rust/tests/ui/closures/closure-expected-type/expect-region-supply-region...

25 lines
557 B
Rust

#![allow(warnings)]
fn closure_expecting_bound<F>(_: F)
where
F: FnOnce(&u32),
{
}
fn expect_bound_supply_named<'x>() {
let mut f: Option<&u32> = None;
// Here we give a type annotation that `x` should be free. We get
// an error because of that.
closure_expecting_bound(|x: &'x u32| {
//~^ ERROR lifetime may not live long enough
//~| ERROR lifetime may not live long enough
// Borrowck doesn't get a chance to run, but if it did it should error
// here.
f = Some(x);
});
}
fn main() {}