| // As documented in Issue #45983, this test is evaluating the quality |
| // of our diagnostics on erroneous code using higher-ranked closures. |
| |
| // revisions: migrate nll |
| |
| // Since we are testing nll (and migration) explicitly as a separate |
| // revisions, don't worry about the --compare-mode=nll on this test. |
| |
| // ignore-compare-mode-nll |
| // ignore-compare-mode-polonius |
| |
| //[nll]compile-flags: -Z borrowck=mir |
| |
| fn give_any<F: for<'r> FnOnce(&'r ())>(f: F) { |
| f(&()); |
| } |
| |
| fn main() { |
| let x = None; |
| give_any(|y| x = Some(y)); |
| //[migrate]~^ ERROR borrowed data cannot be stored outside of its closure |
| //[nll]~^^ ERROR borrowed data escapes outside of closure |
| //[nll]~| ERROR cannot assign to `x`, as it is not declared as mutable |
| } |
