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|
// 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>
|| 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>
|| {
//~^ 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();
}
|
