| //@ revisions: e2015 mid e2024 | |
| //@[e2015] edition: 2015 | |
| //@[mid] edition: 2018..2024 | |
| //@[e2024] edition: 2024 | |
| async gen fn foo() {} | |
| //[e2015]~^ ERROR: `async fn` is not permitted in Rust 2015 | |
| //[e2015]~| ERROR: expected one of `extern`, `fn`, `safe`, or `unsafe`, found `gen` | |
| //[mid]~^^^ ERROR: expected one of `extern`, `fn`, `safe`, or `unsafe`, found `gen` | |
| //[e2024]~^^^^ ERROR: gen blocks are experimental | |
| fn main() {} |