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.
11 struct X<F> where F: FnOnce() + 'static + Send {
15 fn foo<F>(blk: F) -> X<F> where F: FnOnce() + 'static {
16 //~^ ERROR `F` cannot be sent between threads safely
17 return X { field: blk };