1 // Copyright 2015 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.
14 pub fn fail(x: Option<&(Iterator<Item=()>+Send)>)
15 -> Option<&Iterator<Item=()>> {
16 // This call used to trigger an LLVM assertion because the return
17 // slot had type "Option<&Iterator>"* instead of
18 // "Option<&(Iterator+Send)>"* -- but this now yields a
19 // compilation error and I'm not sure how to create a comparable
20 // test. To ensure that this PARTICULAR failure doesn't occur
21 // again, though, I've left this test here, so if this ever starts
22 // to compile again, we can adjust the test appropriately (clearly
23 // it should never ICE...). -nmatsakis
24 inner(x) //~ ERROR mismatched types
27 pub fn inner(x: Option<&(Iterator<Item=()>+Send)>)
28 -> Option<&(Iterator<Item=()>+Send)> {