src/test/run-pass/issue-15858.rs

   1 // Copyright 2012-2014 The Rust Project Developers. See the COPYRIGHT
   2 // file at the top-level directory of this distribution and at
   3 // http://rust-lang.org/COPYRIGHT.
   4 //
   5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
   6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
   7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
   8 // option. This file may not be copied, modified, or distributed
   9 // except according to those terms.
  10
  11
  12 #![feature(unsafe_destructor)]
  13
  14 static mut DROP_RAN: bool = false;
  15
  16 trait Bar {
  17     fn do_something(&mut self);
  18 }
  19
  20 struct BarImpl;
  21
  22 impl Bar for BarImpl {
  23     fn do_something(&mut self) {}
  24 }
  25
  26
  27 struct Foo<B: Bar>(B);
  28
  29 #[unsafe_destructor]
  30 impl<B: Bar> Drop for Foo<B> {
  31     fn drop(&mut self) {
  32         unsafe {
  33             DROP_RAN = true;
  34         }
  35     }
  36 }
  37
  38
  39 fn main() {
  40     {
  41        let _x: Foo<BarImpl> = Foo(BarImpl);
  42     }
  43     unsafe {
  44         assert_eq!(DROP_RAN, true);
  45     }
  46 }