File: wf-in-where-clause-static.rs

package info (click to toggle)
rustc-web 1.78.0%2Bdfsg1-2~deb11u3
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 1,245,360 kB
  • sloc: xml: 147,985; javascript: 18,022; sh: 11,083; python: 10,265; ansic: 6,172; cpp: 5,023; asm: 4,390; makefile: 4,269
file content (23 lines) | stat: -rw-r--r-- 478 bytes parent folder | download
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
//@ check-pass
//@ known-bug: #98117

// Should fail. Functions are responsible for checking the well-formedness of
// their own where clauses, so this should fail and require an explicit bound
// `T: 'static`.

use std::fmt::Display;

trait Static: 'static {}
impl<T> Static for &'static T {}

fn foo<S: Display>(x: S) -> Box<dyn Display>
where
    &'static S: Static,
{
    Box::new(x)
}

fn main() {
    let s = foo(&String::from("blah blah blah"));
    println!("{}", s);
}