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