rust/tests/ui/span/issue-23338-locals-die-before-temps-of-body.rs
2023-01-11 09:32:08 +00:00

29 lines
679 B
Rust

// This is just checking that we still reject code where temp values
// are borrowing values for longer than they will be around.
//
// Compare to run-pass/issue-23338-params-outlive-temps-of-body.rs
use std::cell::RefCell;
fn foo(x: RefCell<String>) -> String {
let y = x;
y.borrow().clone()
}
//~^^ ERROR `y` does not live long enough
fn foo2(x: RefCell<String>) -> String {
let ret = {
let y = x;
y.borrow().clone()
};
//~^^ ERROR `y` does not live long enough
ret
}
fn main() {
let r = RefCell::new(format!("data"));
assert_eq!(foo(r), "data");
let r = RefCell::new(format!("data"));
assert_eq!(foo2(r), "data");
}