Contributed a focused documentation enhancement to the rust-lang/rust repository, addressing memory safety concerns related to unaligned references in packed structs and unions. The work clarified that the safety rule for unaligned references applies equally to unions, reducing ambiguity for developers working with Rust’s low-level features. By updating the Markdown-based documentation, the contribution provided concrete usage examples and improved consistency across the project’s guidance on packed representations. Leveraging expertise in Rust and technical writing, the developer ensured that the documentation now offers clearer, more actionable information for users, supporting safer code practices without introducing new features or addressing existing bugs.