File: overcaptures-2024.rs

package info (click to toggle)
rustc 1.86.0%2Bdfsg1-1
  • links: PTS, VCS
  • area: main
  • in suites: experimental, forky, sid
  • size: 913,560 kB
  • sloc: xml: 158,127; python: 35,921; javascript: 19,689; sh: 19,600; cpp: 18,906; ansic: 13,124; asm: 4,376; makefile: 708; perl: 29; lisp: 29; ruby: 19; sql: 11
file content (49 lines) | stat: -rw-r--r-- 1,703 bytes parent folder | download | duplicates (6)
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
40
41
42
43
44
45
46
47
48
49
//@ run-rustfix
//@ edition: 2018

#![allow(unused)]
#![deny(impl_trait_overcaptures)]

fn named<'a>(x: &'a i32) -> impl Sized { *x }
//~^ ERROR `impl Sized` will capture more lifetimes than possibly intended in edition 2024
//~| WARN this changes meaning in Rust 2024

fn implicit(x: &i32) -> impl Sized { *x }
//~^ ERROR `impl Sized` will capture more lifetimes than possibly intended in edition 2024
//~| WARN this changes meaning in Rust 2024

struct W;
impl W {
    fn hello(&self, x: &i32) -> impl Sized + '_ { self }
    //~^ ERROR `impl Sized + '_` will capture more lifetimes than possibly intended in edition 2024
    //~| WARN this changes meaning in Rust 2024
}

trait Higher<'a> {
    type Output;
}
impl Higher<'_> for () {
    type Output = ();
}

fn hrtb() -> impl for<'a> Higher<'a, Output = impl Sized> {}
//~^ ERROR `impl Sized` will capture more lifetimes than possibly intended in edition 2024
//~| WARN this changes meaning in Rust 2024

fn apit(_: &impl Sized) -> impl Sized {}
//~^ ERROR `impl Sized` will capture more lifetimes than possibly intended in edition 2024
//~| WARN this changes meaning in Rust 2024

fn apit2<U>(_: &impl Sized, _: U) -> impl Sized {}
//~^ ERROR `impl Sized` will capture more lifetimes than possibly intended in edition 2024
//~| WARN this changes meaning in Rust 2024

async fn async_fn<'a>(x: &'a ()) -> impl Sized {}
//~^ ERROR `impl Sized` will capture more lifetimes than possibly intended in edition 2024
//~| WARN this changes meaning in Rust 2024

pub fn parens(x: &i32) -> &impl Clone { x }
//~^ ERROR `impl Clone` will capture more lifetimes than possibly intended in edition 2024
//~| WARN this changes meaning in Rust 2024

fn main() {}