Unfortunately, documentation [1] is still kind of lacking. Like Rust (and arguably modern C++ conventions?), the safe subset doesn't support pointer arithmetic directly. You would have to convert the pointer to an iterator (and its target to an appropriate container).

Auto-conversion of code that uses pointer arithmetic is challenging, but has been demonstrated to be solvable in the general case [2].

[1] https://github.com/duneroadrunner/SaferCPlusPlus#getting-sta...

[2] https://github.com/duneroadrunner/SaferCPlusPlus-AutoTransla...