Minimize unsafe blocks, isolate them in dedicated modules, and document the specific safety invariants they uphold to maintain Rust's memory guarantees.
Minimize unsafe blocks, isolate them in dedicated modules, and document the specific safety invariants they uphold. Use unsafe only when interacting with external code, performing raw pointer arithmetic, or calling other unsafe functions, ensuring the compiler's safety guarantees are manually verified before execution.
unsafe fn read_raw_pointer(ptr: *const i32) -> i32 {
// SAFETY: We guarantee ptr is valid, initialized, and not moved.
*ptr
}
Unsafe code in Rust is like driving without a seatbelt; it gives you full control but removes the safety net that prevents crashes. You should only use it when absolutely necessary, such as when talking to other programming languages or managing memory directly, and you must promise the code is safe. Think of it as a special tool for experts that requires a signed waiver before use.