| //@ revisions: edition2021 edition2024 | |
| //@[edition2021] edition:2021 | |
| //@[edition2021] check-pass | |
| //@[edition2024] edition:2024 | |
| //@[edition2024] compile-flags: -Zunstable-options | |
| #[no_mangle] //[edition2024]~ ERROR: unsafe attribute used without unsafe | |
| extern "C" fn foo() {} | |
| fn main() {} |