blob: 88a3b24d14fc899efa335d28b92b3cf1f8cc5676 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
|
// Copyright 2012-2014 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.
// Ensures that destructors are run for expressions of the form "e;" where
// `e` is a type which requires a destructor.
#![allow(path_statement)]
struct A { n: isize }
struct B;
static mut NUM_DROPS: usize = 0;
impl Drop for A {
fn drop(&mut self) {
unsafe { NUM_DROPS += 1; }
}
}
impl Drop for B {
fn drop(&mut self) {
unsafe { NUM_DROPS += 1; }
}
}
fn main() {
assert_eq!(unsafe { NUM_DROPS }, 0);
{ let _a = A { n: 1 }; }
assert_eq!(unsafe { NUM_DROPS }, 1);
{ A { n: 3 }; }
assert_eq!(unsafe { NUM_DROPS }, 2);
{ let _b = B; }
assert_eq!(unsafe { NUM_DROPS }, 3);
{ B; }
assert_eq!(unsafe { NUM_DROPS }, 4);
}
|
