rust/src/test/compile-fail/issue-12127.rs
Alex Crichton 767ed1a71f rustc: Prevent repeated moves out of proc upvars
This fixes the categorization of the upvars of procs (represented internally
as once fns) to consider usage to require a loan. In doing so, upvars are no
longer allowed to be moved out of repeatedly in loops and such.

Closes #10398
Closes #12041
Closes #12127
2014-04-08 17:10:47 -07:00

19 lines
597 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.
fn main() {
let f = proc() {};
(proc() {
f();
f();
//~^ ERROR: use of moved value: `f`
})()
}