Translating Quake 3 into Rust (immunant.com)

Article summary

The Immunant team has successfully translated Quake 3 into Rust using their C2Rust migration framework, achieving a playable version of the game. The translation process involved addressing several issues, including pointer arithmetic, flexible array members, and inline assembly. The team aims to make safety improvements to the translated Rust code automatically where possible. The project demonstrates the potential of C2Rust for migrating legacy C code to Rust.

Main themes

• C to Rust migration
• Code modernization
• Language semantics
• Performance optimization
• Memory safety
• Legacy code translation

What commenters say

• Some argue that C2Rust's goal of producing idiomatic Rust code is difficult to achieve due to the differences in semantics between C and Rust.
• Others believe that C2Rust can still be valuable even if it doesn't produce perfectly idiomatic code, as it can help with code modernization and safety improvements.
• There is a debate about whether Rust code can be faster than C code, with some arguing that Rust's stronger guarantees can lead to better optimizations.
• The use of C2Rust to translate existing C code to Rust can help uncover latent memory errors and improve code security.
• Some commentators think that Rust's performance advantages over C are not yet fully realized due to LLVM bugs and missing language features.
• Others suggest that the performance difference between Rust and C may not be a significant decision driver, as other factors like safety and maintainability are more important.