Something separate that occurred to me - many systems have empty sections of address space, those addresses can't back `malloc(1)` allocations but they could ba

Something separate that occurred to me - many systems have empty sections of address space, those addresses can't back `malloc(1)` allocations but they could back `malloc(0)` allocations with a unique address. I doubt any C runtime out there will actually do that, but in theory it could be done.