One example that comes to mind is the (abandoned) proposal for safe arena allocation in Go. It takes advantage of the fact that 64 bit computers have absolutely

One example that comes to mind is the (abandoned) proposal for safe arena allocation in Go. It takes advantage of the fact that 64 bit computers have absolutely massive virtual memory, so that "freed" memory can be permanently unmapped from virtual memory in order to make any future accesses an error instead of a use-after-free bug. https://github.com/golang/go/issues/51317 https://github.com/golang/go/issues/51317