| error: expected one of `#`, `async`, `const`, `default`, `extern`, `final`, `fn`, `pub`, `safe`, `unsafe`, or `use`, found `gen` | |
| --> $DIR/gen_fn.rs:4:1 | |
| | | |
| LL | gen fn foo() {} | |
| | ^^^ expected one of 11 possible tokens | |
| error: aborting due to 1 previous error | |