From the article:<p>&gt; The Rust program got a segmentation fault because it attempted to write to inaccessible memory, but only through the stack pointer. None of the undefined behaviors disallow this, which I think is why it’s ok for this Rust program to segfault.<p>What I got out of that is that Rust <i>does not work as advertised</i> if there are still situations where a program could segfault. The entire premise of Rust, as I understood it at least, is that it does things in a safe manner and the programmer does not have to worry about it. Now I learned that there are undefined behaviors. In my view, for a language that bills itself as safe, there should not exist such things as undefined behaviors. As far as I am concerned, then, based on the advertising of Rust, this is <i>false advertising</i>.