| // 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. |
| |
| // ignore-tidy-linelength |
| // revisions: ast mir |
| //[mir]compile-flags: -Z borrowck=mir |
| |
| #![feature(unboxed_closures)] |
| |
| use std::io::Read; |
| |
| fn to_fn_once<A,F:FnOnce<A>>(f: F) -> F { f } |
| |
| fn main() { |
| let x = 1; |
| to_fn_once(move|| { x = 2; }); |
| //[ast]~^ ERROR: cannot assign to immutable captured outer variable |
| //[mir]~^^ ERROR: cannot assign to `x`, as it is not declared as mutable |
| |
| let s = std::io::stdin(); |
| to_fn_once(move|| { s.read_to_end(&mut Vec::new()); }); |
| //[ast]~^ ERROR: cannot borrow immutable captured outer variable |
| //[mir]~^^ ERROR: cannot borrow `s` as mutable, as it is not declared as mutable |
| } |
