File: illegal-upcast-to-impl-opaque.rs

package info (click to toggle)
rustc 1.85.0%2Bdfsg3-1
  • links: PTS, VCS
  • area: main
  • in suites: experimental, forky, sid, trixie, trixie-backports, trixie-proposed-updates
  • size: 893,396 kB
  • sloc: xml: 158,127; python: 35,830; javascript: 19,497; cpp: 19,002; sh: 17,245; ansic: 13,127; asm: 4,376; makefile: 1,051; perl: 29; lisp: 29; ruby: 19; sql: 11
file content (28 lines) | stat: -rw-r--r-- 676 bytes parent folder | download | duplicates (3)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
//@ revisions: current next
//@[next] compile-flags: -Znext-solver
//@[next] failure-status: 101
//@[next] known-bug: unknown
//@[next] normalize-stderr: "note: .*\n\n" -> ""
//@[next] normalize-stderr: "thread 'rustc' panicked.*\n.*\n" -> ""
//@[next] normalize-stderr: "(error: internal compiler error: [^:]+):\d+:\d+: " -> "$1:LL:CC: "
//@[next] normalize-stderr: "delayed at .*" -> ""
//@[next] rustc-env:RUST_BACKTRACE=0
//@ check-pass

#![feature(trait_upcasting)]

trait Super {
    type Assoc;
}

trait Sub: Super {}

impl<T: ?Sized> Super for T {
    type Assoc = i32;
}

fn illegal(x: &dyn Sub<Assoc = i32>) -> &dyn Super<Assoc = impl Sized> {
    x
}

fn main() {}