rust/tests/ui/borrowck/two-phase-across-loop.rs
2023-01-11 09:32:08 +00:00

23 lines
496 B
Rust

// Test that a borrow which starts as a two-phase borrow and gets
// carried around a loop winds up conflicting with itself.
struct Foo { x: String }
impl Foo {
fn get_string(&mut self) -> &str {
&self.x
}
}
fn main() {
let mut foo = Foo { x: format!("Hello, world") };
let mut strings = vec![];
loop {
strings.push(foo.get_string()); //~ ERROR cannot borrow `foo` as mutable
if strings.len() > 2 { break; }
}
println!("{:?}", strings);
}