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// edition:2021
// Test that we handle derferences properly when only some of the captures are being moved with
// `capture_disjoint_fields` enabled.
#![feature(rustc_attrs)]
#[derive(Debug, Default)]
struct SomeLargeType;
struct MuchLargerType([SomeLargeType; 32]);
// Ensure that we don't capture any derefs when moving captures into the closures,
// i.e. only data from the enclosing stack is moved.
fn big_box() {
let s = MuchLargerType(Default::default());
let b = Box::new(s);
let t = (b, 10);
let c = #[rustc_capture_analysis]
//~^ ERROR: attributes on expressions are experimental
//~| NOTE: see issue #15701 <https://github.com/rust-lang/rust/issues/15701>
|| {
//~^ First Pass analysis includes:
//~| Min Capture analysis includes:
let p = t.0.0;
//~^ NOTE: Capturing t[(0, 0),Deref,(0, 0)] -> ByValue
//~| NOTE: Min Capture t[(0, 0)] -> ByValue
println!("{} {:?}", t.1, p);
//~^ NOTE: Capturing t[(1, 0)] -> ImmBorrow
//~| NOTE: Min Capture t[(1, 0)] -> ImmBorrow
};
c();
}
fn main() {
big_box();
}
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