File: supertrait-mentions-Self.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 (22 lines) | stat: -rw-r--r-- 422 bytes parent folder | download | duplicates (16) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
 
// Check that we correctly prevent users from making trait objects
// form traits that make use of `Self` in an argument or return position.

trait Bar<T> {
    fn bar(&self, x: &T);
}

trait Baz : Bar<Self> {
    //~^ ERROR the size for values of type `Self` cannot be known
}

fn make_bar<T:Bar<u32>>(t: &T) -> &dyn Bar<u32> {
    t
}

fn make_baz<T:Baz>(t: &T) -> &dyn Baz {
    //~^ ERROR E0038
    t
}

fn main() {
}