   1 /// A rectangle. First line is changed to prevent a regression of #1869
   2 struct Rectangle {
   3     width: u32,
   4     height: u32,
   5 }
   6 
   7 fn main() {
   8     let rect1 = Rectangle { width: 30, height: 50 };
   9 
  10     println!(
  11         "The perimeter of the rectangle is {} pixels.",
  12         perimeter(&rect1)
  13     );
  14     println!(r#"This line contains invalid utf8:  "�����"#;
  15 }
  16 
  17 fn area(rectangle: &Rectangle) -> u32 {
  18     rectangle.width * rectangle.height
  19 }
  20 
  21 fn perimeter(rectangle: &Rectangle) -> u32 {
  22     (rectangle.width + rectangle.height) * 2
  23 }
