[lint idea] dangerous transmutes · rust-lang/rust-clippy#546

(11 留言) (0 反應) (0 負責人)Rust (10,406 star) (1,391 fork)batch import

A-lintT-middlegood first issue

描述

Along the lines of useless_transmute, it seems plausible to warn on transmute::<X, Y>(x) where X and Y aren't both primitive types or marked #[repr(C)], since as @ubsan keeps reminding us this is likely to cause UB.

貢獻者指南

技術棧: rust
領域: tooling
議題類型: feature
難度: 3
預計時間: 3-5 days
活動狀態: stale
清晰度: clear
前置要求: Rust programmingClippy internalstransmute semantics
新手友善度: 50
研究方向: Look at the existing `useless transmute` lint in the clippy source code (likely in `clippy lints/src/transmute.rs`) to understand the pattern. Identify where to add a new lint check for transmutes where both types are not primitive or `#[repr(C)]`. The issue comments may contain additional context, such as concerns about false positives. Also, review the clippy lint registration and testing guidelines in the repository documentation.