Async parsing issue

[morenol]

I have a WASM file produced by building a rust project with wit-bindgen 0.42.1 for target wasm32-wasip2

If I run this with wasm-tools 1.224.1, it succeeds

% wasm-tools validate df_expr_guest.wasm --features component-model-async

If I run it, using 1.225 or any newer version

wasm-tools validate df_expr_guest.wasm --features component-model-async
error: unexpected end-of-file (at offset 0x30d49)

Issue started once I enabled async: true, on wit-bindgen generate! macro

Not sure if this is an issue for wit-bindgen, or for wasm-tools

[alexcrichton]

Thanks for the report, but the binary format of async is changing currently as it's not stable, so you'll want to ensure you're using the latest bindgen/wasm-tools combo. This sometimes can involve/require using things from git, but I think at the current point in time using things from crates.io should work.

[morenol]

thanks for the info, I also found that the wit-component version used depend on the rust toolchain version. And current stable rust version uses wit-component 0.223