Issues

• U32 order, conversion and division laws: in Base, or a hub package?

  bendlang/bend#1850 · Filter by author ajbarryiii opened on Oct 25, 2026

• Diagnostics: the two spellings of an effect (IO<Unit> vs IO(Unit)) both point the wrong way

  bendlang/bend#1848 · Filter by author adeerkhan opened on Oct 24, 2026
  1

• [Showcase & Feedback] AI Agent Governance & Capability Security in Bend 2.0.39 (8 Verified Theorems)

  bendlang/bend#1847 · Filter by author lbailey94 opened on Oct 24, 2026

• Base: "r+" in File.open, File.write_at, and 64-bit file offsets and sizes

  bendlang/bend#1843 · Filter by author ScottMoore0 opened on Oct 24, 2026
  1

• Security: BEND_LIB cache hits skip hash verification — pinned imports load unverified content

  bendlang/bend#1837 · Filter by author Viana-SSJ opened on Oct 23, 2026
  3

• Python target: a first pass, preliminary results, and the comp.ts cap

  bendlang/bend#1827 · Filter by author AFDudley opened on Oct 22, 2026

• Device lane spill: a loop at the exact fill depth spills and restores the whole stack on every call (~200x slower)

  bendlang/bend#1790 · Filter by author Lorenzobattistela opened on Oct 20, 2026

• A do-block bind or let without its type annotation reports an unrelated error

  bendlang/bend#1787 · Filter by author HamedShams opened on Oct 20, 2026

• IO.model: a pure interpreter for laws about a program’s observable IO behavior

  bendlang/bend#1784 · Filter by author viridale opened on Oct 20, 2026

• Calling a def written below its caller reports "an unfilled law is a dead claim", not the ordering rule

  bendlang/bend#1782 · Filter by author viridale opened on Oct 20, 2026

• A tiled matmul in Bend runs about 4x slower than the same kernel handwritten in CUDA: where the time goes

  bendlang/bend#1781 · Filter by author nuxyel opened on Oct 20, 2026
  1

• CUDA: the leaves of a balanced fork tree land on threads in an order that changes from run to run, so a layout cannot be coalesced

  bendlang/bend#1780 · Filter by author nuxyel opened on Oct 20, 2026

• The test and perf gates run ! on Metal only; CUDA-specific behaviour goes unnoticed

  bendlang/bend#1779 · Filter by author nuxyel opened on Oct 20, 2026

• CUDA: Array.new inside a bang fills the new block in one loop on one lane (~4.6 ns a cell)

  bendlang/bend#1778 · Filter by author nuxyel opened on Oct 20, 2026

• A safe way to give a fork tree's leaves disjoint parts of one Array to write (the counterpart of #1376)

  bendlang/bend#1777 · Filter by author nuxyel opened on Oct 19, 2026

• CUDA: the error poll in every flat loop (err_spun) makes ptxas yield on each iteration; tight loops run up to 20x slower

  bendlang/bend#1776 · Filter by author nuxyel opened on Oct 19, 2026
  1

• Buffered Chan receives scale quadratically on the Node host

  bendlang/bend#1720 · Filter by author oxura opened on Oct 18, 2026

• 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

• 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
  2

• Proposals for bend.ts: clearer messages for seven common mistakes

  bendlang/bend#1632 · Filter by author ScottMoore0 opened on Oct 17, 2026
  10

• 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
  1

• F32.from_nat wraps values at 2^32

  bendlang/bend#1609 · 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
  1

• 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