1 // Copyright 2013 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.
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.
12 #![allow(unknown_features)]
13 #![feature(box_syntax)]
16 * This is a regression test for a bug in LLVM, fixed in upstream r179587,
17 * where the switch instructions generated for destructuring enums
18 * represented with nullable pointers could be misoptimized in some cases.
21 enum List<X> { Nil, Cons(X, Box<List<X>>) }
23 match List::Cons(10, box List::Nil) {
24 List::Cons(10, _) => {}