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// edition:2021
#![feature(rustc_attrs)]
struct Point {
x: i32,
y: i32,
}
// This testcase ensures that nested closures are handles properly
// - The nested closure is analyzed first.
// - The capture kind of the nested closure is accounted for by the enclosing closure
// - Any captured path by the nested closure that starts off a local variable in the enclosing
// closure is not listed as a capture of the enclosing closure.
fn main() {
let mut p = Point { x: 5, y: 20 };
let mut c1 = #[rustc_capture_analysis]
//~^ ERROR: attributes on expressions are experimental
//~| NOTE: see issue #15701 <https://github.com/rust-lang/rust/issues/15701>
|| {
//~^ ERROR: First Pass analysis includes:
//~| ERROR: Min Capture analysis includes:
println!("{}", p.x);
//~^ NOTE: Capturing p[(0, 0)] -> ImmBorrow
//~| NOTE: Min Capture p[(0, 0)] -> ImmBorrow
let incr = 10;
let mut c2 = #[rustc_capture_analysis]
//~^ ERROR: attributes on expressions are experimental
//~| NOTE: see issue #15701 <https://github.com/rust-lang/rust/issues/15701>
|| p.y += incr;
//~^ ERROR: First Pass analysis includes:
//~| ERROR: Min Capture analysis includes:
//~| NOTE: Capturing p[(1, 0)] -> MutBorrow
//~| NOTE: Capturing incr[] -> ImmBorrow
//~| NOTE: Min Capture p[(1, 0)] -> MutBorrow
//~| NOTE: Min Capture incr[] -> ImmBorrow
//~| NOTE: Capturing p[(1, 0)] -> MutBorrow
//~| NOTE: Min Capture p[(1, 0)] -> MutBorrow
c2();
println!("{}", p.y);
//~^ NOTE: Capturing p[(1, 0)] -> ImmBorrow
};
c1();
let px = &p.x;
println!("{}", px);
c1();
}
|
