// 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 or the MIT license // , at your // option. This file may not be copied, modified, or distributed // except according to those terms. #![feature(optin_builtin_traits)] use std::marker::Sync; struct Foo { a: isize } impl !Sync for Foo {} fn bar(_: T) {} fn main() { let x = Foo { a: 5 }; bar(x); //~^ ERROR `Foo: std::marker::Sync` is not satisfied }