rust/tests/ui/methods/method-self-arg-2.rs
2023-01-11 09:32:08 +00:00

26 lines
467 B
Rust

// Test method calls with self as an argument cannot subvert borrow checking.
struct Foo;
impl Foo {
fn bar(&self) {}
fn baz(&mut self) {}
}
fn main() {
let mut x = Foo;
let y = &mut x;
Foo::bar(&x); //~ERROR cannot borrow `x`
y.use_mut();
let mut x = Foo;
let y = &mut x;
Foo::baz(&mut x); //~ERROR cannot borrow `x`
y.use_mut();
}
trait Fake { fn use_mut(&mut self) { } fn use_ref(&self) { } }
impl<T> Fake for T { }