How does Rust's memory model differ from C++ memory model at a systems level?

Rust enforces memory safety at compile time, while C++ relies on undefined behavior rules and developer discipline.

C++ allows undefined behavior when rules are violated, relying heavily on programmer correctness. Rust encodes ownership, borrowing, and lifetime rules in the type system, eliminating entire classes of memory errors at compile time. Rust's model is more restrictive but guarantees safety without runtime overhead.