| //@ revisions: edition2021 edition2024 | |
| //@ [edition2024] compile-flags: -Zunstable-options | |
| //@ [edition2024] edition: 2024 | |
| //@ [edition2024] run-pass | |
| #![cfg_attr(edition2024, feature(shorter_tail_lifetimes))] | |
| fn f() -> usize { | |
| let c = std::cell::RefCell::new(".."); | |
| c.borrow().len() //[edition2021]~ ERROR: `c` does not live long enough | |
| } | |
| fn main() { | |
| let _ = f(); | |
| } |