| // Copyright 2014 The Rust Project Developers. See the COPYRIGHT |
| // file at the top-level directory of this distribution and at |
| // http://rust-lang.org/COPYRIGHT. |
| // |
| // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or |
| // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license |
| // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your |
| // option. This file may not be copied, modified, or distributed |
| // except according to those terms. |
| |
| // Test that move restrictions are enforced on overloaded binary operations |
| |
| use std::ops::Add; |
| |
| fn double_move<T: Add<Output=()>>(x: T) { |
| x |
| + |
| x; //~ ERROR: use of moved value |
| } |
| |
| fn move_then_borrow<T: Add<Output=()> + Clone>(x: T) { |
| x |
| + |
| x.clone(); //~ ERROR: use of moved value |
| } |
| |
| fn move_borrowed<T: Add<Output=()>>(x: T, mut y: T) { |
| let m = &x; |
| let n = &mut y; |
| |
| x //~ ERROR: cannot move out of `x` because it is borrowed |
| + |
| y; //~ ERROR: cannot move out of `y` because it is borrowed |
| } |
| |
| fn illegal_dereference<T: Add<Output=()>>(mut x: T, y: T) { |
| let m = &mut x; |
| let n = &y; |
| |
| *m //~ ERROR: cannot move out of borrowed content |
| + |
| *n; //~ ERROR: cannot move out of borrowed content |
| } |
| |
| struct Foo; |
| |
| impl<'a, 'b> Add<&'b Foo> for &'a mut Foo { |
| type Output = (); |
| |
| fn add(self, _: &Foo) {} |
| } |
| |
| impl<'a, 'b> Add<&'b mut Foo> for &'a Foo { |
| type Output = (); |
| |
| fn add(self, _: &mut Foo) {} |
| } |
| |
| fn mut_plus_immut() { |
| let mut f = Foo; |
| |
| &mut f |
| + |
| &f; //~ ERROR: cannot borrow `f` as immutable because it is also borrowed as mutable |
| } |
| |
| fn immut_plus_mut() { |
| let mut f = Foo; |
| |
| &f |
| + |
| &mut f; //~ ERROR: cannot borrow `f` as mutable because it is also borrowed as immutable |
| } |
| |
| fn main() {} |