42 lines
1015 B
Rust
42 lines
1015 B
Rust
// Copyright 2013 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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use std::cell::RefCell;
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use std::rc::Rc;
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trait Foo {
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fn set(&mut self, v: Rc<RefCell<A>>);
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}
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struct B {
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v: Option<Rc<RefCell<A>>>
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}
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impl Foo for B {
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fn set(&mut self, v: Rc<RefCell<A>>)
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{
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self.v = Some(v);
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}
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}
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struct A {
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v: Box<Foo + Send>,
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}
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fn main() {
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let a = A {v: box B{v: None} as Box<Foo+Send>};
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//~^ ERROR cannot pack type `~B`, which does not fulfill `Send`
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let v = Rc::new(RefCell::new(a));
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let w = v.clone();
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let b = &*v;
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let mut b = b.borrow_mut();
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b.v.set(w.clone());
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}
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