1 // Test explores how `#[structral_match]` behaves in tandem with
2 // `*const` and `*mut` pointers.
6 #![warn(pointer_structural_match)]
8 struct NoDerive(#[allow(unused_tuple_struct_fields)] i32);
10 // This impl makes NoDerive irreflexive
11 // (which doesn't matter here because `<*const T>::eq` won't recur on `T`).
12 impl PartialEq for NoDerive { fn eq(&self, _: &Self) -> bool { false } }
14 impl Eq for NoDerive { }
16 #[derive(PartialEq, Eq)]
17 struct WrapEmbedded(*const NoDerive);
19 const WRAP_UNSAFE_EMBEDDED: WrapEmbedded = WrapEmbedded(std::ptr::null());
22 match WRAP_UNSAFE_EMBEDDED {
23 WRAP_UNSAFE_EMBEDDED => { println!("WRAP_UNSAFE_EMBEDDED correctly matched itself"); }
24 _ => { panic!("WRAP_UNSAFE_EMBEDDED did not match itself"); }