By memory leak you mean that every memory location has a limited number of alloc+free and once it passes that, the memory is unusable?
Maybe you should have said, "to overflow the generational index you would have to exclusively allocate and free it with no work being performed for 150 years. Once the overflow happens the only consequence is that this memory cell will never be allocated again."
Maybe you should have said, "to overflow the generational index you would have to exclusively allocate and free it with no work being performed for 150 years. Once the overflow happens the only consequence is that this memory cell will never be allocated again."