File: self_implication.rs

package info (click to toggle)
rustc 1.85.0%2Bdfsg3-1
  • links: PTS, VCS
  • area: main
  • in suites: experimental, sid, trixie
  • size: 893,396 kB
  • sloc: xml: 158,127; python: 35,830; javascript: 19,497; cpp: 19,002; sh: 17,245; ansic: 13,127; asm: 4,376; makefile: 1,051; perl: 29; lisp: 29; ruby: 19; sql: 11
file content (39 lines) | stat: -rw-r--r-- 847 bytes parent folder | download | duplicates (3)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
//@ check-pass

#![feature(type_alias_impl_trait)]
fn foo() {
    struct Foo<'a> {
        x: &'a mut u8,
    }
    impl<'a> Foo<'a> {
        fn foo(&self) -> impl Sized {}
    }
    // use site
    let mut x = 5;
    let y = Foo { x: &mut x };
    let z = y.foo();
    let _a = &x; // invalidate the `&'a mut`in `y`
    let _b = z; // this should *not* check that `'a` in the type `Foo<'a>::foo::opaque` is live
}

struct Foo<'a> {
    x: &'a mut u8,
}
// desugared
mod foo {
    pub type FooX = impl Sized;
    impl<'a> super::Foo<'a> {
        pub fn foo(&self) -> FooX {}
    }
}

fn bar() {
    // use site
    let mut x = 5;
    let y = Foo { x: &mut x };
    let z = y.foo();
    let _a = &x; // invalidate the `&'a mut`in `y`
    let _b = z; // this should *not* check that `'a` in the type `Foo<'a>::foo::opaque` is live
}

fn main() {}