f1799fdfca
This fixes borrow checking for closures. Code like this will break:
struct Foo {
x: int,
}
pub fn main() {
let mut this = &mut Foo {
x: 1,
};
let r = || {
let p = &this.x;
&mut this.x;
};
r()
}
Change this code to not take multiple mutable references to the same value. For
example:
struct Foo {
x: int,
}
pub fn main() {
let mut this = &mut Foo {
x: 1,
};
let r = || {
&mut this.x;
};
r()
}
Closes #16361.
[breaking-change]
26 lines
667 B
Rust
26 lines
667 B
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.
|
|
|
|
struct Foo {
|
|
x: int,
|
|
}
|
|
|
|
pub fn main() {
|
|
let mut this = &mut Foo {
|
|
x: 1,
|
|
};
|
|
let r = || {
|
|
let p = &this.x;
|
|
&mut this.x; //~ ERROR cannot borrow
|
|
};
|
|
r()
|
|
}
|
|
|