Issues

• C backend: a memory-bound loop's speed depends on unrelated code (flipping BLK_SHR in a program that never forks makes it 10-18% faster)

  bendlang/bend#1648 · Filter by author nuxyel opened on Oct 17, 2026

• JS String.ends_with reverses the whole haystack even for a one-character or empty suffix

  bendlang/bend#1641 · Filter by author oxura opened on Oct 17, 2026

• Let an empty String prefix reduce without inspecting the haystack

  bendlang/bend#1640 · Filter by author oxura opened on Oct 17, 2026

• JS F32 bit casts allocate a fresh buffer and typed views on every call

  bendlang/bend#1638 · Filter by author oxura opened on Oct 17, 2026

• JS String.contains still scans ordinary text character by character

  bendlang/bend#1637 · Filter by author oxura opened on Oct 17, 2026

• F32.to_nat returns zero for representable Nats at and above 2^32

  bendlang/bend#1636 · Filter by author oxura opened on Oct 17, 2026

• fix(issues): bug form requests an unsupported version command

  bendlang/bend#1635 · Filter by author coygeek opened on Oct 17, 2026

• fix(js): invalid Nat inputs report a misleading 2^48-1 limit

  bendlang/bend#1634 · Filter by author coygeek opened on Oct 17, 2026

• Proposal for bend.ts: content-keyed template instance names, for parallel and cached checking

  bendlang/bend#1633 · Filter by author ScottMoore0 opened on Oct 17, 2026

• Proposals for bend.ts: clearer messages for seven common mistakes, and letting files shadow Base names

  bendlang/bend#1632 · Filter by author ScottMoore0 opened on Oct 17, 2026

• err_fail's _exit and stdio leave an embedder no fatal path (terminal state, signals)

  bendlang/bend#1624 · Filter by author rofrol opened on Oct 16, 2026

• --verdict rejects a reused proof after reconstructing a constructor with a function field

  bendlang/bend#1623 · Filter by author sebastian-griego opened on Oct 16, 2026

• JS String.length allocates an array proportional to the whole string

  bendlang/bend#1612 · Filter by author oxura opened on Oct 16, 2026

• F32.from_nat wraps values at 2^32

  bendlang/bend#1609 · Filter by author oxura opened on Oct 16, 2026

• F32.lerp overflows between finite endpoints and loses endpoint values

  bendlang/bend#1607 · Filter by author oxura opened on Oct 16, 2026

• Foreign effect ID scanning uses the wrong line-continuation rules

  bendlang/bend#1604 · Filter by author oxura opened on Oct 16, 2026

• wasm32/Emscripten CPU-only build mode for generated C?

  bendlang/bend#1598 · Filter by author rofrol opened on Oct 16, 2026

• Freestanding C builds: a BEND_HOST hook that replaces the runtime's OS host

  enhancement
  bendlang/bend#1594 · Filter by author GunnarZarncke opened on Oct 15, 2026

• IO request to evaluate a pure function off the IO loop thread

  bendlang/bend#1575 · Filter by author rofrol opened on Oct 15, 2026

• A file read into an Array<U32>, so loading model weights is not one list cell per byte

  enhancement
  bendlang/bend#1573 · Filter by author nuxyel opened on Oct 15, 2026
  2

• One + on a List<&2, U32> seals every List cell a native build makes, List<&1, U32> ones included: a loop that shares nothing runs 2x slower

  bendlang/bend#1559 · Filter by author aldeni opened on Oct 14, 2026

• safe: refute empty ~ columns in a specialized def's cover instead of leaving it out of scope

  enhancementlater
  bendlang/bend#1544 · Filter by author nicolas-abril opened on Oct 13, 2026

• IO.safe_eval and IO.unsafe_eval: check and run Bend source at runtime

  later
  bendlang/bend#1534 · Filter by author MattCozendey opened on Oct 12, 2026
  3

• -o fails when two versions of one hub package define the same C effect: redefinition of <effect>_run

  bendlang/bend#1533 · Filter by author paymog opened on Oct 12, 2026

• An imported forward dotted datatype is resolved as lib.lib:Type

  bendlang/bend#1514 · Filter by author jasisz opened on Oct 12, 2026
  4