Issues

• Optional sandbox review of a fork PR compiler fix

  caffeinelabs/motoko#6491 · Filter by author Doumy666 opened on Nov 5, 2026

• Late await of a successfully completed future can run catch with a misleading #call_error

  caffeinelabs/motoko#6472 · Filter by author timohanke opened on Oct 21, 2026
  2

• switch on a tuple allocates the tuple; let (a, b) = … doesn't

  caffeinelabs/motoko#6462 · Filter by author timohanke opened on Oct 19, 2026
  2

• Canonical encoding for hashing and signing

  caffeinelabs/motoko#6437 · Filter by author infu opened on Oct 5, 2026

• Type pattern fields crash moc when captured before their binding is checked

  Buglanguage designtyping
  caffeinelabs/motoko#6435 · Filter by author Kamirus opened on Oct 5, 2026

• RFC: Target syntax for Motoko v3 — the brace discipline (north star)

  caffeinelabs/motoko#6352 · Filter by author Kamirus opened on Sep 9, 2026
  2

• RFC: Retiring the currying illusion (moc v3)

  caffeinelabs/motoko#6349 · Filter by author Kamirus opened on Sep 8, 2026

• from_candid: "byte read out of buffer" trap when skipping many record fields (to_candid round-trip)

  caffeinelabs/motoko#6331 · Filter by author ggreif opened on Aug 28, 2026

• Missing overflow check in StableMemory.grow: an attacker-supplied Nat of the form 2^64 - size + K passes the max-pages guard and silently shrinks the logical stable memory (canister brick)

  caffeinelabs/motoko#6307 · Filter by author haoxucu opened on Aug 16, 2026

• Arbitrary local file read embedded into compiled Wasm via blob:file: imports or relative .. imports (no containment)

  caffeinelabs/motoko#6306 · Filter by author haoxucu opened on Aug 16, 2026

• Quadratic time in type checking of unbracketed sum chains (re-inference of the whole left subtree per operator), reaching ~15 s for 32k operands and crashing the JS build at ~5k operands

  caffeinelabs/motoko#6304 · Filter by author haoxucu opened on Aug 16, 2026

• Quadratic time blowup in Candid .did type checking (Map.union fold over type declarations) enables DoS of compile services with a ~1 MB file

  caffeinelabs/motoko#6303 · Filter by author haoxucu opened on Aug 16, 2026

• Stored XSS in mo-doc generated HTML: doc comments are rendered as raw Markdown with no HTML escaping and no URL-scheme filtering (javascript:)

  caffeinelabs/motoko#6302 · Filter by author haoxucu opened on Aug 16, 2026

• Text case conversion differs between moc -r and compiled code

  caffeinelabs/motoko#6284 · Filter by author jubnzv opened on Aug 7, 2026

• Float formatting differs between moc -r and compiled code

  caffeinelabs/motoko#6283 · Filter by author jubnzv opened on Aug 7, 2026

• Serve the canister usage skill as a service:skill metadata section

  caffeinelabs/motoko#6258 · Filter by author ggreif opened on Jul 24, 2026

• Absorb coverage into test-runner (retire the standalone coverage: Makefile target)

  caffeinelabs/motoko#6221 · Filter by author ggreif opened on Jun 29, 2026

• Warn on Float64 literals with excess decimal precision (M0264 analog)

  caffeinelabs/motoko#6203 · Filter by author ggreif opened on Jun 19, 2026
  

• Re-enable M0223 in nightly-macos-test once motoko-core drops redundant type instantiations

  caffeinelabs/motoko#6199 · Filter by author ggreif opened on Jun 18, 2026
  

• Allow label with fallthrough default value

  Feature

  caffeinelabs/motoko#6163 · Filter by author ggreif opened on Jun 1, 2026
  1

  

• codegen: narrow variant-hash / tag / state-machine compares from i64 to i32 (EOP)

  caffeinelabs/motoko#6124 · Filter by author ggreif opened on May 15, 2026

• enhancement: report dropped fields in enhance-migration (if necessary)

  caffeinelabs/motoko#5995 · Filter by author crusso opened on Apr 9, 2026
  

• doc: the new "improved" doc on icp features is full of broken examples and needs vetting

  caffeinelabs/motoko#5994 · Filter by author crusso opened on Apr 9, 2026

• mo-doc: HTML output of field docs needs work

  documentationtools
  caffeinelabs/motoko#5990 · Filter by author christoph-dfinity opened on Apr 9, 2026

• perf: compound assignments does redundant work

  caffeinelabs/motoko#5972 · Filter by author crusso opened on Apr 2, 2026
  2