| //@ edition:2021 |
| |
| // Test that we restrict precision of a capture when we access a raw ptr, |
| // i.e. the capture doesn't deref the raw ptr. |
| |
| |
| #![feature(rustc_attrs)] |
| |
| #[derive(Debug)] |
| struct S { |
| s: String, |
| t: String, |
| } |
| |
| struct T(*const S); |
| |
| fn unsafe_imm() { |
| let s = "".into(); |
| let t = "".into(); |
| let my_speed: Box<S> = Box::new(S { s, t }); |
| |
| let p : *const S = Box::into_raw(my_speed); |
| let t = T(p); |
| |
| 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| //~| NOTE: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date |
| || unsafe { |
| //~^ ERROR: First Pass analysis includes: |
| //~| ERROR: Min Capture analysis includes: |
| println!("{:?}", (*t.0).s); |
| //~^ NOTE: Capturing t[(0, 0),Deref,(0, 0)] -> ImmBorrow |
| //~| NOTE: Min Capture t[(0, 0)] -> ImmBorrow |
| }; |
| |
| c(); |
| } |
| |
| fn unsafe_mut() { |
| let s = "".into(); |
| let t = "".into(); |
| let mut my_speed: Box<S> = Box::new(S { s, t }); |
| let p : *mut S = &mut *my_speed; |
| |
| 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| //~| NOTE: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date |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 x = unsafe { &mut (*p).s }; |
| //~^ NOTE: Capturing p[Deref,(0, 0)] -> ImmBorrow |
| //~| NOTE: Min Capture p[] -> ImmBorrow |
| *x = "s".into(); |
| }; |
| c(); |
| } |
| |
| fn main() { |
| unsafe_mut(); |
| unsafe_imm(); |
| } |