rust-lang / rust-lang/rust-clippy
New Lint: `ptr::write` to `#[repr(packed)]` struct field
Open
Nobody has claimed this yet.
A-lint
E-needs-mcve
S-waiting-on-author
- Dominant language
- Rust
- Stars
- 13.5k
- Forks
- 2.2k
- Avg merge
- 2d 10h
- Merged PRs (30d)
- 32
Description
I'm not sure how implementable this is, but if there's a way to add a lint to check for ptr::write to #[repr(packed)] struct fields, this would be a great lint to have. And it should probably be deny by default, and should suggest using ptr:: write_unaligned instead.
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
The issue names cargo clippy as the entry point and requests a lint for ptr::write on #[repr(packed)] fields, with a ptr::write_unaligned suggestion. Start by locating Clippy’s lint and test conventions; done means the pattern is detected, the replacement is suggested, and the requested default severity is covered by tests.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- rust
- Domain
- tooling
- Issue type
- Feature
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100