65 lines
1.9 KiB
Rust
65 lines
1.9 KiB
Rust
// edition:2021
|
|
|
|
#![feature(rustc_attrs)]
|
|
|
|
// Test that we can't move out of struct that impls `Drop`.
|
|
|
|
|
|
use std::rc::Rc;
|
|
|
|
// Test that we restrict precision when moving not-`Copy` types, if any of the parent paths
|
|
// implement `Drop`. This is to ensure that we don't move out of a type that implements Drop.
|
|
pub fn test1() {
|
|
struct Foo(Rc<i32>);
|
|
|
|
impl Drop for Foo {
|
|
fn drop(self: &mut Foo) {}
|
|
}
|
|
|
|
let f = Foo(Rc::new(1));
|
|
let x = #[rustc_capture_analysis] move || {
|
|
//~^ 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//~| NOTE: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date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!("{:?}", f.0);
|
|
//~^ NOTE: Capturing f[(0, 0)] -> ImmBorrow
|
|
//~| NOTE: Min Capture f[] -> ByValue
|
|
};
|
|
|
|
x();
|
|
}
|
|
|
|
// Test that we don't restrict precision when moving `Copy` types(i.e. when copying),
|
|
// even if any of the parent paths implement `Drop`.
|
|
fn test2() {
|
|
struct Character {
|
|
hp: u32,
|
|
name: String,
|
|
}
|
|
|
|
impl Drop for Character {
|
|
fn drop(&mut self) {}
|
|
}
|
|
|
|
let character = Character { hp: 100, name: format!("A") };
|
|
|
|
let c = #[rustc_capture_analysis] move || {
|
|
//~^ 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//~| NOTE: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date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!("{}", character.hp)
|
|
//~^ NOTE: Capturing character[(0, 0)] -> ImmBorrow
|
|
//~| NOTE: Min Capture character[(0, 0)] -> ByValue
|
|
};
|
|
|
|
c();
|
|
|
|
println!("{}", character.name);
|
|
}
|
|
|
|
fn main() {}
|