Tags: #unsafe-rust

DrunkLeen

21 Dec 2025
#programming#rust#error-handling#unsafe-rust

Unsafe Rust starts where Rust no longer guarantees safety

This article explains what unsafe really means in Rust and why it exists. unsafe does not turn safety off; it shifts responsibility from the compiler to the programmer. By looking at real code examples, we see how raw pointers work, what Undefined Behavior is, and why it is far more dangerous than a simple panic. Finally, the article shows how unsafe should be used correctly: kept small, controlled, and hidden behind safe abstractions, with clear invariants that make the rest of the code safe to use.