rust/src/test/run-pass/option-unwrap.rs
Alex Crichton ec7c800d2f Remove pretty-expanded from failing tests
This commit removes pretty-expanded from all tests that wind up calling panic!
one way or another now that its internals are unstable.
2015-04-08 17:21:34 -07:00

44 lines
940 B
Rust

// Copyright 2012 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.
#![feature(unsafe_destructor)]
use std::cell::Cell;
struct dtor<'a> {
x: &'a Cell<isize>,
}
#[unsafe_destructor]
impl<'a> Drop for dtor<'a> {
fn drop(&mut self) {
self.x.set(self.x.get() - 1);
}
}
fn unwrap<T>(o: Option<T>) -> T {
match o {
Some(v) => v,
None => panic!()
}
}
pub fn main() {
let x = &Cell::new(1);
{
let b = Some(dtor { x:x });
let _c = unwrap(b);
}
assert_eq!(x.get(), 0);
}