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Failed CI build for refs/heads/release-36.0.0

Status: Open.

#13477 In bytecodealliance/wasmtime;

· github-actions opened on May 25, 2026

Cranelift 0.132 egraph stack-overflow on simple generic slice helper

Status: Open.

#13476 In bytecodealliance/wasmtime;

· hassard0 opened on May 25, 2026

Type registry debug assertion creating tags with Winch compiler

fuzz-bugBugs found by a fuzzerBugs found by a fuzzer

wasm-proposal:gcIssues with the implementation of the gc wasm proposalIssues with the implementation of the gc wasm proposal

Status: Open.

#13474 In bytecodealliance/wasmtime;

· alexcrichton opened on May 24, 2026

GC: grow-vs-collect heuristic (#12942) regresses allocation-heavy throughput ~2x — suggest reverting

wasm-proposal:gcIssues with the implementation of the gc wasm proposalIssues with the implementation of the gc wasm proposal

Status: Open.

#13470 In bytecodealliance/wasmtime;

· gfx opened on May 24, 2026

How to limit guest code execution rate?

Status: Open.

#13467 In bytecodealliance/wasmtime;

· matthew-a-thomas opened on May 23, 2026

Cranelift: GC reference reads back as null after a call safepoint (regression from #13228)

wasm-proposal:gcIssues with the implementation of the gc wasm proposalIssues with the implementation of the gc wasm proposal

Status: Open.

#13461 In bytecodealliance/wasmtime;

· gfx opened on May 23, 2026

Compiler should detect equality/inequality comparisons for v128 in wasm and generate one VTEST instruction only

cranelift:goal:optimize-speedFocus area: the speed of the code produced by Cranelift.Focus area: the speed of the code produced by Cranelift.

wasm-proposal:simdIssues related to the WebAssembly SIMD proposalIssues related to the WebAssembly SIMD proposal

Status: Open.

#13405 In bytecodealliance/wasmtime;

· AngelicosPhosphoros opened on May 18, 2026

wasip3: sockets-tcp-connect::test_explicit_bind_addrinuse does not get AddressInUse on second bind

Status: Open.

#13396 In bytecodealliance/wasmtime;

· cataggar opened on May 16, 2026

Optimize array.fill with more libcalls, optimize array.copy for more collectors

performance

wasm-proposal:gcIssues with the implementation of the gc wasm proposalIssues with the implementation of the gc wasm proposal

Status: Open.

#13386 In bytecodealliance/wasmtime;

· alexcrichton opened on May 15, 2026

Trying to run wasip2 example fails

wasmtime:docsIssues related to Wasmtime's documentationIssues related to Wasmtime's documentation

Status: Open.

#13363 In bytecodealliance/wasmtime;

· ValorZard opened on May 14, 2026

Switching to a faster hashmap implementation

Status: Open.

#13355 In bytecodealliance/wasmtime;

· jeffcharles opened on May 13, 2026

How to add fuel when yielding execution using async when it ends?

Status: Open.

#13338 In bytecodealliance/wasmtime;

· AngelicosPhosphoros opened on May 11, 2026