened on Sep 28, 2026
  2

  

• [BUG] Compiler crash

  bugcompiler: frontendmojo: paramsmojo: try/exceptmojorepro: confirmedsymptom: crashTeam: Mojo Compiler
  modular/modular#7200 · Filter by author xvbcfj opened on Sep 28, 2026