File: builtin-superkinds-self-type.rs

package info (click to toggle)
rustc 1.88.0%2Bdfsg1-2
  • links: PTS, VCS
  • area: main
  • in suites: experimental, forky, sid
  • size: 934,168 kB
  • sloc: xml: 158,127; python: 36,062; javascript: 19,855; sh: 19,700; cpp: 18,947; ansic: 12,993; asm: 4,792; makefile: 690; perl: 29; lisp: 29; ruby: 19; sql: 11
file content (18 lines) | stat: -rw-r--r-- 481 bytes parent folder | download | duplicates (16)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
// Tests (negatively) the ability for the Self type in default methods
// to use capabilities granted by builtin kinds as supertraits.

use std::sync::mpsc::{channel, Sender};

trait Foo : Sized+Sync+'static {
    fn foo(self, mut chan: Sender<Self>) { }
}

impl <T: Sync> Foo for T { }
//~^ ERROR the parameter type `T` may not live long enough

fn main() {
    let (tx, rx) = channel();
    1193182.foo(tx);
    assert_eq!(rx.recv(), 1193182);
    //~^ ERROR: mismatched types
}