Unsafe

Definitions

1. A keyword in Rust (and similar languages) that opts out of certain compiler safety guarantees, allowing raw pointer dereferences, FFI calls, and other operations the borrow checker cannot verify. Used when you need to do something the type system can't prove safe.

   In plain English: A way to tell the Rust compiler 'trust me, I know what I'm doing' for code that's too low-level for the safety system to check automatically.

   Example: "The unsafe block is three lines long and has a two-page comment explaining why it's correct."

Related Terms

• Assembler
• Borrowing
• Cargo
• Lifetime
• Machine Code
• Mnemonic
• Opcode
• Ownership
• Overflow
• Rust Borrow Checker
• Rust Lifetime
• Rust Unsafe
• Variable Shadowing