rust-lang / rust-lang/rust-clippy
False positive for boxed local with `wasm_bindgen`
Nobody has claimed this yet.
- Dominant language
- Rust
- Stars
- 13.5k
- Forks
- 2.2k
- Avg merge
- 2d 10h
- Merged PRs (30d)
- 32
Description
wasm_bindgen is a little bit different than the issue that's been resolved with traits. In particular, wasm_bindgen just generates code around the non-trait implemented function, and the only way to use native JS arrays as parameters is to use Box<[...]>.
In general, I think maybe boxed slices should be considered ok for local parameters, as they're conceptually very similar to vectors.
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by locating the Clippy lint that reports boxed locals and find its existing regression tests. Reproduce the wasm_bindgen case described here, then determine whether boxed slices used as local parameters should be exempted and add coverage showing the false positive is gone.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- rust
- Domain
- tooling
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 35/100