File: self_implication.rs

package info (click to toggle)
rustc-web 1.70.0%2Bdfsg1-7~deb11u1
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 1,517,036 kB
  • sloc: xml: 147,962; javascript: 10,210; sh: 8,590; python: 8,220; ansic: 5,901; cpp: 4,635; makefile: 4,006; asm: 2,856
file content (38 lines) | stat: -rw-r--r-- 844 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
// 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
}

fn bar() {
    struct Foo<'a> {
        x: &'a mut u8,
    }

    // desugared
    type FooX<'a> = impl Sized;
    impl<'a> Foo<'a> {
        fn foo(&self) -> FooX<'a> {}
    }

    // 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() {}