File: issue-53678-generator-and-const-fn.rs

package info (click to toggle)
rustc-web 1.70.0%2Bdfsg1-7~deb11u1
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 1,517,036 kB
  • sloc: xml: 147,962; javascript: 10,210; sh: 8,590; python: 8,220; ansic: 5,901; cpp: 4,635; makefile: 4,006; asm: 2,856
file content (19 lines) | stat: -rw-r--r-- 428 bytes parent folder | download | duplicates (5) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
 
#![feature(generators, generator_trait, rustc_attrs)]
#![feature(type_alias_impl_trait)]

use std::ops::Generator;

type GenOnce<Y, R> = impl Generator<Yield = Y, Return = R>;

const fn const_generator<Y, R>(yielding: Y, returning: R) -> GenOnce<Y, R> {
    move || {
        yield yielding;

        return returning;
    }
}

const FOO: GenOnce<usize, usize> = const_generator(10, 100);

#[rustc_error]
fn main() {} //~ ERROR