File: impl-with-unconstrained-param.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 (17 lines) | stat: -rw-r--r-- 348 bytes parent folder | download | duplicates (6) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
 
// Ensure that we don't ICE if associated type impl trait is used in an impl
// with an unconstrained type parameter.

#![feature(impl_trait_in_assoc_type)]

trait X {
    type I;
    fn f() -> Self::I;
}

impl<T> X for () {
    //~^ ERROR the type parameter `T` is not constrained
    type I = impl Sized;
    fn f() -> Self::I {}
}

fn main() {}