Wasmtime GitHub notifications bot (Aug 10 2026 at 19:17): Wasmtime GitHub notifications bot (Aug 10 2026 at 19:17):alexcrichton opened issue #14108:
This proposal has recently moved to stage 4 support in the CG meaning that modules may start using this by default. We should enable this within Wasmtime and turn it on as well. This won't really require any substantive changes to Wasmtime since the proposal is primarily implemented in
wasmparserwhich already implements this. The main change, though, is that we probably want to enable fuzzing for this proposal as it's not currently implemented.
Wasmtime GitHub notifications bot (Aug 10 2026 at 19:17):alexcrichton added the enhancement label to Issue #14108.
Wasmtime GitHub notifications bot (Aug 19 2026 at 19:46):chacailline commented on issue #14108:
Hi, I'd like to work on this.
It'll be my first PR, but I see #9403 looks similar. I think I need to:
- Add
wasm-smithgeneration for compact imports (it doesn't currently AFAICT), and enable it inwasmtimefuzzing config.- Follow implementation steps in the docs, and enable the feature by default.
Anything else?
Wasmtime GitHub notifications bot (Aug 19 2026 at 19:46):chacailline edited a comment on issue #14108:
Hi, I'd like to work on this.
It'll be my first PR, but I see #9403 looks similar. I think I need to:
- Add
wasm-smithgeneration for compact imports (it doesn't currently AFAICT), and enable it inwasmtimefuzzing config.- Follow implementation steps in the docs, and enable the proposal by default.
Anything else?
Wasmtime GitHub notifications bot (Aug 19 2026 at 19:50):alexcrichton commented on issue #14108:
That's about right yeah, and this'll be a bit easier than most since it has virtually no impact on Wasmtime outside of configuration. For example there's no API changes necessary.
These are the requirements for enabling a feature by default, so yeah I'd summarize the major missing pieces as (a) fuzzing and (b) configuration. For the configuration side that'd be things like a
Configmethod, a CLI flag, C API, etc. The docs you've found (online here as well) may be a little outdated, but if you'd like to update those along the way with any edits/steps you've done as well that'd be much appreciated!
Wasmtime GitHub notifications bot (Sep 11 2026 at 00:02):alexcrichton commented on issue #14108:
@chacailline if you'd like your work in https://github.com/bytecodealliance/wasm-tools/pull/2627 has now landed in Wasmtime through a wasm-tools update over at https://github.com/bytecodealliance/wasmtime/pull/14244. Wasmtime should now be ready to get the configuration option/fuzzing/etc. If you're busy no worries though!
Wasmtime GitHub notifications bot (Sep 11 2026 at 19:41):chacailline commented on issue #14108:
Thank you! I am working on this, and expect to have a PR today or tomorrow.
Last updated: Sep 20 2026 at 19:05 UTC