| // edition:2021 |
| |
| #![feature(rustc_attrs)] |
| |
| // Test to ensure Index projections are handled properly during capture analysis |
| // The array should be moved in entirety, even though only some elements are used. |
| fn arrays() { |
| let arr: [String; 5] = [format!("A"), format!("B"), format!("C"), format!("D"), format!("E")]; |
| |
| let c = #[rustc_capture_analysis] |
| //~^ ERROR: attributes on expressions are experimental |
| //~| NOTE: see issue #15701 <https://github.com/rust-lang/rust/issues/15701> |
| //~| NOTE: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date |
| || { |
| //~^ ERROR: First Pass analysis includes: |
| //~| ERROR: Min Capture analysis includes: |
| let [a, b, .., e] = arr; |
| //~^ NOTE: Capturing arr[Index] -> ByValue |
| //~| NOTE: Capturing arr[Index] -> ByValue |
| //~| NOTE: Capturing arr[Index] -> ByValue |
| //~| NOTE: Min Capture arr[] -> ByValue |
| assert_eq!(a, "A"); |
| assert_eq!(b, "B"); |
| assert_eq!(e, "E"); |
| }; |
| |
| c(); |
| } |
| |
| struct Point { |
| x: i32, |
| y: i32, |
| id: String, |
| } |
| |
| fn structs() { |
| let mut p = Point { x: 10, y: 10, id: String::new() }; |
| |
| let c = #[rustc_capture_analysis] |
| //~^ ERROR: attributes on expressions are experimental |
| //~| NOTE: see issue #15701 <https://github.com/rust-lang/rust/issues/15701> |
| //~| NOTE: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date |
| || { |
| //~^ ERROR: First Pass analysis includes: |
| //~| ERROR: Min Capture analysis includes: |
| let Point { x: ref mut x, y: _, id: moved_id } = p; |
| //~^ NOTE: Capturing p[(0, 0)] -> MutBorrow |
| //~| NOTE: Capturing p[(2, 0)] -> ByValue |
| //~| NOTE: Min Capture p[(0, 0)] -> MutBorrow |
| //~| NOTE: Min Capture p[(2, 0)] -> ByValue |
| |
| println!("{}, {}", x, moved_id); |
| }; |
| c(); |
| } |
| |
| fn tuples() { |
| let mut t = (10, String::new(), (String::new(), 42)); |
| |
| let c = #[rustc_capture_analysis] |
| //~^ ERROR: attributes on expressions are experimental |
| //~| NOTE: see issue #15701 <https://github.com/rust-lang/rust/issues/15701> |
| //~| NOTE: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date |
| || { |
| //~^ ERROR: First Pass analysis includes: |
| //~| ERROR: Min Capture analysis includes: |
| let (ref mut x, ref ref_str, (moved_s, _)) = t; |
| //~^ NOTE: Capturing t[(0, 0)] -> MutBorrow |
| //~| NOTE: Capturing t[(1, 0)] -> ImmBorrow |
| //~| NOTE: Capturing t[(2, 0),(0, 0)] -> ByValue |
| //~| NOTE: Min Capture t[(0, 0)] -> MutBorrow |
| //~| NOTE: Min Capture t[(1, 0)] -> ImmBorrow |
| //~| NOTE: Min Capture t[(2, 0),(0, 0)] -> ByValue |
| |
| println!("{}, {} {}", x, ref_str, moved_s); |
| }; |
| c(); |
| } |
| |
| fn main() {} |