[tialaramex]

Zngur does allow you to execute arbitrary C++ from Rust.

Unfortunately it chooses to just assume your C++ is sound, it does explicitly warn you that you're signing up for this, but realistically this just doubles down on the known bad assumption in C++ that programmers are infallible.

Rather than (like Rust's native C FFI) marking the arbitrary C++ as unsafe, Zngur chooses to have you explicitly opt in if you want your code marked unsafe. We know from years of practical experience that C++ programmers rely heavily on unstated assumptions for the correctness of code, a practice which does not scale. A very large proportion of the C++ stdlib itself has a narrow contract, yet few practitioners memorise these contracts and they're unchecked - disaster looms.