Stream: git-wasmtime

Topic: wasmtime / PR #14800 Update WASIp3 to 0.3.2

view this post on Zulip Wasmtime GitHub notifications bot (Oct 19 2026 at 06:29):

jrandolf opened PR #14800 from jrandolf:wasi-0.3.2 to bytecodealliance:main:

This updates the vendored WASIp3 WITs to the 0.3.2 release of WASI, so wasmtime-wasi and wasmtime-wasi-http now implement the 0.3.2 versions of the interfaces. Apart from version numbers the WITs are the same as 0.3.0; the only other difference is a doc comment about casing in wasi:http's fields.

Components built against 0.3.0, which includes everything Rust's wasm32-wasip3 target produces today, keep working because imports and exports are matched on semver-compatible versions. I've added a CLI test that runs the existing p3 WAT test at @0.3.0 against the new host to make sure that stays true.

view this post on Zulip Wasmtime GitHub notifications bot (Oct 19 2026 at 06:29):

jrandolf requested rvolosatovs for a review on PR #14800.

view this post on Zulip Wasmtime GitHub notifications bot (Oct 19 2026 at 06:29):

jrandolf requested wasmtime-wasi-reviewers for a review on PR #14800.

view this post on Zulip Wasmtime GitHub notifications bot (Oct 19 2026 at 06:29):

jrandolf requested dicej for a review on PR #14800.

view this post on Zulip Wasmtime GitHub notifications bot (Oct 19 2026 at 06:29):

jrandolf requested wasmtime-core-reviewers for a review on PR #14800.

view this post on Zulip Wasmtime GitHub notifications bot (Oct 19 2026 at 06:29):

jrandolf requested fitzgen for a review on PR #14800.

view this post on Zulip Wasmtime GitHub notifications bot (Oct 19 2026 at 06:29):

jrandolf requested wasmtime-default-reviewers for a review on PR #14800.

view this post on Zulip Wasmtime GitHub notifications bot (Oct 19 2026 at 08:56):

github-actions[bot] added the label wasi on PR #14800.

view this post on Zulip Wasmtime GitHub notifications bot (Oct 19 2026 at 14:53):

alexcrichton commented on PR #14800:

I'll note that given how WASI versioning works we cannot land this yet. WASI 0.3.1 requires map<K, V> and the (implements ...) features to be supported, and neither is on-by-default right now. Notably implements has no fuzzing and map has been fuzzed for a bit and might be ready. I see sibling PRs for these, however.

view this post on Zulip Wasmtime GitHub notifications bot (Oct 21 2026 at 16:59):

rvolosatovs removed the review request for rvolosatovs from PR #14800.

view this post on Zulip Wasmtime GitHub notifications bot (Oct 21 2026 at 18:22):

fitzgen removed the review request for fitzgen from PR #14800.

view this post on Zulip Wasmtime GitHub notifications bot (Oct 21 2026 at 18:29):

jrandolf updated PR #14800.

Last updated: Oct 31 2026 at 23:03 UTC