| // Copyright 2015 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-pretty #27582 |
| |
| // Check that when a `let`-binding occurs in a loop, its associated |
| // drop-flag is reinitialized (to indicate "needs-drop" at the end of |
| // the owning variable's scope). |
| |
| struct A<'a>(&'a mut i32); |
| |
| impl<'a> Drop for A<'a> { |
| fn drop(&mut self) { |
| *self.0 += 1; |
| } |
| } |
| |
| fn main() { |
| let mut cnt = 0; |
| for i in 0..2 { |
| let a = A(&mut cnt); |
| if i == 1 { // Note that |
| break; // both this break |
| } // and also |
| drop(a); // this move of `a` |
| // are necessary to expose the bug |
| } |
| assert_eq!(cnt, 2); |
| } |
