rust/src/test/ui/span/borrowck-object-mutability.rs
2018-12-25 21:08:33 -07:00

27 lines
450 B
Rust

trait Foo {
fn borrowed(&self);
fn borrowed_mut(&mut self);
}
fn borrowed_receiver(x: &Foo) {
x.borrowed();
x.borrowed_mut(); //~ ERROR cannot borrow
}
fn borrowed_mut_receiver(x: &mut Foo) {
x.borrowed();
x.borrowed_mut();
}
fn owned_receiver(x: Box<Foo>) {
x.borrowed();
x.borrowed_mut(); //~ ERROR cannot borrow
}
fn mut_owned_receiver(mut x: Box<Foo>) {
x.borrowed();
x.borrowed_mut();
}
fn main() {}