Stream: git-wasmtime

Topic: wasmtime / issue #10119 `wasmtime_wasi::bindings` compila...

view this post on Zulip Wasmtime GitHub notifications bot (Jan 27 2025 at 02:13):

robherley added the bug label to Issue #10119.

view this post on Zulip Wasmtime GitHub notifications bot (Jan 27 2025 at 02:13):

robherley opened issue #10119:

Test Case

I have a minimal repro in this repository: https://github.com/robherley/wasmtime-bindgen-repro

Steps to Reproduce

  1. Follow the example from wasmtime-wasi crate:
    https://github.com/bytecodealliance/wasmtime/blob/58282df898d79a787a726d829b166272dde155b9/crates/wasi/src/bindings.rs#L39-L41

  2. Attempt to compile.

  3. Error, need to cargo expand (see my expanded.rs) or add include_generated_code_from_file: true to the macro.

Expected Results

The generated binding have the correction function signatures.

Actual Results

<img width="1040" alt="Image" src="https://github.com/user-attachments/assets/8b20dc15-a59b-491f-84a8-7b6c7a09d640" />

Versions and Environment

Wasmtime version or commit: 29.0.1

Operating system: macOS 15.1.1

Architecture: arm64

Extra Info

The only affected bindings are:

__with_name0::cli::exit::add_to_linker(linker, get)?;
__with_name0::sockets::network::add_to_linker(linker, get)?;

Which are missing &wasmtime_wasi::bindings::cli::exit::LinkOptions and &wasmtime_wasi::bindings::sockets::network::LinkOptions

view this post on Zulip Wasmtime GitHub notifications bot (Jan 27 2025 at 02:17):

robherley commented on issue #10119:

I'm guessing this is related to runtime feature-gated options:

Instead, the generated add_to_linker*** functions take an additional LinkOptions parameter if the world/interface has any unstable features.

view this post on Zulip Wasmtime GitHub notifications bot (Jan 27 2025 at 18:10):

alexcrichton commented on issue #10119:

Thanks for the report! I think the problem may lie in your original WIT files perhaps? Looking at https://github.com/robherley/wasmtime-bindgen-repro/blob/main/wit/deps/wasi-cli-0.2.3/package.wit I don't see exit-with-code which is a feature-gated API, which means that the two bindgens are starting from different WITs?

view this post on Zulip Wasmtime GitHub notifications bot (Jan 27 2025 at 21:13):

robherley commented on issue #10119:

:wave: @alexcrichton Thanks for following up so fast! It does look like the wit does not match the bindings provided by wasmtime_wasi crate.

But, I resolved my .wit files from wkg:

<img width="576" alt="Image" src="https://github.com/user-attachments/assets/e1f5f678-d577-4da3-81bb-49be3f91ada0" />

Which is odd, since the resolved version of wasi-cli-0.2.3 doesn't seem to have exit-with-code?

Even if I run:

wkg get wasi:cli@0.2.3
cat wasi_cli@0.2.3.wit | grep exit-with-code

There is no reference to the @unstable(feature = cli-exit-with-code).

Is the version of wasi:cli on the registry incorrect? Or is there something else I'm misunderstanding

view this post on Zulip Wasmtime GitHub notifications bot (Jan 27 2025 at 21:22):

alexcrichton commented on issue #10119:

I think the issue might like with wkg yeah, there's some subtelties around handling WIT and features which might need some patching. Mind opening an issue over there and cc'ing me?

view this post on Zulip Wasmtime GitHub notifications bot (Jan 27 2025 at 21:27):

robherley closed issue #10119:

Test Case

I have a minimal repro in this repository: https://github.com/robherley/wasmtime-bindgen-repro

Steps to Reproduce

  1. Follow the example from wasmtime-wasi crate:
    https://github.com/bytecodealliance/wasmtime/blob/58282df898d79a787a726d829b166272dde155b9/crates/wasi/src/bindings.rs#L39-L41

  2. Attempt to compile.

  3. Error, need to cargo expand (see my expanded.rs) or add include_generated_code_from_file: true to the macro.

Expected Results

The generated binding have the correction function signatures.

Actual Results

<img width="1040" alt="Image" src="https://github.com/user-attachments/assets/8b20dc15-a59b-491f-84a8-7b6c7a09d640" />

Versions and Environment

Wasmtime version or commit: 29.0.1

Operating system: macOS 15.1.1

Architecture: arm64

Extra Info

The only affected bindings are:

__with_name0::cli::exit::add_to_linker(linker, get)?;
__with_name0::sockets::network::add_to_linker(linker, get)?;

Which are missing &wasmtime_wasi::bindings::cli::exit::LinkOptions and &wasmtime_wasi::bindings::sockets::network::LinkOptions

view this post on Zulip Wasmtime GitHub notifications bot (Jan 27 2025 at 21:27):

robherley commented on issue #10119:

Totally, I'll close this one out :+1:

Last updated: Dec 13 2025 at 21:03 UTC