Unsafe code soundness requires manual adherence to memory safety rules within `unsafe` blocks to prevent undefined behavior.
Unsafe code soundness requires you to manually uphold the compiler's safety guarantees, specifically ensuring no invalid references, data races, or memory corruption occur. You must explicitly mark these blocks with unsafe to acknowledge the responsibility.
unsafe {
let ptr = 0x01234567usize as *const i32;
let value = *ptr; // Only safe if ptr is valid and aligned
}
Unsafe code is like driving a car without a seatbelt; the compiler won't stop you, but you are fully responsible for not crashing. You use it only when you need direct control over memory or hardware that safe Rust restricts. If you break the rules, your program will crash or corrupt data without warning.