🧾 The recent release of Rust 1.85 brings several important improvements in performance, security, and developer experience. Apriorit, as a cybersecurity-first development company, carefully track every update, as it can significantly impact the projects we develop for our clients.
Rust is a relatively young system programming language that continues to evolve actively. It focuses on code security, performance, and concurrency. Let’s look at the main changes in the recent Rust release, and how they may affect your product.
📈 Performance
🔸 Faster execution. Async closures have been stabilized, eliminating unnecessary data cloning.
🔸 More efficient code. More functions are now const, including mem::swap, <float>::{abs, min, max}, and others. This allows more logic to be processed at compile time, enabling the compiler to perform additional checks before runtime, which speeds up execution and simplifies debugging.
🔸 Optimized memory usage. Updates to RPIT lifetime capture rules allow for more adaptable borrowing of values in return position impl Trait, reducing memory overhead and making the code more flexible.
🔒 Security
🔸 Stricter safety requirements for external code. Now, extern blocks must be explicitly marked as unsafe, along with the attributes export_name, link_section, and no_mangle.
🔸 More explicit handling of unsafe operations. All unsafe calls must now be wrapped in an unsafe block, even within unsafe functions. Previously, this was enforced by a separate lint, but it is now the compiler’s default behavior.
🔸 Improved memory safety. References to static mut data are now prohibited, reducing the risk of unsafe access and enhancing reliability when working with FFI.
🖥️ Developer experience
🔸 More control over compiler recommendations. The new #[diagnostic::do_not_recommend] attribute allows suppressing unnecessary suggestions for custom traits, reducing noise in compiler output.
🔸 Enhanced code safety. A new lint, unpredictable_function_pointer_comparisons, now detects and warns about function pointer comparisons, helping developers avoid potential issues.
🔸 More precise error handling. The I/O error types QuotaExceeded and CrossesDevices have been stabilized, improving error classification. This is particularly relevant for Apriorit, though we are still awaiting the stabilization of additional error types.
🔸 Faster custom builds. Changes to RUSTFLAGS no longer trigger a full rebuild of dependencies, improving caching efficiency and speeding up the development process.
The updates make code safer, faster, and more convenient to develop. We are testing Rust 1.85 in our projects and integrating its improvements into our workflows ⚙️
Apriorit experts are ready to apply these advantages of Rust to your project and create a secure and reliable solution for your business:
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