| // Copyright 2012 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. |
| |
| // revisions: ast mir |
| //[mir]compile-flags: -Zborrowck=mir |
| |
| fn test_drop_replace() { |
| let b: Box<isize>; |
| //[mir]~^ HELP make this binding mutable |
| //[mir]~| SUGGESTION mut b |
| b = Box::new(1); //[ast]~ NOTE first assignment |
| //[mir]~^ NOTE first assignment |
| b = Box::new(2); //[ast]~ ERROR cannot assign twice to immutable variable |
| //[mir]~^ ERROR cannot assign twice to immutable variable `b` |
| //[ast]~| NOTE cannot assign twice to immutable |
| //[mir]~| NOTE cannot assign twice to immutable |
| } |
| |
| fn test_call() { |
| let b = Box::new(1); //[ast]~ NOTE first assignment |
| //[mir]~^ NOTE first assignment |
| //[mir]~| HELP make this binding mutable |
| //[mir]~| SUGGESTION mut b |
| b = Box::new(2); //[ast]~ ERROR cannot assign twice to immutable variable |
| //[mir]~^ ERROR cannot assign twice to immutable variable `b` |
| //[ast]~| NOTE cannot assign twice to immutable |
| //[mir]~| NOTE cannot assign twice to immutable |
| } |
| |
| fn test_args(b: Box<i32>) { //[ast]~ NOTE first assignment |
| //[mir]~^ HELP make this binding mutable |
| //[mir]~| SUGGESTION mut b |
| b = Box::new(2); //[ast]~ ERROR cannot assign twice to immutable variable |
| //[mir]~^ ERROR cannot assign to immutable argument `b` |
| //[ast]~| NOTE cannot assign twice to immutable |
| //[mir]~| NOTE cannot assign to immutable argument |
| } |
| |
| fn main() {} |