| // As documented in Issue #45983, this test is evaluating the quality | |
| // of our diagnostics on erroneous code using higher-ranked closures. | |
| fn give_any<F: for<'r> FnOnce(&'r ())>(f: F) { | |
| f(&()); | |
| } | |
| fn main() { | |
| let mut x = None; | |
| give_any(|y| x = Some(y)); | |
| //~^ ERROR borrowed data escapes outside of closure | |
| } |