trait example

src/main.rs

@@ -5,7 +5,8 @@ use std::marker::Sized;
 
 #[derive(Debug, Copy, Clone)]
 #[repr(C)]
-struct Point {
+
+struct Plain {
     x: u32,
     y: u32,
 }
@@ -30,7 +31,7 @@ where
 trait OkInState {}
 impl OkInState for .. {}
 
-impl !OkInState for Point {}
+impl !OkInState for Plain {}
 
 // You cannot implement it yourself
 //impl OkInState for Point {}
@@ -47,7 +48,7 @@ where
 struct X {}
 
 fn main() {
-    let mut p = Point { x: 0, y: 1 };
+    let mut p = Plain { x: 0, y: 1 };
     let _c = Cont { data: X {} };
     let _c = Cont { data: p };
     println!(" p {:?}", p);