You can't even say that about languages _with_ a GC. At least not as long as you use the practical definition of "leaks memory", which is that the memory remai

You can't even say that about languages _with_ a GC. At least not as long as you use the practical definition of "leaks memory", which is that the memory remains alive until the application shuts down. Here's a simple example of a memory leak in JS in that sense (modulo nontrivial manual cleanup, obviously): window[Math.random()] = new Array(100000); A much more interesting question, in some ways, is what guarantees you have about not accessing no-longer-alive objects. That's where Rust has some serious advantages over C++, say.