Use a CxxString: https://cxx.rs/binding/cxxstring.html https://cxx.rs/binding/cxxstring.html At some point there will need to be an allocation when crossing Ru

Use a CxxString: https://cxx.rs/binding/cxxstring.html https://cxx.rs/binding/cxxstring.html At some point there will need to be an allocation when crossing Rust -> C++ boundary because Rust strings are not null-terminated. The difference Rust makes is that unlike C++, it is always explicit when the allocation occurs.