> What is my_ptr->member but unwrapping an optionally null pointer. It's a dereference of a pointer that might be null and thereby yield undefined behavior; th

> What is my_ptr->member but unwrapping an optionally null pointer. It's a dereference of a pointer that might be null and thereby yield undefined behavior; there's no required unwrapping under an explicit test for null, as is required by Zig. In Zig, my_ptr cannot be null in my_ptr.member -- null is not a valid pointer value. If my_ptr is an optionally null pointer then the pointer value must be unwrapped by first checking whether it is null ... the dereference can only occur in the test branch where the pointer isn't null. Note that the mention of Zig that I responded to was in reference to Tony Hoare's "billion dollar mistake", which was making null a valid value of a pointer type. As I noted, the mistake doesn't occur in Zig because null is not a valid value for a pointer, only an optional pointer, which must be unwrapped with an explicit null test. If you had no idea what I was referring to, you might have asked. Rather, you asked a rhetorical question with no question mark, implying the falsehood that my_ptr->member is "unwrapping an optionally null pointer" when it's nothing of the sort.