| // 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. |
| |
| #![allow(stable_features)] |
| #![allow(unused_imports)] |
| // Test that cleanup scope for temporaries created in a match |
| // arm is confined to the match arm itself. |
| |
| // pretty-expanded FIXME #23616 |
| |
| #![feature(box_syntax, os)] |
| |
| use std::os; |
| |
| struct Test { x: isize } |
| |
| impl Test { |
| fn get_x(&self) -> Option<Box<isize>> { |
| Some(box self.x) |
| } |
| } |
| |
| fn do_something(t: &Test) -> isize { |
| |
| // The cleanup scope for the result of `t.get_x()` should be the |
| // arm itself and not the match, otherwise we'll (potentially) get |
| // a crash trying to free an uninitialized stack slot. |
| |
| match t { |
| &Test { x: 2 } if t.get_x().is_some() => { |
| t.x * 2 |
| } |
| _ => { 22 } |
| } |
| } |
| |
| pub fn main() { |
| let t = Test { x: 1 }; |
| do_something(&t); |
| } |