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Radar · Rust · Archive · Week 14 · Mar 31 – Apr 6, 2025

C ABI Changes for `wasm32-unknown-unknown`

Worth knowinglanguage

What changed
The Rust team updated the C ABI for the wasm32-unknown-unknown target.
Production impact
The source does not say.
Try it
Compile a small #[no_mangle] extern "C" function for the wasm32-unknown-unknown target and inspect the generated WebAssembly module.
Source
blog.rust-lang.org/2025/04/04/c-abi-changes-for-wasm32-unknown-unknown/

Written by gpt-oss-20b from the linked source · claims checked against the sources · archive, not individually reviewed