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// 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<T, ()>>(x: T) {
x
+
x; //~ ERROR: use of moved value
}
fn move_then_borrow<T: Add<T, ()> + Clone>(x: T) {
x
+
x.clone(); //~ ERROR: use of moved value
}
fn move_borrowed<T: Add<T, ()>>(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<T, ()>>(mut x: T, y: T) {
let m = &mut x;
let n = &y;
*m //~ ERROR: cannot move out of dereference of `&mut`-pointer
+
*n; //~ ERROR: cannot move out of dereference of `&`-pointer
}
struct Foo;
impl<'a, 'b> Add<&'b Foo, ()> for &'a mut Foo {
fn add(self, _: &Foo) {}
}
impl<'a, 'b> Add<&'b mut Foo, ()> for &'a Foo {
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() {}
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