// edition:2021 // Test that when a borrow checker diagnostics are emitted, it's as precise // as the capture by the closure. #![allow(unused)] struct Point { x: i32, y: i32, } struct Wrapper { p: Point, } fn main() { let mut w = Wrapper { p: Point { x: 10, y: 10 } }; let mut c = || { w.p.x += 20; }; let py = &mut w.p.x; //~^ ERROR: cannot borrow `w.p.x` as mutable more than once at a time c(); *py = 20 }