Stream: git-wasmtime

Topic: wasmtime / issue #13025 Fixed length lists in FACT don't ...


view this post on Zulip Wasmtime GitHub notifications bot (Apr 09 2026 at 20:38):

alexcrichton opened issue #13025:

This is a bit of a future-facing concern since memory64 doesn't currently work with components (but that may change in the near-ish future). Much of the rest of FACT is designed to support memory64 eventually, however, and I figured it'd be good to log this as an issue.

Specifically the count of items left to process is an i32 while later pointer-sized operations are used to manipulate it. This'll want to get fixed.

When fixing this it'd be good to be sure this is caught by the fact-valid-module.rs fuzzer and/or ensure it's up-to-date. Support for fixed-length-lists probably wants to be added there too.

view this post on Zulip Wasmtime GitHub notifications bot (Apr 09 2026 at 20:38):

alexcrichton added the wasm-proposal:component-model label to Issue #13025.


Last updated: Apr 12 2026 at 23:10 UTC