...and the same is true of Rust, just with different defaults. Switch allocation failure from an abort to a panic and catch the panic just like you would in C++

...and the same is true of Rust, just with different defaults. Switch allocation failure from an abort to a panic and catch the panic just like you would in C++. What's incomplete about that? It's not like C++ can't be switched in the other direction with -fno-exceptions or equivalent.