[Sean1708]

My assembly knowledge is limited, but it looks like both const_pointer and const_value get put into .rodata (read-only data). In both cases you're trying to change what is at the memory location that the pointer points to, in the first case it's the pointer that's in .rodata so you can change what it points to, but in the second case it's the value that's in .rodata so you can't change it.

Edit: Actually I don't think the pointer is put anywhere, rather its value is stored in .data (non-read-only data) so it can be mutated without issue. Again though, my assembly isn't amazing.