rust/tests/ui/nll/borrowed-universal-error-2.rs

fn foo<'a>(x: &'a (u32,)) -> &'a u32 {
    let v = 22;
    &v
    //~^ ERROR cannot return reference to local variable `v` [E0515]
}

fn main() {}
Make explain borrow work for Universal lifetimes 2018-03-01 14:56:43 +00:00			`fn foo<'a>(x: &'a (u32,)) -> &'a u32 {`
			`let v = 22;`
			`&v`
Use new region infer errors for explaining borrows This gives at least some explanation for why a borrow is expected to last for a certain free region. Also: * Reports E0373: "closure may outlive the current function" with NLL. * Special cases the case of returning a reference to (or value referencing) a local variable or temporary (E0515). * Special case assigning a reference to a local variable in a closure to a captured variable. 2018-10-14 14:12:02 +00:00			//~^ ERROR cannot return reference to local variable `v` [E0515]
Make explain borrow work for Universal lifetimes 2018-03-01 14:56:43 +00:00			`}`

			`fn main() {}`