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2 changes: 1 addition & 1 deletion doc/rust.md
Original file line number Diff line number Diff line change
Expand Up @@ -2393,7 +2393,7 @@ variables in the arm's block, and control enters the block.
An example of an `match` expression:


~~~~ {.xfail-test}
~~~~
# fn process_pair(a: int, b: int) { }
# fn process_ten() { }

Expand Down
2 changes: 1 addition & 1 deletion src/llvm
24 changes: 24 additions & 0 deletions src/test/run-pass/enum-nullable-simplifycfg-misopt.rs
Original file line number Diff line number Diff line change
@@ -0,0 +1,24 @@
// Copyright 2013 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.

/*!
* This is a regression test for a bug in LLVM, fixed in upstream r179587,
* where the switch instructions generated for destructuring enums
* represented with nullable pointers could be misoptimized in some cases.
*/

enum List<X> { Nil, Cons(X, @List<X>) }
pub fn main() {
match Cons(10, @Nil) {
Cons(10, _) => {}
Nil => {}
_ => fail!()
}
}