funny thing is that Malloc also behaves like an arena. When your program starts, Malloc reserves a lot of memory, and when your program ends, all this memory is

funny thing is that Malloc also behaves like an arena. When your program starts, Malloc reserves a lot of memory, and when your program ends, all this memory is released. Memory Leak ends up not being a problem with Memory Safety. So, you will still need a borrow checker for the same reasons Rust needs one, and C/C++ also needed.