File: unsized-exprs.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-- 427 bytes parent folder | download | duplicates (10) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
 
#![feature(unsized_fn_params)]

struct A<X: ?Sized>(X);

fn udrop<T: ?Sized>(_x: T) {}
fn foo() -> Box<[u8]> {
    Box::new(*b"foo")
}
fn afoo() -> Box<A<[u8]>> {
    Box::new(A(*b"foo"))
}

impl std::ops::Add<i32> for A<[u8]> {
    type Output = ();
    fn add(self, _rhs: i32) -> Self::Output {}
}

fn main() {
    udrop::<A<[u8]>>(A { 0: *foo() });
    //~^ERROR E0277
    udrop::<A<[u8]>>(A(*foo()));
    //~^ERROR E0277
}