Comment by zozbot234

The cxx crate offers partial interop between C++ and Rust - for example, it wraps the C++ unique_ptr (the "take a pointer you have to delete and make it a smart pointer" abstraction) so Rust can make use of it appropriately. It's nowhere near complete, but they do welcome patches and issue reports. Anyway, this isn't even all that relevant to Circle and Safe C++, that can potentially share more with C++ than Rust does, such as avoiding a separate heap abstraction so that Safe C++ might be able to free objects that were allocated in legacy C++ code, etc.