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c-api: Dealing with lists is inconsistent across APIs

wasmtime:c-apiIssues pertaining to the C API.Issues pertaining to the C API.

Status: Open.

#11940 In bytecodealliance/wasmtime;

· alexcrichton opened on Oct 24, 2025

winch(aarch64): Wide arithmetic

winchWinch issues or pull requestsWinch issues or pull requests

Status: Open.

#11929 In bytecodealliance/wasmtime;

· saulecabrera opened on Oct 23, 2025

Cranelift: <code>opt_level=speed</code> breaks <code>sdiv i64::MIN, i64::MIN</code>

bugIncorrect behavior in the current implementation that needs fixingIncorrect behavior in the current implementation that needs fixing

craneliftIssues related to the Cranelift code generatorIssues related to the Cranelift code generator

Status: Open.

#11927 In bytecodealliance/wasmtime;

· emturner opened on Oct 23, 2025

Add headers in wasmtime serve via CLI

wasmtime:serveIssues related to `wasmtime serve`Issues related to `wasmtime serve`

Status: Open.

#11925 In bytecodealliance/wasmtime;

· rajsite opened on Oct 23, 2025

[coop-threading] Re-enable component model tests when co-op threading changes are merged

wasm-proposal:component-threadingIssues related to cooperative threading in the component modelIssues related to cooperative threading in the component model

Status: Open.

#11924 In bytecodealliance/wasmtime;

· TartanLlama opened on Oct 23, 2025

[coop-threading] Match trap conditions against spec

wasm-proposal:component-threadingIssues related to cooperative threading in the component modelIssues related to cooperative threading in the component model

Status: Open.

#11910 In bytecodealliance/wasmtime;

· TartanLlama opened on Oct 22, 2025

[coop-threading] Extensive testing

wasm-proposal:component-threadingIssues related to cooperative threading in the component modelIssues related to cooperative threading in the component model

Status: Open.

#11909 In bytecodealliance/wasmtime;

· TartanLlama opened on Oct 22, 2025

[coop-threading] Convert tests to wast

wasm-proposal:component-threadingIssues related to cooperative threading in the component modelIssues related to cooperative threading in the component model

Status: Open.

#11908 In bytecodealliance/wasmtime;

· TartanLlama opened on Oct 22, 2025

Debugging: build an async debugger API on top of <code>run_concurrent</code>

Status: Open.

#11896 In bytecodealliance/wasmtime;

· cfallin opened on Oct 21, 2025

Functions defined with <code>wrap_async</code> and various variants "block" the store from making progress on concurrent tasks

wasm-proposal:component-model-asyncIssues related to the WebAssembly Component Model async proposalIssues related to the WebAssembly Component Model async proposal

Status: Open.

#11870 In bytecodealliance/wasmtime;

· alexcrichton opened on Oct 15, 2025

Async libcalls "block" the store from making progress on concurrent tasks

wasm-proposal:component-model-asyncIssues related to the WebAssembly Component Model async proposalIssues related to the WebAssembly Component Model async proposal

Status: Open.

#11869 In bytecodealliance/wasmtime;

· alexcrichton opened on Oct 15, 2025

Segfault with exceptions + single-pass regalloc

cranelift:area:regallocIssues related to register allocation.Issues related to register allocation.

fuzz-bugBugs found by a fuzzerBugs found by a fuzzer

wasm-proposal:exceptionsIssues for WebAssembly exceptions/exception-handlingIssues for WebAssembly exceptions/exception-handling

Status: Open.

#11850 In bytecodealliance/wasmtime;

· alexcrichton opened on Oct 14, 2025