File: trait-object-trait-parens.rs

package info (click to toggle)
rustc 1.88.0%2Bdfsg1-1
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid
  • size: 934,128 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; lisp: 29; perl: 29; ruby: 19; sql: 11
file content (23 lines) | stat: -rw-r--r-- 1,020 bytes parent folder | download | duplicates (19)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
trait Trait<'a> {}

trait Obj {}

fn f<T: (Copy) + (?Sized) + (for<'a> Trait<'a>)>() {}

fn main() {
    let _: Box<(Obj) + (?Sized) + (for<'a> Trait<'a>)>;
    //~^ ERROR `?Trait` is not permitted in trait object types
    //~| ERROR only auto traits can be used as additional traits
    //~| WARN trait objects without an explicit `dyn` are deprecated
    //~| WARN this is accepted in the current edition
    let _: Box<?Sized + (for<'a> Trait<'a>) + (Obj)>;
    //~^ ERROR `?Trait` is not permitted in trait object types
    //~| ERROR only auto traits can be used as additional traits
    //~| WARN trait objects without an explicit `dyn` are deprecated
    //~| WARN this is accepted in the current edition
    let _: Box<for<'a> Trait<'a> + (Obj) + (?Sized)>;
    //~^ ERROR `?Trait` is not permitted in trait object types
    //~| ERROR only auto traits can be used as additional traits
    //~| WARN trait objects without an explicit `dyn` are deprecated
    //~| WARN this is accepted in the current edition
}