It&#x27;s not false advertising; it&#x27;s a bug. Rust is not perfect. It&#x27;s also not undefined behavior. <a href="https:&#x2F;&#x2F;github.com&#x2F;rust-lang&#x2F;rust&#x2F;issues&#x2F;16012" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;rust-lang&#x2F;rust&#x2F;issues&#x2F;16012</a><p>(Basically, stack probes are only implemented on Windows, and we need them on the other platforms, but it hasn&#x27;t been implemented yet, for various reasons.)