Note that nowadays the preferred way to handle null pointers in APIs is the `Option<NonNull>` type. This unfortunately wasn't available in Rust 1.0. https://do

Note that nowadays the preferred way to handle null pointers in APIs is the `Option<NonNull>` type. This unfortunately wasn't available in Rust 1.0. https://doc.rust-lang.org/std/ptr/struct.NonNull.html https://doc.rust-lang.org/std/ptr/struct.NonNull.html