src/test/run-pass/slice-panic-1.rs

   1 // Copyright 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 // Test that if a slicing expr[..] fails, the correct cleanups happen.
  12
  13
  14 use std::thread;
  15
  16 struct Foo;
  17
  18 static mut DTOR_COUNT: isize = 0;
  19
  20 impl Drop for Foo {
  21     fn drop(&mut self) { unsafe { DTOR_COUNT += 1; } }
  22 }
  23
  24 fn foo() {
  25     let x: &[_] = &[Foo, Foo];
  26     &x[3..4];
  27 }
  28
  29 fn main() {
  30     let _ = thread::spawn(move|| foo()).join();
  31     unsafe { assert!(DTOR_COUNT == 2); }
  32 }