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Fix leaks of already-initialized fields when struct/array init fails

wasmtime:apiRelated to the API of the `wasmtime` crate itselfRelated to the API of the `wasmtime` crate itself

wasmtime:ref-typesIssues related to reference types and GC in WasmtimeIssues related to reference types and GC in Wasmtime

Status: Open (in progress).

bytecodealliance/wasmtimenumber 12482

#12482 In bytecodealliance/wasmtime;

· zzjas opened on Jan 31, 2026

Component model threading intrinsic updates

wasmtime:apiRelated to the API of the `wasmtime` crate itselfRelated to the API of the `wasmtime` crate itself

wasmtime:configIssues related to the configuration of WasmtimeIssues related to the configuration of Wasmtime

Status: Draft (not ready).

bytecodealliance/wasmtimenumber 12466

#12466 In bytecodealliance/wasmtime;

· TartanLlama opened on Jan 29, 2026

<code>ResourceAny</code> API ergonomics

wasm-proposal:component-modelIssues related to the WebAssembly Component Model proposalIssues related to the WebAssembly Component Model proposal

wasmtime:apiRelated to the API of the `wasmtime` crate itselfRelated to the API of the `wasmtime` crate itself

Status: Open.

#12465 In bytecodealliance/wasmtime;

· crepererum opened on Jan 29, 2026

Check may-leave flags in trampolines, not Rust

wasmtime:apiRelated to the API of the `wasmtime` crate itselfRelated to the API of the `wasmtime` crate itself

Status: Draft (not ready).

bytecodealliance/wasmtimenumber 12427

#12427 In bytecodealliance/wasmtime;

· alexcrichton opened on Jan 25, 2026

RR: Config knobs and validation

wasmtime:apiRelated to the API of the `wasmtime` crate itselfRelated to the API of the `wasmtime` crate itself

wasmtime:configIssues related to the configuration of WasmtimeIssues related to the configuration of Wasmtime

Status: Open (in progress).

bytecodealliance/wasmtimenumber 12375

#12375 In bytecodealliance/wasmtime;

· arjunr2 opened on Jan 20, 2026

Fixed-length lists, host side

fuzzingIssues related to our fuzzing infrastructureIssues related to our fuzzing infrastructure

wasmtime:apiRelated to the API of the `wasmtime` crate itselfRelated to the API of the `wasmtime` crate itself

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

wasmtime:configIssues related to the configuration of WasmtimeIssues related to the configuration of Wasmtime

Status: Draft (not ready).

bytecodealliance/wasmtimenumber 12315

#12315 In bytecodealliance/wasmtime;

· cpetig opened on Jan 11, 2026

Add support for map type

fuzzingIssues related to our fuzzing infrastructureIssues related to our fuzzing infrastructure

wasmtime:apiRelated to the API of the `wasmtime` crate itselfRelated to the API of the `wasmtime` crate itself

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

wasmtime:configIssues related to the configuration of WasmtimeIssues related to the configuration of Wasmtime

wizerIssues related to Wizer snapshotting, pre-initialization, and the `wasmtime wizer` subcommandIssues related to Wizer snapshotting, pre-initialization, and the `wasmtime wizer` subcommand

Status: Draft (not ready).

bytecodealliance/wasmtimenumber 12216

#12216 In bytecodealliance/wasmtime;

· yordis opened on Dec 23, 2025

Additional matching

wasmtime:apiRelated to the API of the `wasmtime` crate itselfRelated to the API of the `wasmtime` crate itself

Status: Open (in progress).

bytecodealliance/wasmtimenumber 12212

#12212 In bytecodealliance/wasmtime;

· BoilingFusion opened on Dec 22, 2025

Add <code>matches</code> function to all types structs

wasmtime:apiRelated to the API of the `wasmtime` crate itselfRelated to the API of the `wasmtime` crate itself

Status: Open.

#12193 In bytecodealliance/wasmtime;

· BoilingFusion opened on Dec 20, 2025

feat(p3): implement <code>wasi:tls</code>

wasmtime:apiRelated to the API of the `wasmtime` crate itselfRelated to the API of the `wasmtime` crate itself

Status: Draft (not ready).

bytecodealliance/wasmtimenumber 12174

#12174 In bytecodealliance/wasmtime;

· rvolosatovs opened on Dec 16, 2025

Update README and linker documentation for function wrapping in module instances

wasmtime:apiRelated to the API of the `wasmtime` crate itselfRelated to the API of the `wasmtime` crate itself

Status: Open (in progress).

bytecodealliance/wasmtimenumber 12073

#12073 In bytecodealliance/wasmtime;

· Tam1SH opened on Nov 23, 2025

Capturing caller instance support

wasmtime:apiRelated to the API of the `wasmtime` crate itselfRelated to the API of the `wasmtime` crate itself

Status: Open (in progress).

bytecodealliance/wasmtimenumber 12064

#12064 In bytecodealliance/wasmtime;

· gionut opened on Nov 21, 2025