rust/tests/ui/borrowck/borrowck-uninit-field-access.rs

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// Check that do not allow access to fields of uninitialized or moved
// structs.
#[derive(Default)]
struct Point {
x: isize,
y: isize,
}
#[derive(Default)]
struct Line {
origin: Point,
middle: Point,
target: Point,
}
impl Line { fn consume(self) { } }
fn main() {
let mut a: Point;
let _ = a.x + 1; //~ ERROR [E0381]
let mut line1 = Line::default();
let _moved = line1.origin;
let _ = line1.origin.x + 1; //~ ERROR [E0382]
let mut line2 = Line::default();
let _moved = (line2.origin, line2.middle);
line2.consume(); //~ ERROR [E0382]
}