What really happens
fn main() {
let mut point: Point = Point { x: 0.3, y: 0.4 };
println!("point coordinates: ({}, {})", point.x, point.y);
drop(point);
{
let mut point: Point;
point.x = 0.5;
}
println!(" x is {}", point.x);
}
It turns out that it’s already known as issue #21232.