The style guide for most projects is to include a comment on the unsafe block's header. Clippy has a lint for unsafe fns[1], and with either changes to the Rust

The style guide for most projects is to include a comment on the unsafe block's header. Clippy has a lint for unsafe fns[1], and with either changes to the Rust AST (to not discard comments) or to the acceptability of doc attributes on unsafe blocks (to allow the use a /// comment on unsafe blocks), that lint could also work for unsafe blocks. [1]: https://rust-lang.github.io/rust-clippy/master/#missing_safety_doc https://rust-lang.github.io/rust-clippy/master/#missing_safe...