File: pointee.rs

package info (click to toggle)
rustc 1.86.0%2Bdfsg1-1
  • links: PTS, VCS
  • area: main
  • in suites: experimental, forky, sid
  • size: 913,560 kB
  • sloc: xml: 158,127; python: 35,921; javascript: 19,689; sh: 19,600; cpp: 18,906; ansic: 13,124; asm: 4,376; makefile: 708; perl: 29; lisp: 29; ruby: 19; sql: 11
file content (21 lines) | stat: -rw-r--r-- 464 bytes parent folder | download | duplicates (7) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
 
//@ compile-flags: -Znext-solver
//@ check-pass
#![feature(ptr_metadata)]

use std::ptr::{DynMetadata, Pointee};

trait Trait<U> {}
struct MyDst<T: ?Sized>(T);

fn meta_is<T: Pointee<Metadata = U> + ?Sized, U>() {}

fn works<T>() {
    meta_is::<T, ()>();
    meta_is::<[T], usize>();
    meta_is::<str, usize>();
    meta_is::<dyn Trait<T>, DynMetadata<dyn Trait<T>>>();
    meta_is::<MyDst<T>, ()>();
    meta_is::<((((([u8],),),),),), usize>();
}

fn main() {}