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//~| NOTE: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date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