Comment by learningstud

The real difficulty of systems programming in C is due to syscall/POSIX/libc semantics like the interplay between signal handling and async readv/writev resumption. These things are way beyond what the borrow checker and coverage-guided fuzzers can deal with and consist the bulk of vulnerabilities. Rust won't save you from CopyFail; you would need hardcore formal verification like TLA+ coupled with F* /Low* /Pulse to catch it before release. AI (or manual) Rust rewrites of well trodden C code is calling for trouble more than anything else.