> On 64-bit Apple platforms, the entire 4 GiB 32-bit address space (addresses [0x00000000, 0xFFFFFFFF]) is not accessible by the process, which catches both NUL

> On 64-bit Apple platforms, the entire 4 GiB 32-bit address space (addresses [0x00000000, 0xFFFFFFFF]) is not accessible by the process, which catches both NULL pointer dereference bugs and 64-bit to 32-bit pointer truncation bugs. Is that just an iOS thing, or does macOS do that as well? Anyone know?