70 lines
1.7 KiB
Rust
70 lines
1.7 KiB
Rust
|
// 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
|
||
|
|
|
||
|
|
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() {}
|