| //@ 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> |
| //~| NOTE: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date |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: |
| 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> |
| //~| NOTE: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date |
| || 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(); |
| } |