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1 // Copyright 2012 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.
4 //
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.
10
11 trait TraitWithSend: Send {}
12 trait IndirectTraitWithSend: TraitWithSend {}
13
14 // Check struct instantiation (Box<TraitWithSend> will only have Send if TraitWithSend has Send)
15 #[allow(dead_code)]
16 struct Blah { x: Box<TraitWithSend> }
17 impl TraitWithSend for Blah {}
18
19 // Struct instantiation 2-levels deep
20 #[allow(dead_code)]
21 struct IndirectBlah { x: Box<IndirectTraitWithSend> }
22 impl TraitWithSend for IndirectBlah {}
23 impl IndirectTraitWithSend for IndirectBlah {}
24
25 fn test_trait<T: Send + ?Sized>() { println!("got here!") }
26
27 fn main() {
28     test_trait::<TraitWithSend>();
29     test_trait::<IndirectTraitWithSend>();
30 }