File: nested.rs

package info (click to toggle)
rustc 1.87.0%2Bdfsg1-1
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid
  • size: 925,564 kB
  • sloc: xml: 158,127; python: 36,039; javascript: 19,761; sh: 19,737; cpp: 18,981; ansic: 13,133; asm: 4,376; makefile: 710; perl: 29; lisp: 28; ruby: 19; sql: 11
file content (19 lines) | stat: -rw-r--r-- 327 bytes parent folder | download | duplicates (9) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
 
#![feature(type_alias_impl_trait)]

type Foo = impl std::fmt::Debug;
type Bar = impl Trait<Foo>;

trait Trait<T> {}

impl<T, U> Trait<T> for U {}

#[define_opaque(Bar)]
fn bar() -> Bar {
    //~^ ERROR: item does not constrain
    42
}

fn main() {
    println!("{:?}", bar());
    //~^ ERROR `Bar` doesn't implement `Debug`
}