| //@ run-pass | |
| // 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); | |
| } |