rust/src/test/run-pass/slice-panic-2.rs

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// Copyright 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.
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// Test that if a slicing expr[..] fails, the correct cleanups happen.
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// pretty-expanded FIXME #23616
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use std::thread;
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struct Foo;
static mut DTOR_COUNT: int = 0;
impl Drop for Foo {
fn drop(&mut self) { unsafe { DTOR_COUNT += 1; } }
}
fn bar() -> uint {
panic!();
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}
fn foo() {
let x: &[_] = &[Foo, Foo];
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&x[3..bar()];
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}
fn main() {
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let _ = thread::spawn(move|| foo()).join();
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unsafe { assert!(DTOR_COUNT == 2); }
}